diff --git a/ports/mimxrt/Makefile b/ports/mimxrt/Makefile
index 985ece0845..cfcdb9f7d5 100644
--- a/ports/mimxrt/Makefile
+++ b/ports/mimxrt/Makefile
@@ -88,9 +88,12 @@ CFLAGS += -DXIP_EXTERNAL_FLASH=1 \
 	-D__STARTUP_INITIALIZE_RAMFUNCTION \
 	-D__START=main \
 	-DCPU_HEADER_H='<$(MCU_SERIES).h>' \
+	-DCLOCK_CONFIG_H='<boards/$(MCU_SERIES)_clock_config.h>' \
 	-DBOARD_FLASH_SIZE=$(MICROPY_HW_FLASH_SIZE) \
 	-DMICROPY_HW_FLASH_SIZE=$(MICROPY_HW_FLASH_SIZE) \
 
+CFLAGS += -DI2C_RETRY_TIMES=1000000 -DSPI_RETRY_TIMES=1000000 -DUART_RETRY_TIMES=1000000
+
 ifeq ($(MICROPY_PY_MACHINE_SDCARD),1)
 CFLAGS += -DMICROPY_PY_MACHINE_SDCARD=1
 endif
@@ -194,7 +197,6 @@ SRC_HAL_IMX_C += \
 	$(MCU_DIR)/drivers/fsl_snvs_lp.c \
 	$(MCU_DIR)/drivers/fsl_trng.c \
 	$(MCU_DIR)/drivers/fsl_wdog.c \
-	$(MCU_DIR)/project_template/clock_config.c \
 	$(MCU_DIR)/system_$(MCU_SERIES).c \
 	$(MCU_DIR)/xip/fsl_flexspi_nor_boot.c \
 
@@ -213,6 +215,7 @@ endif
 
 SRC_C += \
 	board_init.c \
+	boards/$(MCU_SERIES)_clock_config.c \
 	dma_manager.c \
 	drivers/bus/softspi.c \
 	drivers/dht/dht.c \
diff --git a/ports/mimxrt/board_init.c b/ports/mimxrt/board_init.c
index 398fafc6c3..c3dbb652bc 100644
--- a/ports/mimxrt/board_init.c
+++ b/ports/mimxrt/board_init.c
@@ -37,7 +37,7 @@
 #include "fsl_clock.h"
 #include "fsl_lpuart.h"
 
-#include "clock_config.h"
+#include CLOCK_CONFIG_H
 #include "modmachine.h"
 
 
diff --git a/ports/mimxrt/boards/MIMXRT1011_clock_config.c b/ports/mimxrt/boards/MIMXRT1011_clock_config.c
new file mode 100644
index 0000000000..cc889d314a
--- /dev/null
+++ b/ports/mimxrt/boards/MIMXRT1011_clock_config.c
@@ -0,0 +1,342 @@
+/*
+ * Copyright 2019 NXP
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * How to setup clock using clock driver functions:
+ *
+ * 1. Call CLOCK_InitXXXPLL() to configure corresponding PLL clock.
+ *
+ * 2. Call CLOCK_InitXXXpfd() to configure corresponding PLL pfd clock.
+ *
+ * 3. Call CLOCK_SetMux() to configure corresponding clock source for target clock out.
+ *
+ * 4. Call CLOCK_SetDiv() to configure corresponding clock divider for target clock out.
+ *
+ * 5. Call CLOCK_SetXtalFreq() to set XTAL frequency based on board settings.
+ *
+ */
+
+/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
+!!GlobalInfo
+product: Clocks v6.0
+processor: MIMXRT1011xxxxx
+package_id: MIMXRT1011DAE5A
+mcu_data: ksdk2_0
+processor_version: 0.0.1
+board: MIMXRT1010-EVK
+ * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
+
+#include CLOCK_CONFIG_H
+#include "fsl_iomuxc.h"
+
+/*******************************************************************************
+ * Definitions
+ ******************************************************************************/
+
+/*******************************************************************************
+ * Variables
+ ******************************************************************************/
+/* System clock frequency. */
+extern uint32_t SystemCoreClock;
+
+/*******************************************************************************
+ ************************ BOARD_InitBootClocks function ************************
+ ******************************************************************************/
+void BOARD_InitBootClocks(void) {
+    BOARD_BootClockRUN();
+}
+
+/*******************************************************************************
+ ********************** Configuration BOARD_BootClockRUN ***********************
+ ******************************************************************************/
+/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
+!!Configuration
+name: BOARD_BootClockRUN
+called_from_default_init: true
+outputs:
+- {id: ADC_ALT_CLK.outFreq, value: 40 MHz}
+- {id: CKIL_SYNC_CLK_ROOT.outFreq, value: 32.768 kHz}
+- {id: CLK_1M.outFreq, value: 1 MHz}
+- {id: CLK_24M.outFreq, value: 24 MHz}
+- {id: CORE_CLK_ROOT.outFreq, value: 500 MHz}
+- {id: ENET_500M_REF_CLK.outFreq, value: 500 MHz}
+- {id: FLEXIO1_CLK_ROOT.outFreq, value: 30 MHz}
+- {id: FLEXSPI_CLK_ROOT.outFreq, value: 132 MHz}
+- {id: GPT1_ipg_clk_highfreq.outFreq, value: 62.5 MHz}
+- {id: GPT2_ipg_clk_highfreq.outFreq, value: 62.5 MHz}
+- {id: IPG_CLK_ROOT.outFreq, value: 125 MHz}
+- {id: LPI2C_CLK_ROOT.outFreq, value: 60 MHz}
+- {id: LPSPI_CLK_ROOT.outFreq, value: 105.6 MHz}
+- {id: MQS_MCLK.outFreq, value: 1080/17 MHz}
+- {id: PERCLK_CLK_ROOT.outFreq, value: 62.5 MHz}
+- {id: SAI1_CLK_ROOT.outFreq, value: 1080/17 MHz}
+- {id: SAI1_MCLK1.outFreq, value: 1080/17 MHz}
+- {id: SAI1_MCLK2.outFreq, value: 1080/17 MHz}
+- {id: SAI1_MCLK3.outFreq, value: 30 MHz}
+- {id: SAI3_CLK_ROOT.outFreq, value: 1080/17 MHz}
+- {id: SAI3_MCLK1.outFreq, value: 1080/17 MHz}
+- {id: SAI3_MCLK3.outFreq, value: 30 MHz}
+- {id: SPDIF0_CLK_ROOT.outFreq, value: 30 MHz}
+- {id: TRACE_CLK_ROOT.outFreq, value: 352/3 MHz}
+- {id: UART_CLK_ROOT.outFreq, value: 80 MHz}
+settings:
+- {id: CCM.ADC_ACLK_PODF.scale, value: '12', locked: true}
+- {id: CCM.AHB_PODF.scale, value: '1', locked: true}
+- {id: CCM.FLEXSPI_PODF.scale, value: '4', locked: true}
+- {id: CCM.IPG_PODF.scale, value: '4'}
+- {id: CCM.LPSPI_PODF.scale, value: '5', locked: true}
+- {id: CCM.PERCLK_PODF.scale, value: '2', locked: true}
+- {id: CCM.PRE_PERIPH_CLK_SEL.sel, value: CCM_ANALOG.ENET_500M_REF_CLK}
+- {id: CCM.SAI1_CLK_SEL.sel, value: CCM_ANALOG.PLL3_PFD2_CLK}
+- {id: CCM.SAI3_CLK_SEL.sel, value: CCM_ANALOG.PLL3_PFD2_CLK}
+- {id: CCM.TRACE_PODF.scale, value: '3', locked: true}
+- {id: CCM_ANALOG.PLL2.denom, value: '1'}
+- {id: CCM_ANALOG.PLL2.div, value: '22'}
+- {id: CCM_ANALOG.PLL2.num, value: '0'}
+- {id: CCM_ANALOG.PLL2_BYPASS.sel, value: CCM_ANALOG.PLL2_OUT_CLK}
+- {id: CCM_ANALOG.PLL2_PFD0_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD0}
+- {id: CCM_ANALOG.PLL2_PFD1_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD1}
+- {id: CCM_ANALOG.PLL2_PFD2_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD2}
+- {id: CCM_ANALOG.PLL2_PFD2_DIV.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL2_PFD2_MUL.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL2_PFD3_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD3}
+- {id: CCM_ANALOG.PLL2_PFD3_DIV.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL2_PFD3_MUL.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL3_BYPASS.sel, value: CCM_ANALOG.PLL3}
+- {id: CCM_ANALOG.PLL3_PFD0_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD0}
+- {id: CCM_ANALOG.PLL3_PFD0_DIV.scale, value: '22', locked: true}
+- {id: CCM_ANALOG.PLL3_PFD0_MUL.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL3_PFD1_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD1}
+- {id: CCM_ANALOG.PLL3_PFD2_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD2}
+- {id: CCM_ANALOG.PLL3_PFD3_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD3}
+- {id: CCM_ANALOG.PLL3_PFD3_DIV.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL3_PFD3_MUL.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL6_BYPASS.sel, value: CCM_ANALOG.PLL6}
+- {id: CCM_ANALOG_PLL_USB1_POWER_CFG, value: 'Yes'}
+sources:
+- {id: XTALOSC24M.OSC.outFreq, value: 24 MHz, enabled: true}
+- {id: XTALOSC24M.RTC_OSC.outFreq, value: 32.768 kHz, enabled: true}
+ * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
+
+/*******************************************************************************
+ * Variables for BOARD_BootClockRUN configuration
+ ******************************************************************************/
+const clock_sys_pll_config_t sysPllConfig_BOARD_BootClockRUN = {
+    .loopDivider = 1, /* PLL loop divider, Fout = Fin * ( 20 + loopDivider*2 + numerator / denominator ) */
+    .numerator = 0,   /* 30 bit numerator of fractional loop divider */
+    .denominator = 1, /* 30 bit denominator of fractional loop divider */
+    .src = 0,         /* Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N */
+};
+const clock_usb_pll_config_t usb1PllConfig_BOARD_BootClockRUN = {
+    .loopDivider = 0, /* PLL loop divider, Fout = Fin * 20 */
+    .src = 0,         /* Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N */
+};
+const clock_enet_pll_config_t enetPllConfig_BOARD_BootClockRUN = {
+    .enableClkOutput500M = true, /* Enable the PLL providing the ENET 500MHz reference clock */
+    .src = 0,                    /* Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N */
+};
+/*******************************************************************************
+ * Code for BOARD_BootClockRUN configuration
+ ******************************************************************************/
+void BOARD_BootClockRUN(void) {
+    /* Init RTC OSC clock frequency. */
+    CLOCK_SetRtcXtalFreq(32768U);
+    /* Enable 1MHz clock output. */
+    XTALOSC24M->OSC_CONFIG2 |= XTALOSC24M_OSC_CONFIG2_ENABLE_1M_MASK;
+    /* Use free 1MHz clock output. */
+    XTALOSC24M->OSC_CONFIG2 &= ~XTALOSC24M_OSC_CONFIG2_MUX_1M_MASK;
+    /* Set XTAL 24MHz clock frequency. */
+    CLOCK_SetXtalFreq(24000000U);
+    /* Enable XTAL 24MHz clock source. */
+    CLOCK_InitExternalClk(0);
+    /* Enable internal RC. */
+    CLOCK_InitRcOsc24M();
+    /* Switch clock source to external OSC. */
+    CLOCK_SwitchOsc(kCLOCK_XtalOsc);
+    /* Set Oscillator ready counter value. */
+    CCM->CCR = (CCM->CCR & (~CCM_CCR_OSCNT_MASK)) | CCM_CCR_OSCNT(127);
+    /* Setting PeriphClk2Mux and PeriphMux to provide stable clock before PLLs are initialed */
+    CLOCK_SetMux(kCLOCK_PeriphClk2Mux, 1); /* Set PERIPH_CLK2 MUX to OSC */
+    CLOCK_SetMux(kCLOCK_PeriphMux, 1);     /* Set PERIPH_CLK MUX to PERIPH_CLK2 */
+    /* Setting the VDD_SOC to 1.5V. It is necessary to config CORE to 500Mhz. */
+    DCDC->REG3 = (DCDC->REG3 & (~DCDC_REG3_TRG_MASK)) | DCDC_REG3_TRG(0x12);
+    /* Waiting for DCDC_STS_DC_OK bit is asserted */
+    while (DCDC_REG0_STS_DC_OK_MASK != (DCDC_REG0_STS_DC_OK_MASK & DCDC->REG0)) {
+    }
+    /* Set AHB_PODF. */
+    CLOCK_SetDiv(kCLOCK_AhbDiv, 0);
+    /* Disable IPG clock gate. */
+    CLOCK_DisableClock(kCLOCK_Adc1);
+    CLOCK_DisableClock(kCLOCK_Xbar1);
+    /* Set IPG_PODF. */
+    CLOCK_SetDiv(kCLOCK_IpgDiv, 3);
+    /* Disable PERCLK clock gate. */
+    CLOCK_DisableClock(kCLOCK_Gpt1);
+    CLOCK_DisableClock(kCLOCK_Gpt1S);
+    CLOCK_DisableClock(kCLOCK_Gpt2);
+    CLOCK_DisableClock(kCLOCK_Gpt2S);
+    CLOCK_DisableClock(kCLOCK_Pit);
+    /* Set PERCLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_PerclkDiv, 1);
+    /* In SDK projects, external flash (configured by FLEXSPI) will be initialized by dcd.
+     * With this macro XIP_EXTERNAL_FLASH, usb1 pll (selected to be FLEXSPI clock source in SDK projects) will be left
+     * unchanged. Note: If another clock source is selected for FLEXSPI, user may want to avoid changing that clock as
+     * well.*/
+    #if !(defined(XIP_EXTERNAL_FLASH) && (XIP_EXTERNAL_FLASH == 1))
+    /* Disable Flexspi clock gate. */
+    CLOCK_DisableClock(kCLOCK_FlexSpi);
+    /* Set FLEXSPI_PODF. */
+    CLOCK_SetDiv(kCLOCK_FlexspiDiv, 3);
+    /* Set Flexspi clock source. */
+    CLOCK_SetMux(kCLOCK_FlexspiMux, 0);
+    CLOCK_SetMux(kCLOCK_FlexspiSrcMux, 0);
+    #endif
+    /* Disable ADC_ACLK_EN clock gate. */
+    CCM->CSCMR2 &= ~CCM_CSCMR2_ADC_ACLK_EN_MASK;
+    /* Set ADC_ACLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_AdcDiv, 11);
+    /* Disable LPSPI clock gate. */
+    CLOCK_DisableClock(kCLOCK_Lpspi1);
+    CLOCK_DisableClock(kCLOCK_Lpspi2);
+    /* Set LPSPI_PODF. */
+    CLOCK_SetDiv(kCLOCK_LpspiDiv, 4);
+    /* Set Lpspi clock source. */
+    CLOCK_SetMux(kCLOCK_LpspiMux, 2);
+    /* Disable TRACE clock gate. */
+    CLOCK_DisableClock(kCLOCK_Trace);
+    /* Set TRACE_PODF. */
+    CLOCK_SetDiv(kCLOCK_TraceDiv, 2);
+    /* Set Trace clock source. */
+    CLOCK_SetMux(kCLOCK_TraceMux, 2);
+    /* Disable SAI1 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Sai1);
+    /* Set SAI1_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Sai1PreDiv, 3);
+    /* Set SAI1_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Sai1Div, 1);
+    /* Set Sai1 clock source. */
+    CLOCK_SetMux(kCLOCK_Sai1Mux, 0);
+    /* Disable SAI3 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Sai3);
+    /* Set SAI3_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Sai3PreDiv, 3);
+    /* Set SAI3_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Sai3Div, 1);
+    /* Set Sai3 clock source. */
+    CLOCK_SetMux(kCLOCK_Sai3Mux, 0);
+    /* Disable Lpi2c clock gate. */
+    CLOCK_DisableClock(kCLOCK_Lpi2c1);
+    CLOCK_DisableClock(kCLOCK_Lpi2c2);
+    /* Set LPI2C_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Lpi2cDiv, 0);
+    /* Set Lpi2c clock source. */
+    CLOCK_SetMux(kCLOCK_Lpi2cMux, 0);
+    /* Disable UART clock gate. */
+    CLOCK_DisableClock(kCLOCK_Lpuart1);
+    CLOCK_DisableClock(kCLOCK_Lpuart2);
+    CLOCK_DisableClock(kCLOCK_Lpuart3);
+    CLOCK_DisableClock(kCLOCK_Lpuart4);
+    /* Set UART_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_UartDiv, 0);
+    /* Set Uart clock source. */
+    CLOCK_SetMux(kCLOCK_UartMux, 0);
+    /* Disable SPDIF clock gate. */
+    CLOCK_DisableClock(kCLOCK_Spdif);
+    /* Set SPDIF0_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Spdif0PreDiv, 1);
+    /* Set SPDIF0_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Spdif0Div, 7);
+    /* Set Spdif clock source. */
+    CLOCK_SetMux(kCLOCK_SpdifMux, 3);
+    /* Disable Flexio1 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Flexio1);
+    /* Set FLEXIO1_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Flexio1PreDiv, 1);
+    /* Set FLEXIO1_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Flexio1Div, 7);
+    /* Set Flexio1 clock source. */
+    CLOCK_SetMux(kCLOCK_Flexio1Mux, 3);
+    /* Set Pll3 sw clock source. */
+    CLOCK_SetMux(kCLOCK_Pll3SwMux, 0);
+    /* Init System PLL. */
+    CLOCK_InitSysPll(&sysPllConfig_BOARD_BootClockRUN);
+    /* Init System pfd0. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd0, 27);
+    /* Init System pfd1. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd1, 16);
+    /* Init System pfd2. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd2, 18);
+    /* Init System pfd3. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd3, 18);
+    /* In SDK projects, external flash (configured by FLEXSPI) will be initialized by dcd.
+     * With this macro XIP_EXTERNAL_FLASH, usb1 pll (selected to be FLEXSPI clock source in SDK projects) will be left
+     * unchanged. Note: If another clock source is selected for FLEXSPI, user may want to avoid changing that clock as
+     * well.*/
+    #if !(defined(XIP_EXTERNAL_FLASH) && (XIP_EXTERNAL_FLASH == 1))
+    /* Init Usb1 PLL. */
+    CLOCK_InitUsb1Pll(&usb1PllConfig_BOARD_BootClockRUN);
+    /* Init Usb1 pfd0. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd0, 22);
+    /* Init Usb1 pfd1. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd1, 16);
+    /* Init Usb1 pfd2. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd2, 17);
+    /* Init Usb1 pfd3. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd3, 18);
+    /* Disable Usb1 PLL output for USBPHY1. */
+    CCM_ANALOG->PLL_USB1 &= ~CCM_ANALOG_PLL_USB1_EN_USB_CLKS_MASK;
+    #endif
+    /* DeInit Audio PLL. */
+    CLOCK_DeinitAudioPll();
+    /* Bypass Audio PLL. */
+    CLOCK_SetPllBypass(CCM_ANALOG, kCLOCK_PllAudio, 1);
+    /* Set divider for Audio PLL. */
+    CCM_ANALOG->MISC2 &= ~CCM_ANALOG_MISC2_AUDIO_DIV_LSB_MASK;
+    CCM_ANALOG->MISC2 &= ~CCM_ANALOG_MISC2_AUDIO_DIV_MSB_MASK;
+    /* Enable Audio PLL output. */
+    CCM_ANALOG->PLL_AUDIO |= CCM_ANALOG_PLL_AUDIO_ENABLE_MASK;
+    /* Init Enet PLL. */
+    CLOCK_InitEnetPll(&enetPllConfig_BOARD_BootClockRUN);
+    /* Set preperiph clock source. */
+    CLOCK_SetMux(kCLOCK_PrePeriphMux, 3);
+    /* Set periph clock source. */
+    CLOCK_SetMux(kCLOCK_PeriphMux, 0);
+    /* Set periph clock2 clock source. */
+    CLOCK_SetMux(kCLOCK_PeriphClk2Mux, 0);
+    /* Set per clock source. */
+    CLOCK_SetMux(kCLOCK_PerclkMux, 0);
+    /* Set clock out1 divider. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO1_DIV_MASK)) | CCM_CCOSR_CLKO1_DIV(0);
+    /* Set clock out1 source. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO1_SEL_MASK)) | CCM_CCOSR_CLKO1_SEL(1);
+    /* Set clock out2 divider. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO2_DIV_MASK)) | CCM_CCOSR_CLKO2_DIV(0);
+    /* Set clock out2 source. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO2_SEL_MASK)) | CCM_CCOSR_CLKO2_SEL(18);
+    /* Set clock out1 drives clock out1. */
+    CCM->CCOSR &= ~CCM_CCOSR_CLK_OUT_SEL_MASK;
+    /* Disable clock out1. */
+    CCM->CCOSR &= ~CCM_CCOSR_CLKO1_EN_MASK;
+    /* Disable clock out2. */
+    CCM->CCOSR &= ~CCM_CCOSR_CLKO2_EN_MASK;
+    /* Set SAI1 MCLK1 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI1MClk1Sel, 0);
+    /* Set SAI1 MCLK2 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI1MClk2Sel, 0);
+    /* Set SAI1 MCLK3 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI1MClk3Sel, 0);
+    /* Set SAI3 MCLK3 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI3MClk3Sel, 0);
+    /* Set MQS configuration. */
+    IOMUXC_MQSConfig(IOMUXC_GPR, kIOMUXC_MqsPwmOverSampleRate32, 0);
+    /* Set GPT1 High frequency reference clock source. */
+    IOMUXC_GPR->GPR5 &= ~IOMUXC_GPR_GPR5_VREF_1M_CLK_GPT1_MASK;
+    /* Set GPT2 High frequency reference clock source. */
+    IOMUXC_GPR->GPR5 &= ~IOMUXC_GPR_GPR5_VREF_1M_CLK_GPT2_MASK;
+    /* Set SystemCoreClock variable. */
+    SystemCoreClock = BOARD_BOOTCLOCKRUN_CORE_CLOCK;
+}
diff --git a/ports/mimxrt/boards/MIMXRT1010_EVK/clock_config.h b/ports/mimxrt/boards/MIMXRT1011_clock_config.h
similarity index 100%
rename from ports/mimxrt/boards/MIMXRT1010_EVK/clock_config.h
rename to ports/mimxrt/boards/MIMXRT1011_clock_config.h
diff --git a/ports/mimxrt/boards/MIMXRT1015_clock_config.c b/ports/mimxrt/boards/MIMXRT1015_clock_config.c
new file mode 100644
index 0000000000..7cc91f9511
--- /dev/null
+++ b/ports/mimxrt/boards/MIMXRT1015_clock_config.c
@@ -0,0 +1,359 @@
+/*
+ * Copyright 2018-2019 NXP
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * How to setup clock using clock driver functions:
+ *
+ * 1. Call CLOCK_InitXXXPLL() to configure corresponding PLL clock.
+ *
+ * 2. Call CLOCK_InitXXXpfd() to configure corresponding PLL pfd clock.
+ *
+ * 3. Call CLOCK_SetMux() to configure corresponding clock source for target clock out.
+ *
+ * 4. Call CLOCK_SetDiv() to configure corresponding clock divider for target clock out.
+ *
+ * 5. Call CLOCK_SetXtalFreq() to set XTAL frequency based on board settings.
+ *
+ */
+
+/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
+!!GlobalInfo
+product: Clocks v5.0
+processor: MIMXRT1015xxxxx
+package_id: MIMXRT1015DAF5A
+mcu_data: ksdk2_0
+processor_version: 0.0.0
+board: MIMXRT1015-EVK
+ * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
+
+#include CLOCK_CONFIG_H
+#include "fsl_iomuxc.h"
+
+/*******************************************************************************
+ * Definitions
+ ******************************************************************************/
+
+/*******************************************************************************
+ * Variables
+ ******************************************************************************/
+/* System clock frequency. */
+extern uint32_t SystemCoreClock;
+
+/*******************************************************************************
+ ************************ BOARD_InitBootClocks function ************************
+ ******************************************************************************/
+void BOARD_InitBootClocks(void) {
+    BOARD_BootClockRUN();
+}
+
+/*******************************************************************************
+ ********************** Configuration BOARD_BootClockRUN ***********************
+ ******************************************************************************/
+/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
+!!Configuration
+name: BOARD_BootClockRUN
+called_from_default_init: true
+outputs:
+- {id: AHB_CLK_ROOT.outFreq, value: 500 MHz}
+- {id: CKIL_SYNC_CLK_ROOT.outFreq, value: 32.768 kHz}
+- {id: CLK_1M.outFreq, value: 1 MHz}
+- {id: CLK_24M.outFreq, value: 24 MHz}
+- {id: ENET_500M_REF_CLK.outFreq, value: 500 MHz}
+- {id: FLEXIO1_CLK_ROOT.outFreq, value: 30 MHz}
+- {id: FLEXSPI_CLK_ROOT.outFreq, value: 125 MHz}
+- {id: GPT1_ipg_clk_highfreq.outFreq, value: 62.5 MHz}
+- {id: GPT2_ipg_clk_highfreq.outFreq, value: 62.5 MHz}
+- {id: IPG_CLK_ROOT.outFreq, value: 125 MHz}
+- {id: LPI2C_CLK_ROOT.outFreq, value: 60 MHz}
+- {id: LPSPI_CLK_ROOT.outFreq, value: 105.6 MHz}
+- {id: MQS_MCLK.outFreq, value: 1080/17 MHz}
+- {id: PERCLK_CLK_ROOT.outFreq, value: 62.5 MHz}
+- {id: SAI1_CLK_ROOT.outFreq, value: 1080/17 MHz}
+- {id: SAI1_MCLK1.outFreq, value: 1080/17 MHz}
+- {id: SAI1_MCLK2.outFreq, value: 1080/17 MHz}
+- {id: SAI1_MCLK3.outFreq, value: 30 MHz}
+- {id: SAI2_CLK_ROOT.outFreq, value: 1080/17 MHz}
+- {id: SAI2_MCLK1.outFreq, value: 1080/17 MHz}
+- {id: SAI2_MCLK3.outFreq, value: 30 MHz}
+- {id: SAI3_CLK_ROOT.outFreq, value: 1080/17 MHz}
+- {id: SAI3_MCLK1.outFreq, value: 1080/17 MHz}
+- {id: SAI3_MCLK3.outFreq, value: 30 MHz}
+- {id: SPDIF0_CLK_ROOT.outFreq, value: 30 MHz}
+- {id: TRACE_CLK_ROOT.outFreq, value: 352/3 MHz}
+- {id: UART_CLK_ROOT.outFreq, value: 80 MHz}
+settings:
+- {id: CCM.AHB_PODF.scale, value: '1', locked: true}
+- {id: CCM.ARM_PODF.scale, value: '1', locked: true}
+- {id: CCM.CLKO2_SEL.sel, value: CCM.LPI2C_CLK_ROOT}
+- {id: CCM.FLEXSPI_PODF.scale, value: '2', locked: true}
+- {id: CCM.IPG_PODF.scale, value: '4'}
+- {id: CCM.LPSPI_PODF.scale, value: '5', locked: true}
+- {id: CCM.PERCLK_PODF.scale, value: '2', locked: true}
+- {id: CCM.PRE_PERIPH_CLK_SEL.sel, value: CCM.ARM_PODF}
+- {id: CCM.SEMC_PODF.scale, value: '2'}
+- {id: CCM.TRACE_PODF.scale, value: '3', locked: true}
+- {id: CCM_ANALOG.PLL2.denom, value: '1', locked: true}
+- {id: CCM_ANALOG.PLL2.num, value: '0', locked: true}
+- {id: CCM_ANALOG.PLL2_BYPASS.sel, value: CCM_ANALOG.PLL2_OUT_CLK}
+- {id: CCM_ANALOG.PLL2_PFD0_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD0}
+- {id: CCM_ANALOG.PLL2_PFD1_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD1}
+- {id: CCM_ANALOG.PLL2_PFD2_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD2}
+- {id: CCM_ANALOG.PLL2_PFD2_DIV.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL2_PFD2_MUL.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL2_PFD3_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD3}
+- {id: CCM_ANALOG.PLL2_PFD3_DIV.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL2_PFD3_MUL.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL3_BYPASS.sel, value: CCM_ANALOG.PLL3}
+- {id: CCM_ANALOG.PLL3_PFD0_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD0}
+- {id: CCM_ANALOG.PLL3_PFD0_DIV.scale, value: '22', locked: true}
+- {id: CCM_ANALOG.PLL3_PFD0_MUL.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL3_PFD1_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD1}
+- {id: CCM_ANALOG.PLL3_PFD2_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD2}
+- {id: CCM_ANALOG.PLL3_PFD3_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD3}
+- {id: CCM_ANALOG.PLL3_PFD3_DIV.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL3_PFD3_MUL.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL4.denom, value: '50'}
+- {id: CCM_ANALOG.PLL4.div, value: '47'}
+- {id: CCM_ANALOG.PLL6_BYPASS.sel, value: CCM_ANALOG.PLL6}
+- {id: CCM_ANALOG_PLL_USB1_POWER_CFG, value: 'Yes'}
+sources:
+- {id: XTALOSC24M.OSC.outFreq, value: 24 MHz, enabled: true}
+- {id: XTALOSC24M.RTC_OSC.outFreq, value: 32.768 kHz, enabled: true}
+ * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
+
+/*******************************************************************************
+ * Variables for BOARD_BootClockRUN configuration
+ ******************************************************************************/
+const clock_sys_pll_config_t sysPllConfig_BOARD_BootClockRUN = {
+    .loopDivider = 1,                             /* PLL loop divider, Fout = Fin * ( 20 + loopDivider*2 + numerator / denominator ) */
+    .numerator = 0,                               /* 30 bit numerator of fractional loop divider */
+    .denominator = 1,                             /* 30 bit denominator of fractional loop divider */
+    .src = 0,                                     /* Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N */
+};
+const clock_usb_pll_config_t usb1PllConfig_BOARD_BootClockRUN = {
+    .loopDivider = 0,                             /* PLL loop divider, Fout = Fin * 20 */
+    .src = 0,                                     /* Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N */
+};
+const clock_enet_pll_config_t enetPllConfig_BOARD_BootClockRUN = {
+    .enableClkOutput500M = true,                  /* Enable the PLL providing the ENET 500MHz reference clock */
+    .src = 0,                                     /* Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N */
+};
+/*******************************************************************************
+ * Code for BOARD_BootClockRUN configuration
+ ******************************************************************************/
+void BOARD_BootClockRUN(void) {
+    /* Init RTC OSC clock frequency. */
+    CLOCK_SetRtcXtalFreq(32768U);
+    /* Enable 1MHz clock output. */
+    XTALOSC24M->OSC_CONFIG2 |= XTALOSC24M_OSC_CONFIG2_ENABLE_1M_MASK;
+    /* Use free 1MHz clock output. */
+    XTALOSC24M->OSC_CONFIG2 &= ~XTALOSC24M_OSC_CONFIG2_MUX_1M_MASK;
+    /* Set XTAL 24MHz clock frequency. */
+    CLOCK_SetXtalFreq(24000000U);
+    /* Enable XTAL 24MHz clock source. */
+    CLOCK_InitExternalClk(0);
+    /* Enable internal RC. */
+    CLOCK_InitRcOsc24M();
+    /* Switch clock source to external OSC. */
+    CLOCK_SwitchOsc(kCLOCK_XtalOsc);
+    /* Set Oscillator ready counter value. */
+    CCM->CCR = (CCM->CCR & (~CCM_CCR_OSCNT_MASK)) | CCM_CCR_OSCNT(127);
+    /* Setting PeriphClk2Mux and PeriphMux to provide stable clock before PLLs are initialed */
+    CLOCK_SetMux(kCLOCK_PeriphClk2Mux, 1); /* Set PERIPH_CLK2 MUX to OSC */
+    CLOCK_SetMux(kCLOCK_PeriphMux, 1);     /* Set PERIPH_CLK MUX to PERIPH_CLK2 */
+    /* Setting the VDD_SOC to 1.5V. It is necessary to config AHB to 500Mhz. */
+    DCDC->REG3 = (DCDC->REG3 & (~DCDC_REG3_TRG_MASK)) | DCDC_REG3_TRG(0x12);
+    /* Waiting for DCDC_STS_DC_OK bit is asserted */
+    while (DCDC_REG0_STS_DC_OK_MASK != (DCDC_REG0_STS_DC_OK_MASK & DCDC->REG0)) {
+    }
+    /* Set AHB_PODF. */
+    CLOCK_SetDiv(kCLOCK_AhbDiv, 0);
+    /* Disable IPG clock gate. */
+    CLOCK_DisableClock(kCLOCK_Adc1);
+    CLOCK_DisableClock(kCLOCK_Xbar1);
+    CLOCK_DisableClock(kCLOCK_Xbar2);
+    /* Set IPG_PODF. */
+    CLOCK_SetDiv(kCLOCK_IpgDiv, 3);
+    /* Set ARM_PODF. */
+    CLOCK_SetDiv(kCLOCK_ArmDiv, 0);
+    /* Set PERIPH_CLK2_PODF. */
+    CLOCK_SetDiv(kCLOCK_PeriphClk2Div, 0);
+    /* Disable PERCLK clock gate. */
+    CLOCK_DisableClock(kCLOCK_Gpt1);
+    CLOCK_DisableClock(kCLOCK_Gpt1S);
+    CLOCK_DisableClock(kCLOCK_Gpt2);
+    CLOCK_DisableClock(kCLOCK_Gpt2S);
+    CLOCK_DisableClock(kCLOCK_Pit);
+    /* Set PERCLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_PerclkDiv, 1);
+    /* Set SEMC_PODF. */
+    CLOCK_SetDiv(kCLOCK_SemcDiv, 1);
+    /* Set Semc alt clock source. */
+    CLOCK_SetMux(kCLOCK_SemcAltMux, 0);
+    /* Set Semc clock source. */
+    CLOCK_SetMux(kCLOCK_SemcMux, 0);
+    /* In SDK projects, external flash (configured by FLEXSPI) will be initialized by dcd.
+     * With this macro XIP_EXTERNAL_FLASH, usb1 pll (selected to be FLEXSPI clock source in SDK projects) will be left unchanged.
+     * Note: If another clock source is selected for FLEXSPI, user may want to avoid changing that clock as well.*/
+    #if !(defined(XIP_EXTERNAL_FLASH) && (XIP_EXTERNAL_FLASH == 1))
+    /* Disable Flexspi clock gate. */
+    CLOCK_DisableClock(kCLOCK_FlexSpi);
+    /* Set FLEXSPI_PODF. */
+    CLOCK_SetDiv(kCLOCK_FlexspiDiv, 1);
+    /* Set Flexspi clock source. */
+    CLOCK_SetMux(kCLOCK_FlexspiMux, 0);
+    #endif
+    /* Disable LPSPI clock gate. */
+    CLOCK_DisableClock(kCLOCK_Lpspi1);
+    CLOCK_DisableClock(kCLOCK_Lpspi2);
+    /* Set LPSPI_PODF. */
+    CLOCK_SetDiv(kCLOCK_LpspiDiv, 4);
+    /* Set Lpspi clock source. */
+    CLOCK_SetMux(kCLOCK_LpspiMux, 2);
+    /* Disable TRACE clock gate. */
+    CLOCK_DisableClock(kCLOCK_Trace);
+    /* Set TRACE_PODF. */
+    CLOCK_SetDiv(kCLOCK_TraceDiv, 2);
+    /* Set Trace clock source. */
+    CLOCK_SetMux(kCLOCK_TraceMux, 2);
+    /* Disable SAI1 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Sai1);
+    /* Set SAI1_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Sai1PreDiv, 3);
+    /* Set SAI1_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Sai1Div, 1);
+    /* Set Sai1 clock source. */
+    CLOCK_SetMux(kCLOCK_Sai1Mux, 0);
+    /* Disable SAI2 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Sai2);
+    /* Set SAI2_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Sai2PreDiv, 3);
+    /* Set SAI2_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Sai2Div, 1);
+    /* Set Sai2 clock source. */
+    CLOCK_SetMux(kCLOCK_Sai2Mux, 0);
+    /* Disable SAI3 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Sai3);
+    /* Set SAI3_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Sai3PreDiv, 3);
+    /* Set SAI3_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Sai3Div, 1);
+    /* Set Sai3 clock source. */
+    CLOCK_SetMux(kCLOCK_Sai3Mux, 0);
+    /* Disable Lpi2c clock gate. */
+    CLOCK_DisableClock(kCLOCK_Lpi2c1);
+    CLOCK_DisableClock(kCLOCK_Lpi2c2);
+    /* Set LPI2C_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Lpi2cDiv, 0);
+    /* Set Lpi2c clock source. */
+    CLOCK_SetMux(kCLOCK_Lpi2cMux, 0);
+    /* Disable UART clock gate. */
+    CLOCK_DisableClock(kCLOCK_Lpuart1);
+    CLOCK_DisableClock(kCLOCK_Lpuart2);
+    CLOCK_DisableClock(kCLOCK_Lpuart3);
+    CLOCK_DisableClock(kCLOCK_Lpuart4);
+    /* Set UART_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_UartDiv, 0);
+    /* Set Uart clock source. */
+    CLOCK_SetMux(kCLOCK_UartMux, 0);
+    /* Disable SPDIF clock gate. */
+    CLOCK_DisableClock(kCLOCK_Spdif);
+    /* Set SPDIF0_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Spdif0PreDiv, 1);
+    /* Set SPDIF0_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Spdif0Div, 7);
+    /* Set Spdif clock source. */
+    CLOCK_SetMux(kCLOCK_SpdifMux, 3);
+    /* Disable Flexio1 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Flexio1);
+    /* Set FLEXIO1_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Flexio1PreDiv, 1);
+    /* Set FLEXIO1_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Flexio1Div, 7);
+    /* Set Flexio1 clock source. */
+    CLOCK_SetMux(kCLOCK_Flexio1Mux, 3);
+    /* Set Pll3 sw clock source. */
+    CLOCK_SetMux(kCLOCK_Pll3SwMux, 0);
+    /* Init System PLL. */
+    CLOCK_InitSysPll(&sysPllConfig_BOARD_BootClockRUN);
+    /* Init System pfd0. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd0, 27);
+    /* Init System pfd1. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd1, 16);
+    /* Init System pfd2. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd2, 18);
+    /* Init System pfd3. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd3, 18);
+    /* In SDK projects, external flash (configured by FLEXSPI) will be initialized by dcd.
+     * With this macro XIP_EXTERNAL_FLASH, usb1 pll (selected to be FLEXSPI clock source in SDK projects) will be left unchanged.
+     * Note: If another clock source is selected for FLEXSPI, user may want to avoid changing that clock as well.*/
+    #if !(defined(XIP_EXTERNAL_FLASH) && (XIP_EXTERNAL_FLASH == 1))
+    /* Init Usb1 PLL. */
+    CLOCK_InitUsb1Pll(&usb1PllConfig_BOARD_BootClockRUN);
+    /* Init Usb1 pfd0. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd0, 22);
+    /* Init Usb1 pfd1. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd1, 16);
+    /* Init Usb1 pfd2. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd2, 17);
+    /* Init Usb1 pfd3. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd3, 18);
+    /* Disable Usb1 PLL output for USBPHY1. */
+    CCM_ANALOG->PLL_USB1 &= ~CCM_ANALOG_PLL_USB1_EN_USB_CLKS_MASK;
+    #endif
+    /* DeInit Audio PLL. */
+    CLOCK_DeinitAudioPll();
+    /* Bypass Audio PLL. */
+    CLOCK_SetPllBypass(CCM_ANALOG, kCLOCK_PllAudio, 1);
+    /* Set divider for Audio PLL. */
+    CCM_ANALOG->MISC2 &= ~CCM_ANALOG_MISC2_AUDIO_DIV_LSB_MASK;
+    CCM_ANALOG->MISC2 &= ~CCM_ANALOG_MISC2_AUDIO_DIV_MSB_MASK;
+    /* Enable Audio PLL output. */
+    CCM_ANALOG->PLL_AUDIO |= CCM_ANALOG_PLL_AUDIO_ENABLE_MASK;
+    /* Init Enet PLL. */
+    CLOCK_InitEnetPll(&enetPllConfig_BOARD_BootClockRUN);
+    /* Set preperiph clock source. */
+    CLOCK_SetMux(kCLOCK_PrePeriphMux, 3);
+    /* Set periph clock source. */
+    CLOCK_SetMux(kCLOCK_PeriphMux, 0);
+    /* Set periph clock2 clock source. */
+    CLOCK_SetMux(kCLOCK_PeriphClk2Mux, 0);
+    /* Set per clock source. */
+    CLOCK_SetMux(kCLOCK_PerclkMux, 0);
+    /* Set clock out1 divider. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO1_DIV_MASK)) | CCM_CCOSR_CLKO1_DIV(0);
+    /* Set clock out1 source. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO1_SEL_MASK)) | CCM_CCOSR_CLKO1_SEL(1);
+    /* Set clock out2 divider. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO2_DIV_MASK)) | CCM_CCOSR_CLKO2_DIV(0);
+    /* Set clock out2 source. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO2_SEL_MASK)) | CCM_CCOSR_CLKO2_SEL(6);
+    /* Set clock out1 drives clock out1. */
+    CCM->CCOSR &= ~CCM_CCOSR_CLK_OUT_SEL_MASK;
+    /* Disable clock out1. */
+    CCM->CCOSR &= ~CCM_CCOSR_CLKO1_EN_MASK;
+    /* Disable clock out2. */
+    CCM->CCOSR &= ~CCM_CCOSR_CLKO2_EN_MASK;
+    /* Set SAI1 MCLK1 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI1MClk1Sel, 0);
+    /* Set SAI1 MCLK2 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI1MClk2Sel, 0);
+    /* Set SAI1 MCLK3 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI1MClk3Sel, 0);
+    /* Set SAI2 MCLK3 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI2MClk3Sel, 0);
+    /* Set SAI3 MCLK3 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI3MClk3Sel, 0);
+    /* Set MQS configuration. */
+    IOMUXC_MQSConfig(IOMUXC_GPR, kIOMUXC_MqsPwmOverSampleRate32, 0);
+    /* Set GPT1 High frequency reference clock source. */
+    IOMUXC_GPR->GPR5 &= ~IOMUXC_GPR_GPR5_VREF_1M_CLK_GPT1_MASK;
+    /* Set GPT2 High frequency reference clock source. */
+    IOMUXC_GPR->GPR5 &= ~IOMUXC_GPR_GPR5_VREF_1M_CLK_GPT2_MASK;
+    /* Set SystemCoreClock variable. */
+    SystemCoreClock = BOARD_BOOTCLOCKRUN_CORE_CLOCK;
+}
diff --git a/ports/mimxrt/boards/MIMXRT1015_EVK/clock_config.h b/ports/mimxrt/boards/MIMXRT1015_clock_config.h
similarity index 100%
rename from ports/mimxrt/boards/MIMXRT1015_EVK/clock_config.h
rename to ports/mimxrt/boards/MIMXRT1015_clock_config.h
diff --git a/ports/mimxrt/boards/MIMXRT1021_clock_config.c b/ports/mimxrt/boards/MIMXRT1021_clock_config.c
new file mode 100644
index 0000000000..1b8792dd2d
--- /dev/null
+++ b/ports/mimxrt/boards/MIMXRT1021_clock_config.c
@@ -0,0 +1,417 @@
+/*
+ * Copyright 2018-2019 NXP
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * How to setup clock using clock driver functions:
+ *
+ * 1. Call CLOCK_InitXXXPLL() to configure corresponding PLL clock.
+ *
+ * 2. Call CLOCK_InitXXXpfd() to configure corresponding PLL pfd clock.
+ *
+ * 3. Call CLOCK_SetMux() to configure corresponding clock source for target clock out.
+ *
+ * 4. Call CLOCK_SetDiv() to configure corresponding clock divider for target clock out.
+ *
+ * 5. Call CLOCK_SetXtalFreq() to set XTAL frequency based on board settings.
+ *
+ */
+
+/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
+!!GlobalInfo
+product: Clocks v5.0
+processor: MIMXRT1021xxxxx
+package_id: MIMXRT1021DAG5A
+mcu_data: ksdk2_0
+processor_version: 0.0.0
+board: MIMXRT1020-EVK
+ * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
+
+#include CLOCK_CONFIG_H
+#include "fsl_iomuxc.h"
+
+/*******************************************************************************
+ * Definitions
+ ******************************************************************************/
+
+/*******************************************************************************
+ * Variables
+ ******************************************************************************/
+/* System clock frequency. */
+extern uint32_t SystemCoreClock;
+
+/*******************************************************************************
+ ************************ BOARD_InitBootClocks function ************************
+ ******************************************************************************/
+void BOARD_InitBootClocks(void) {
+    BOARD_BootClockRUN();
+}
+
+/*******************************************************************************
+ ********************** Configuration BOARD_BootClockRUN ***********************
+ ******************************************************************************/
+/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
+!!Configuration
+name: BOARD_BootClockRUN
+called_from_default_init: true
+outputs:
+- {id: AHB_CLK_ROOT.outFreq, value: 500 MHz}
+- {id: CAN_CLK_ROOT.outFreq, value: 40 MHz}
+- {id: CKIL_SYNC_CLK_ROOT.outFreq, value: 32.768 kHz}
+- {id: CLK_1M.outFreq, value: 1 MHz}
+- {id: CLK_24M.outFreq, value: 24 MHz}
+- {id: ENET_500M_REF_CLK.outFreq, value: 500 MHz}
+- {id: FLEXIO1_CLK_ROOT.outFreq, value: 30 MHz}
+- {id: FLEXSPI_CLK_ROOT.outFreq, value: 132 MHz}
+- {id: GPT1_ipg_clk_highfreq.outFreq, value: 62.5 MHz}
+- {id: GPT2_ipg_clk_highfreq.outFreq, value: 62.5 MHz}
+- {id: IPG_CLK_ROOT.outFreq, value: 125 MHz}
+- {id: LPI2C_CLK_ROOT.outFreq, value: 60 MHz}
+- {id: LPSPI_CLK_ROOT.outFreq, value: 105.6 MHz}
+- {id: MQS_MCLK.outFreq, value: 1080/17 MHz}
+- {id: PERCLK_CLK_ROOT.outFreq, value: 62.5 MHz}
+- {id: SAI1_CLK_ROOT.outFreq, value: 1080/17 MHz}
+- {id: SAI1_MCLK1.outFreq, value: 1080/17 MHz}
+- {id: SAI1_MCLK2.outFreq, value: 1080/17 MHz}
+- {id: SAI1_MCLK3.outFreq, value: 30 MHz}
+- {id: SAI2_CLK_ROOT.outFreq, value: 1080/17 MHz}
+- {id: SAI2_MCLK1.outFreq, value: 1080/17 MHz}
+- {id: SAI2_MCLK3.outFreq, value: 30 MHz}
+- {id: SAI3_CLK_ROOT.outFreq, value: 1080/17 MHz}
+- {id: SAI3_MCLK1.outFreq, value: 1080/17 MHz}
+- {id: SAI3_MCLK3.outFreq, value: 30 MHz}
+- {id: SEMC_CLK_ROOT.outFreq, value: 62.5 MHz}
+- {id: SPDIF0_CLK_ROOT.outFreq, value: 30 MHz}
+- {id: TRACE_CLK_ROOT.outFreq, value: 352/3 MHz}
+- {id: UART_CLK_ROOT.outFreq, value: 80 MHz}
+- {id: USDHC1_CLK_ROOT.outFreq, value: 176 MHz}
+- {id: USDHC2_CLK_ROOT.outFreq, value: 176 MHz}
+settings:
+- {id: CCM.AHB_PODF.scale, value: '1', locked: true}
+- {id: CCM.ARM_PODF.scale, value: '1', locked: true}
+- {id: CCM.FLEXSPI_PODF.scale, value: '4', locked: true}
+- {id: CCM.FLEXSPI_SEL.sel, value: CCM_ANALOG.PLL2_PFD2_CLK}
+- {id: CCM.IPG_PODF.scale, value: '4'}
+- {id: CCM.LPSPI_PODF.scale, value: '5', locked: true}
+- {id: CCM.PERCLK_PODF.scale, value: '2', locked: true}
+- {id: CCM.PRE_PERIPH_CLK_SEL.sel, value: CCM.ARM_PODF}
+- {id: CCM.SEMC_PODF.scale, value: '8'}
+- {id: CCM.TRACE_PODF.scale, value: '3', locked: true}
+- {id: CCM.USDHC1_PODF.scale, value: '3', locked: true}
+- {id: CCM.USDHC2_PODF.scale, value: '3', locked: true}
+- {id: CCM_ANALOG.PLL2.denom, value: '1', locked: true}
+- {id: CCM_ANALOG.PLL2.num, value: '0', locked: true}
+- {id: CCM_ANALOG.PLL2_BYPASS.sel, value: CCM_ANALOG.PLL2_OUT_CLK}
+- {id: CCM_ANALOG.PLL2_PFD0_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD0}
+- {id: CCM_ANALOG.PLL2_PFD1_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD1}
+- {id: CCM_ANALOG.PLL2_PFD2_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD2}
+- {id: CCM_ANALOG.PLL2_PFD2_DIV.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL2_PFD2_MUL.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL2_PFD3_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD3}
+- {id: CCM_ANALOG.PLL2_PFD3_DIV.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL2_PFD3_MUL.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL3_BYPASS.sel, value: CCM_ANALOG.PLL3}
+- {id: CCM_ANALOG.PLL3_PFD0_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD0}
+- {id: CCM_ANALOG.PLL3_PFD0_DIV.scale, value: '22', locked: true}
+- {id: CCM_ANALOG.PLL3_PFD0_MUL.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL3_PFD1_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD1}
+- {id: CCM_ANALOG.PLL3_PFD2_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD2}
+- {id: CCM_ANALOG.PLL3_PFD3_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD3}
+- {id: CCM_ANALOG.PLL3_PFD3_DIV.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL3_PFD3_MUL.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL4.denom, value: '50'}
+- {id: CCM_ANALOG.PLL4.div, value: '47'}
+- {id: CCM_ANALOG.PLL6_BYPASS.sel, value: CCM_ANALOG.PLL6}
+- {id: CCM_ANALOG_PLL_ENET_ENABLE_CFG, value: Disabled}
+- {id: CCM_ANALOG_PLL_ENET_ENET_25M_REF_EN_CFG, value: Disabled}
+- {id: CCM_ANALOG_PLL_USB1_POWER_CFG, value: 'Yes'}
+sources:
+- {id: XTALOSC24M.OSC.outFreq, value: 24 MHz, enabled: true}
+- {id: XTALOSC24M.RTC_OSC.outFreq, value: 32.768 kHz, enabled: true}
+ * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
+
+/*******************************************************************************
+ * Variables for BOARD_BootClockRUN configuration
+ ******************************************************************************/
+const clock_sys_pll_config_t sysPllConfig_BOARD_BootClockRUN = {
+    .loopDivider = 1, /* PLL loop divider, Fout = Fin * ( 20 + loopDivider*2 + numerator / denominator ) */
+    .numerator = 0,   /* 30 bit numerator of fractional loop divider */
+    .denominator = 1, /* 30 bit denominator of fractional loop divider */
+    .src = 0,         /* Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N */
+};
+const clock_usb_pll_config_t usb1PllConfig_BOARD_BootClockRUN = {
+    .loopDivider = 0, /* PLL loop divider, Fout = Fin * 20 */
+    .src = 0,         /* Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N */
+};
+const clock_enet_pll_config_t enetPllConfig_BOARD_BootClockRUN = {
+    .enableClkOutput = false,     /* Disable the PLL providing the ENET 125MHz reference clock */
+    .enableClkOutput500M = true,  /* Enable the PLL providing the ENET 500MHz reference clock */
+    .enableClkOutput25M = false,  /* Disable the PLL providing the ENET 25MHz reference clock */
+    .loopDivider = 1,             /* Set frequency of ethernet reference clock to 50 MHz */
+    .src = 0,                     /* Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N */
+};
+/*******************************************************************************
+ * Code for BOARD_BootClockRUN configuration
+ ******************************************************************************/
+void BOARD_BootClockRUN(void) {
+    /* Init RTC OSC clock frequency. */
+    CLOCK_SetRtcXtalFreq(32768U);
+    /* Enable 1MHz clock output. */
+    XTALOSC24M->OSC_CONFIG2 |= XTALOSC24M_OSC_CONFIG2_ENABLE_1M_MASK;
+    /* Use free 1MHz clock output. */
+    XTALOSC24M->OSC_CONFIG2 &= ~XTALOSC24M_OSC_CONFIG2_MUX_1M_MASK;
+    /* Set XTAL 24MHz clock frequency. */
+    CLOCK_SetXtalFreq(24000000U);
+    /* Enable XTAL 24MHz clock source. */
+    CLOCK_InitExternalClk(0);
+    /* Enable internal RC. */
+    CLOCK_InitRcOsc24M();
+    /* Switch clock source to external OSC. */
+    CLOCK_SwitchOsc(kCLOCK_XtalOsc);
+    /* Set Oscillator ready counter value. */
+    CCM->CCR = (CCM->CCR & (~CCM_CCR_OSCNT_MASK)) | CCM_CCR_OSCNT(127);
+    /* Setting PeriphClk2Mux and PeriphMux to provide stable clock before PLLs are initialed */
+    CLOCK_SetMux(kCLOCK_PeriphClk2Mux, 1); /* Set PERIPH_CLK2 MUX to OSC */
+    CLOCK_SetMux(kCLOCK_PeriphMux, 1);     /* Set PERIPH_CLK MUX to PERIPH_CLK2 */
+    /* Setting the VDD_SOC to 1.5V. It is necessary to config AHB to 500Mhz. */
+    DCDC->REG3 = (DCDC->REG3 & (~DCDC_REG3_TRG_MASK)) | DCDC_REG3_TRG(0x12);
+    /* Waiting for DCDC_STS_DC_OK bit is asserted */
+    while (DCDC_REG0_STS_DC_OK_MASK != (DCDC_REG0_STS_DC_OK_MASK & DCDC->REG0)) {
+    }
+    /* Set AHB_PODF. */
+    CLOCK_SetDiv(kCLOCK_AhbDiv, 0);
+    /* Disable IPG clock gate. */
+    CLOCK_DisableClock(kCLOCK_Adc1);
+    CLOCK_DisableClock(kCLOCK_Adc2);
+    CLOCK_DisableClock(kCLOCK_Xbar1);
+    CLOCK_DisableClock(kCLOCK_Xbar2);
+    /* Set IPG_PODF. */
+    CLOCK_SetDiv(kCLOCK_IpgDiv, 3);
+    /* Set ARM_PODF. */
+    CLOCK_SetDiv(kCLOCK_ArmDiv, 0);
+    /* Set PERIPH_CLK2_PODF. */
+    CLOCK_SetDiv(kCLOCK_PeriphClk2Div, 0);
+    /* Disable PERCLK clock gate. */
+    CLOCK_DisableClock(kCLOCK_Gpt1);
+    CLOCK_DisableClock(kCLOCK_Gpt1S);
+    CLOCK_DisableClock(kCLOCK_Gpt2);
+    CLOCK_DisableClock(kCLOCK_Gpt2S);
+    CLOCK_DisableClock(kCLOCK_Pit);
+    /* Set PERCLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_PerclkDiv, 1);
+    /* Disable USDHC1 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Usdhc1);
+    /* Set USDHC1_PODF. */
+    CLOCK_SetDiv(kCLOCK_Usdhc1Div, 2);
+    /* Set Usdhc1 clock source. */
+    CLOCK_SetMux(kCLOCK_Usdhc1Mux, 0);
+    /* Disable USDHC2 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Usdhc2);
+    /* Set USDHC2_PODF. */
+    CLOCK_SetDiv(kCLOCK_Usdhc2Div, 2);
+    /* Set Usdhc2 clock source. */
+    CLOCK_SetMux(kCLOCK_Usdhc2Mux, 0);
+    /* In SDK projects, SDRAM (configured by SEMC) will be initialized in either debug script or dcd.
+     * With this macro SKIP_SYSCLK_INIT, system pll (selected to be SEMC source clock in SDK projects) will be left
+     * unchanged. Note: If another clock source is selected for SEMC, user may want to avoid changing that clock as
+     * well.*/
+    #ifndef SKIP_SYSCLK_INIT
+    /* Disable Semc clock gate. */
+    CLOCK_DisableClock(kCLOCK_Semc);
+    /* Set SEMC_PODF. */
+    CLOCK_SetDiv(kCLOCK_SemcDiv, 7);
+    /* Set Semc alt clock source. */
+    CLOCK_SetMux(kCLOCK_SemcAltMux, 0);
+    /* Set Semc clock source. */
+    CLOCK_SetMux(kCLOCK_SemcMux, 0);
+    #endif
+    /* In SDK projects, external flash (configured by FLEXSPI) will be initialized by dcd.
+     * With this macro XIP_EXTERNAL_FLASH, usb1 pll (selected to be FLEXSPI clock source in SDK projects) will be left
+     * unchanged. Note: If another clock source is selected for FLEXSPI, user may want to avoid changing that clock as
+     * well.*/
+    #if !(defined(XIP_EXTERNAL_FLASH) && (XIP_EXTERNAL_FLASH == 1))
+    /* Disable Flexspi clock gate. */
+    CLOCK_DisableClock(kCLOCK_FlexSpi);
+    /* Set FLEXSPI_PODF. */
+    CLOCK_SetDiv(kCLOCK_FlexspiDiv, 3);
+    /* Set Flexspi clock source. */
+    CLOCK_SetMux(kCLOCK_FlexspiMux, 2);
+    #endif
+    /* Disable LPSPI clock gate. */
+    CLOCK_DisableClock(kCLOCK_Lpspi1);
+    CLOCK_DisableClock(kCLOCK_Lpspi2);
+    CLOCK_DisableClock(kCLOCK_Lpspi3);
+    CLOCK_DisableClock(kCLOCK_Lpspi4);
+    /* Set LPSPI_PODF. */
+    CLOCK_SetDiv(kCLOCK_LpspiDiv, 4);
+    /* Set Lpspi clock source. */
+    CLOCK_SetMux(kCLOCK_LpspiMux, 2);
+    /* Disable TRACE clock gate. */
+    CLOCK_DisableClock(kCLOCK_Trace);
+    /* Set TRACE_PODF. */
+    CLOCK_SetDiv(kCLOCK_TraceDiv, 2);
+    /* Set Trace clock source. */
+    CLOCK_SetMux(kCLOCK_TraceMux, 2);
+    /* Disable SAI1 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Sai1);
+    /* Set SAI1_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Sai1PreDiv, 3);
+    /* Set SAI1_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Sai1Div, 1);
+    /* Set Sai1 clock source. */
+    CLOCK_SetMux(kCLOCK_Sai1Mux, 0);
+    /* Disable SAI2 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Sai2);
+    /* Set SAI2_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Sai2PreDiv, 3);
+    /* Set SAI2_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Sai2Div, 1);
+    /* Set Sai2 clock source. */
+    CLOCK_SetMux(kCLOCK_Sai2Mux, 0);
+    /* Disable SAI3 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Sai3);
+    /* Set SAI3_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Sai3PreDiv, 3);
+    /* Set SAI3_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Sai3Div, 1);
+    /* Set Sai3 clock source. */
+    CLOCK_SetMux(kCLOCK_Sai3Mux, 0);
+    /* Disable Lpi2c clock gate. */
+    CLOCK_DisableClock(kCLOCK_Lpi2c1);
+    CLOCK_DisableClock(kCLOCK_Lpi2c2);
+    CLOCK_DisableClock(kCLOCK_Lpi2c3);
+    /* Set LPI2C_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Lpi2cDiv, 0);
+    /* Set Lpi2c clock source. */
+    CLOCK_SetMux(kCLOCK_Lpi2cMux, 0);
+    /* Disable CAN clock gate. */
+    CLOCK_DisableClock(kCLOCK_Can1);
+    CLOCK_DisableClock(kCLOCK_Can2);
+    CLOCK_DisableClock(kCLOCK_Can1S);
+    CLOCK_DisableClock(kCLOCK_Can2S);
+    /* Set CAN_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_CanDiv, 1);
+    /* Set Can clock source. */
+    CLOCK_SetMux(kCLOCK_CanMux, 2);
+    /* Disable UART clock gate. */
+    CLOCK_DisableClock(kCLOCK_Lpuart1);
+    CLOCK_DisableClock(kCLOCK_Lpuart2);
+    CLOCK_DisableClock(kCLOCK_Lpuart3);
+    CLOCK_DisableClock(kCLOCK_Lpuart4);
+    CLOCK_DisableClock(kCLOCK_Lpuart5);
+    CLOCK_DisableClock(kCLOCK_Lpuart6);
+    CLOCK_DisableClock(kCLOCK_Lpuart7);
+    CLOCK_DisableClock(kCLOCK_Lpuart8);
+    /* Set UART_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_UartDiv, 0);
+    /* Set Uart clock source. */
+    CLOCK_SetMux(kCLOCK_UartMux, 0);
+    /* Disable SPDIF clock gate. */
+    CLOCK_DisableClock(kCLOCK_Spdif);
+    /* Set SPDIF0_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Spdif0PreDiv, 1);
+    /* Set SPDIF0_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Spdif0Div, 7);
+    /* Set Spdif clock source. */
+    CLOCK_SetMux(kCLOCK_SpdifMux, 3);
+    /* Disable Flexio1 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Flexio1);
+    /* Set FLEXIO1_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Flexio1PreDiv, 1);
+    /* Set FLEXIO1_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Flexio1Div, 7);
+    /* Set Flexio1 clock source. */
+    CLOCK_SetMux(kCLOCK_Flexio1Mux, 3);
+    /* Set Pll3 sw clock source. */
+    CLOCK_SetMux(kCLOCK_Pll3SwMux, 0);
+    /* In SDK projects, SDRAM (configured by SEMC) will be initialized in either debug script or dcd.
+     * With this macro SKIP_SYSCLK_INIT, system pll (selected to be SEMC source clock in SDK projects) will be left
+     * unchanged. Note: If another clock source is selected for SEMC, user may want to avoid changing that clock as
+     * well.*/
+    #ifndef SKIP_SYSCLK_INIT
+    /* Init System PLL. */
+    CLOCK_InitSysPll(&sysPllConfig_BOARD_BootClockRUN);
+    /* Init System pfd0. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd0, 27);
+    /* Init System pfd1. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd1, 16);
+    /* Init System pfd2. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd2, 18);
+    /* Init System pfd3. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd3, 18);
+    #endif
+    /* In SDK projects, external flash (configured by FLEXSPI) will be initialized by dcd.
+     * With this macro XIP_EXTERNAL_FLASH, usb1 pll (selected to be FLEXSPI clock source in SDK projects) will be left
+     * unchanged. Note: If another clock source is selected for FLEXSPI, user may want to avoid changing that clock as
+     * well.*/
+    #if !(defined(XIP_EXTERNAL_FLASH) && (XIP_EXTERNAL_FLASH == 1))
+    /* Init Usb1 PLL. */
+    CLOCK_InitUsb1Pll(&usb1PllConfig_BOARD_BootClockRUN);
+    /* Init Usb1 pfd0. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd0, 22);
+    /* Init Usb1 pfd1. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd1, 16);
+    /* Init Usb1 pfd2. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd2, 17);
+    /* Init Usb1 pfd3. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd3, 18);
+    /* Disable Usb1 PLL output for USBPHY1. */
+    CCM_ANALOG->PLL_USB1 &= ~CCM_ANALOG_PLL_USB1_EN_USB_CLKS_MASK;
+    #endif
+    /* DeInit Audio PLL. */
+    CLOCK_DeinitAudioPll();
+    /* Bypass Audio PLL. */
+    CLOCK_SetPllBypass(CCM_ANALOG, kCLOCK_PllAudio, 1);
+    /* Set divider for Audio PLL. */
+    CCM_ANALOG->MISC2 &= ~CCM_ANALOG_MISC2_AUDIO_DIV_LSB_MASK;
+    CCM_ANALOG->MISC2 &= ~CCM_ANALOG_MISC2_AUDIO_DIV_MSB_MASK;
+    /* Enable Audio PLL output. */
+    CCM_ANALOG->PLL_AUDIO |= CCM_ANALOG_PLL_AUDIO_ENABLE_MASK;
+    /* Init Enet PLL. */
+    CLOCK_InitEnetPll(&enetPllConfig_BOARD_BootClockRUN);
+    /* Set preperiph clock source. */
+    CLOCK_SetMux(kCLOCK_PrePeriphMux, 3);
+    /* Set periph clock source. */
+    CLOCK_SetMux(kCLOCK_PeriphMux, 0);
+    /* Set periph clock2 clock source. */
+    CLOCK_SetMux(kCLOCK_PeriphClk2Mux, 0);
+    /* Set per clock source. */
+    CLOCK_SetMux(kCLOCK_PerclkMux, 0);
+    /* Set clock out1 divider. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO1_DIV_MASK)) | CCM_CCOSR_CLKO1_DIV(0);
+    /* Set clock out1 source. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO1_SEL_MASK)) | CCM_CCOSR_CLKO1_SEL(1);
+    /* Set clock out2 divider. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO2_DIV_MASK)) | CCM_CCOSR_CLKO2_DIV(0);
+    /* Set clock out2 source. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO2_SEL_MASK)) | CCM_CCOSR_CLKO2_SEL(3);
+    /* Set clock out1 drives clock out1. */
+    CCM->CCOSR &= ~CCM_CCOSR_CLK_OUT_SEL_MASK;
+    /* Disable clock out1. */
+    CCM->CCOSR &= ~CCM_CCOSR_CLKO1_EN_MASK;
+    /* Disable clock out2. */
+    CCM->CCOSR &= ~CCM_CCOSR_CLKO2_EN_MASK;
+    /* Set SAI1 MCLK1 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI1MClk1Sel, 0);
+    /* Set SAI1 MCLK2 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI1MClk2Sel, 0);
+    /* Set SAI1 MCLK3 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI1MClk3Sel, 0);
+    /* Set SAI2 MCLK3 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI2MClk3Sel, 0);
+    /* Set SAI3 MCLK3 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI3MClk3Sel, 0);
+    /* Set MQS configuration. */
+    IOMUXC_MQSConfig(IOMUXC_GPR, kIOMUXC_MqsPwmOverSampleRate32, 0);
+    /* Set ENET Tx clock source. */
+    IOMUXC_EnableMode(IOMUXC_GPR, kIOMUXC_GPR_ENET1RefClkMode, false);
+    /* Set GPT1 High frequency reference clock source. */
+    IOMUXC_GPR->GPR5 &= ~IOMUXC_GPR_GPR5_VREF_1M_CLK_GPT1_MASK;
+    /* Set GPT2 High frequency reference clock source. */
+    IOMUXC_GPR->GPR5 &= ~IOMUXC_GPR_GPR5_VREF_1M_CLK_GPT2_MASK;
+    /* Set SystemCoreClock variable. */
+    SystemCoreClock = BOARD_BOOTCLOCKRUN_CORE_CLOCK;
+}
diff --git a/ports/mimxrt/boards/MIMXRT1020_EVK/clock_config.h b/ports/mimxrt/boards/MIMXRT1021_clock_config.h
similarity index 100%
rename from ports/mimxrt/boards/MIMXRT1020_EVK/clock_config.h
rename to ports/mimxrt/boards/MIMXRT1021_clock_config.h
diff --git a/ports/mimxrt/boards/MIMXRT1052_clock_config.c b/ports/mimxrt/boards/MIMXRT1052_clock_config.c
new file mode 100644
index 0000000000..9349281297
--- /dev/null
+++ b/ports/mimxrt/boards/MIMXRT1052_clock_config.c
@@ -0,0 +1,468 @@
+/*
+ * Copyright 2017-2019 NXP
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * How to setup clock using clock driver functions:
+ *
+ * 1. Call CLOCK_InitXXXPLL() to configure corresponding PLL clock.
+ *
+ * 2. Call CLOCK_InitXXXpfd() to configure corresponding PLL pfd clock.
+ *
+ * 3. Call CLOCK_SetMux() to configure corresponding clock source for target clock out.
+ *
+ * 4. Call CLOCK_SetDiv() to configure corresponding clock divider for target clock out.
+ *
+ * 5. Call CLOCK_SetXtalFreq() to set XTAL frequency based on board settings.
+ *
+ */
+
+/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
+!!GlobalInfo
+product: Clocks v5.0
+processor: MIMXRT1052xxxxB
+package_id: MIMXRT1052DVL6B
+mcu_data: ksdk2_0
+processor_version: 0.0.0
+board: IMXRT1050-EVKB
+ * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
+
+#include CLOCK_CONFIG_H
+#include "fsl_iomuxc.h"
+
+/*******************************************************************************
+ * Definitions
+ ******************************************************************************/
+
+/*******************************************************************************
+ * Variables
+ ******************************************************************************/
+/* System clock frequency. */
+extern uint32_t SystemCoreClock;
+
+/*******************************************************************************
+ ************************ BOARD_InitBootClocks function ************************
+ ******************************************************************************/
+void BOARD_InitBootClocks(void) {
+    BOARD_BootClockRUN();
+}
+
+/*******************************************************************************
+ ********************** Configuration BOARD_BootClockRUN ***********************
+ ******************************************************************************/
+/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
+!!Configuration
+name: BOARD_BootClockRUN
+called_from_default_init: true
+outputs:
+- {id: AHB_CLK_ROOT.outFreq, value: 600 MHz}
+- {id: CAN_CLK_ROOT.outFreq, value: 40 MHz}
+- {id: CKIL_SYNC_CLK_ROOT.outFreq, value: 32.768 kHz}
+- {id: CLK_1M.outFreq, value: 1 MHz}
+- {id: CLK_24M.outFreq, value: 24 MHz}
+- {id: CSI_CLK_ROOT.outFreq, value: 12 MHz}
+- {id: ENET1_TX_CLK.outFreq, value: 2.4 MHz}
+- {id: ENET_125M_CLK.outFreq, value: 2.4 MHz}
+- {id: ENET_25M_REF_CLK.outFreq, value: 1.2 MHz}
+- {id: FLEXIO1_CLK_ROOT.outFreq, value: 30 MHz}
+- {id: FLEXIO2_CLK_ROOT.outFreq, value: 30 MHz}
+- {id: FLEXSPI_CLK_ROOT.outFreq, value: 160 MHz}
+- {id: GPT1_ipg_clk_highfreq.outFreq, value: 75 MHz}
+- {id: GPT2_ipg_clk_highfreq.outFreq, value: 75 MHz}
+- {id: IPG_CLK_ROOT.outFreq, value: 150 MHz}
+- {id: LCDIF_CLK_ROOT.outFreq, value: 67.5 MHz}
+- {id: LPI2C_CLK_ROOT.outFreq, value: 60 MHz}
+- {id: LPSPI_CLK_ROOT.outFreq, value: 105.6 MHz}
+- {id: LVDS1_CLK.outFreq, value: 1.2 GHz}
+- {id: MQS_MCLK.outFreq, value: 1080/17 MHz}
+- {id: PERCLK_CLK_ROOT.outFreq, value: 75 MHz}
+- {id: PLL7_MAIN_CLK.outFreq, value: 24 MHz}
+- {id: SAI1_CLK_ROOT.outFreq, value: 1080/17 MHz}
+- {id: SAI1_MCLK1.outFreq, value: 1080/17 MHz}
+- {id: SAI1_MCLK2.outFreq, value: 1080/17 MHz}
+- {id: SAI1_MCLK3.outFreq, value: 30 MHz}
+- {id: SAI2_CLK_ROOT.outFreq, value: 1080/17 MHz}
+- {id: SAI2_MCLK1.outFreq, value: 1080/17 MHz}
+- {id: SAI2_MCLK3.outFreq, value: 30 MHz}
+- {id: SAI3_CLK_ROOT.outFreq, value: 1080/17 MHz}
+- {id: SAI3_MCLK1.outFreq, value: 1080/17 MHz}
+- {id: SAI3_MCLK3.outFreq, value: 30 MHz}
+- {id: SEMC_CLK_ROOT.outFreq, value: 75 MHz}
+- {id: SPDIF0_CLK_ROOT.outFreq, value: 30 MHz}
+- {id: TRACE_CLK_ROOT.outFreq, value: 352/3 MHz}
+- {id: UART_CLK_ROOT.outFreq, value: 80 MHz}
+- {id: USDHC1_CLK_ROOT.outFreq, value: 198 MHz}
+- {id: USDHC2_CLK_ROOT.outFreq, value: 198 MHz}
+settings:
+- {id: CCM.AHB_PODF.scale, value: '1', locked: true}
+- {id: CCM.ARM_PODF.scale, value: '2', locked: true}
+- {id: CCM.FLEXSPI_PODF.scale, value: '3', locked: true}
+- {id: CCM.FLEXSPI_SEL.sel, value: CCM.PLL3_SW_CLK_SEL}
+- {id: CCM.LPSPI_PODF.scale, value: '5', locked: true}
+- {id: CCM.PERCLK_PODF.scale, value: '2', locked: true}
+- {id: CCM.SEMC_PODF.scale, value: '8'}
+- {id: CCM.TRACE_PODF.scale, value: '3', locked: true}
+- {id: CCM_ANALOG.PLL1_BYPASS.sel, value: CCM_ANALOG.PLL1}
+- {id: CCM_ANALOG.PLL1_PREDIV.scale, value: '1', locked: true}
+- {id: CCM_ANALOG.PLL1_VDIV.scale, value: '50', locked: true}
+- {id: CCM_ANALOG.PLL2.denom, value: '1', locked: true}
+- {id: CCM_ANALOG.PLL2.num, value: '0', locked: true}
+- {id: CCM_ANALOG.PLL2_BYPASS.sel, value: CCM_ANALOG.PLL2_OUT_CLK}
+- {id: CCM_ANALOG.PLL2_PFD0_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD0}
+- {id: CCM_ANALOG.PLL2_PFD1_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD1}
+- {id: CCM_ANALOG.PLL2_PFD2_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD2}
+- {id: CCM_ANALOG.PLL2_PFD3_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD3}
+- {id: CCM_ANALOG.PLL3_BYPASS.sel, value: CCM_ANALOG.PLL3}
+- {id: CCM_ANALOG.PLL3_PFD0_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD0}
+- {id: CCM_ANALOG.PLL3_PFD0_DIV.scale, value: '33', locked: true}
+- {id: CCM_ANALOG.PLL3_PFD0_MUL.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL3_PFD1_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD1}
+- {id: CCM_ANALOG.PLL3_PFD2_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD2}
+- {id: CCM_ANALOG.PLL3_PFD3_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD3}
+- {id: CCM_ANALOG.PLL4.denom, value: '50'}
+- {id: CCM_ANALOG.PLL4.div, value: '47'}
+- {id: CCM_ANALOG.PLL5.denom, value: '1'}
+- {id: CCM_ANALOG.PLL5.div, value: '40'}
+- {id: CCM_ANALOG.PLL5.num, value: '0'}
+- {id: CCM_ANALOG_PLL_ENET_POWERDOWN_CFG, value: 'Yes'}
+- {id: CCM_ANALOG_PLL_USB1_POWER_CFG, value: 'Yes'}
+sources:
+- {id: XTALOSC24M.OSC.outFreq, value: 24 MHz, enabled: true}
+- {id: XTALOSC24M.RTC_OSC.outFreq, value: 32.768 kHz, enabled: true}
+ * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
+
+/*******************************************************************************
+ * Variables for BOARD_BootClockRUN configuration
+ ******************************************************************************/
+const clock_arm_pll_config_t armPllConfig_BOARD_BootClockRUN = {
+    .loopDivider = 100, /* PLL loop divider, Fout = Fin * 50 */
+    .src = 0,           /* Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N */
+};
+const clock_sys_pll_config_t sysPllConfig_BOARD_BootClockRUN = {
+    .loopDivider = 1, /* PLL loop divider, Fout = Fin * ( 20 + loopDivider*2 + numerator / denominator ) */
+    .numerator = 0,   /* 30 bit numerator of fractional loop divider */
+    .denominator = 1, /* 30 bit denominator of fractional loop divider */
+    .src = 0,         /* Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N */
+};
+const clock_usb_pll_config_t usb1PllConfig_BOARD_BootClockRUN = {
+    .loopDivider = 0, /* PLL loop divider, Fout = Fin * 20 */
+    .src = 0,         /* Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N */
+};
+/*******************************************************************************
+ * Code for BOARD_BootClockRUN configuration
+ ******************************************************************************/
+void BOARD_BootClockRUN(void) {
+    /* Init RTC OSC clock frequency. */
+    CLOCK_SetRtcXtalFreq(32768U);
+    /* Enable 1MHz clock output. */
+    XTALOSC24M->OSC_CONFIG2 |= XTALOSC24M_OSC_CONFIG2_ENABLE_1M_MASK;
+    /* Use free 1MHz clock output. */
+    XTALOSC24M->OSC_CONFIG2 &= ~XTALOSC24M_OSC_CONFIG2_MUX_1M_MASK;
+    /* Set XTAL 24MHz clock frequency. */
+    CLOCK_SetXtalFreq(24000000U);
+    /* Enable XTAL 24MHz clock source. */
+    CLOCK_InitExternalClk(0);
+    /* Enable internal RC. */
+    CLOCK_InitRcOsc24M();
+    /* Switch clock source to external OSC. */
+    CLOCK_SwitchOsc(kCLOCK_XtalOsc);
+    /* Set Oscillator ready counter value. */
+    CCM->CCR = (CCM->CCR & (~CCM_CCR_OSCNT_MASK)) | CCM_CCR_OSCNT(127);
+    /* Setting PeriphClk2Mux and PeriphMux to provide stable clock before PLLs are initialed */
+    CLOCK_SetMux(kCLOCK_PeriphClk2Mux, 1); /* Set PERIPH_CLK2 MUX to OSC */
+    CLOCK_SetMux(kCLOCK_PeriphMux, 1);     /* Set PERIPH_CLK MUX to PERIPH_CLK2 */
+    /* Setting the VDD_SOC to 1.275V. It is necessary to config AHB to 600Mhz. */
+    DCDC->REG3 = (DCDC->REG3 & (~DCDC_REG3_TRG_MASK)) | DCDC_REG3_TRG(0x13);
+    /* Waiting for DCDC_STS_DC_OK bit is asserted */
+    while (DCDC_REG0_STS_DC_OK_MASK != (DCDC_REG0_STS_DC_OK_MASK & DCDC->REG0)) {
+    }
+    /* Set AHB_PODF. */
+    CLOCK_SetDiv(kCLOCK_AhbDiv, 0);
+    /* Disable IPG clock gate. */
+    CLOCK_DisableClock(kCLOCK_Adc1);
+    CLOCK_DisableClock(kCLOCK_Adc2);
+    CLOCK_DisableClock(kCLOCK_Xbar1);
+    CLOCK_DisableClock(kCLOCK_Xbar2);
+    CLOCK_DisableClock(kCLOCK_Xbar3);
+    /* Set IPG_PODF. */
+    CLOCK_SetDiv(kCLOCK_IpgDiv, 3);
+    /* Set ARM_PODF. */
+    CLOCK_SetDiv(kCLOCK_ArmDiv, 1);
+    /* Set PERIPH_CLK2_PODF. */
+    CLOCK_SetDiv(kCLOCK_PeriphClk2Div, 0);
+    /* Disable PERCLK clock gate. */
+    CLOCK_DisableClock(kCLOCK_Gpt1);
+    CLOCK_DisableClock(kCLOCK_Gpt1S);
+    CLOCK_DisableClock(kCLOCK_Gpt2);
+    CLOCK_DisableClock(kCLOCK_Gpt2S);
+    CLOCK_DisableClock(kCLOCK_Pit);
+    /* Set PERCLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_PerclkDiv, 1);
+    /* Disable USDHC1 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Usdhc1);
+    /* Set USDHC1_PODF. */
+    CLOCK_SetDiv(kCLOCK_Usdhc1Div, 1);
+    /* Set Usdhc1 clock source. */
+    CLOCK_SetMux(kCLOCK_Usdhc1Mux, 0);
+    /* Disable USDHC2 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Usdhc2);
+    /* Set USDHC2_PODF. */
+    CLOCK_SetDiv(kCLOCK_Usdhc2Div, 1);
+    /* Set Usdhc2 clock source. */
+    CLOCK_SetMux(kCLOCK_Usdhc2Mux, 0);
+/* In SDK projects, SDRAM (configured by SEMC) will be initialized in either debug script or dcd.
+ * With this macro SKIP_SYSCLK_INIT, system pll (selected to be SEMC source clock in SDK projects) will be left
+ * unchanged.
+ * Note: If another clock source is selected for SEMC, user may want to avoid changing that clock as well.*/
+    #ifndef SKIP_SYSCLK_INIT
+    /* Disable Semc clock gate. */
+    CLOCK_DisableClock(kCLOCK_Semc);
+    /* Set SEMC_PODF. */
+    CLOCK_SetDiv(kCLOCK_SemcDiv, 7);
+    /* Set Semc alt clock source. */
+    CLOCK_SetMux(kCLOCK_SemcAltMux, 0);
+    /* Set Semc clock source. */
+    CLOCK_SetMux(kCLOCK_SemcMux, 0);
+    #endif
+/* In SDK projects, external flash (configured by FLEXSPI) will be initialized by dcd.
+ * With this macro XIP_EXTERNAL_FLASH, usb1 pll (selected to be FLEXSPI clock source in SDK projects) will be left
+ * unchanged.
+ * Note: If another clock source is selected for FLEXSPI, user may want to avoid changing that clock as well.*/
+    #if !(defined(XIP_EXTERNAL_FLASH) && (XIP_EXTERNAL_FLASH == 1))
+    /* Disable Flexspi clock gate. */
+    CLOCK_DisableClock(kCLOCK_FlexSpi);
+    /* Set FLEXSPI_PODF. */
+    CLOCK_SetDiv(kCLOCK_FlexspiDiv, 2);
+    /* Set Flexspi clock source. */
+    CLOCK_SetMux(kCLOCK_FlexspiMux, 1);
+    #endif
+    /* Disable CSI clock gate. */
+    CLOCK_DisableClock(kCLOCK_Csi);
+    /* Set CSI_PODF. */
+    CLOCK_SetDiv(kCLOCK_CsiDiv, 1);
+    /* Set Csi clock source. */
+    CLOCK_SetMux(kCLOCK_CsiMux, 0);
+    /* Disable LPSPI clock gate. */
+    CLOCK_DisableClock(kCLOCK_Lpspi1);
+    CLOCK_DisableClock(kCLOCK_Lpspi2);
+    CLOCK_DisableClock(kCLOCK_Lpspi3);
+    CLOCK_DisableClock(kCLOCK_Lpspi4);
+    /* Set LPSPI_PODF. */
+    CLOCK_SetDiv(kCLOCK_LpspiDiv, 4);
+    /* Set Lpspi clock source. */
+    CLOCK_SetMux(kCLOCK_LpspiMux, 2);
+    /* Disable TRACE clock gate. */
+    CLOCK_DisableClock(kCLOCK_Trace);
+    /* Set TRACE_PODF. */
+    CLOCK_SetDiv(kCLOCK_TraceDiv, 2);
+    /* Set Trace clock source. */
+    CLOCK_SetMux(kCLOCK_TraceMux, 2);
+    /* Disable SAI1 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Sai1);
+    /* Set SAI1_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Sai1PreDiv, 3);
+    /* Set SAI1_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Sai1Div, 1);
+    /* Set Sai1 clock source. */
+    CLOCK_SetMux(kCLOCK_Sai1Mux, 0);
+    /* Disable SAI2 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Sai2);
+    /* Set SAI2_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Sai2PreDiv, 3);
+    /* Set SAI2_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Sai2Div, 1);
+    /* Set Sai2 clock source. */
+    CLOCK_SetMux(kCLOCK_Sai2Mux, 0);
+    /* Disable SAI3 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Sai3);
+    /* Set SAI3_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Sai3PreDiv, 3);
+    /* Set SAI3_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Sai3Div, 1);
+    /* Set Sai3 clock source. */
+    CLOCK_SetMux(kCLOCK_Sai3Mux, 0);
+    /* Disable Lpi2c clock gate. */
+    CLOCK_DisableClock(kCLOCK_Lpi2c1);
+    CLOCK_DisableClock(kCLOCK_Lpi2c2);
+    CLOCK_DisableClock(kCLOCK_Lpi2c3);
+    /* Set LPI2C_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Lpi2cDiv, 0);
+    /* Set Lpi2c clock source. */
+    CLOCK_SetMux(kCLOCK_Lpi2cMux, 0);
+    /* Disable CAN clock gate. */
+    CLOCK_DisableClock(kCLOCK_Can1);
+    CLOCK_DisableClock(kCLOCK_Can2);
+    CLOCK_DisableClock(kCLOCK_Can1S);
+    CLOCK_DisableClock(kCLOCK_Can2S);
+    /* Set CAN_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_CanDiv, 1);
+    /* Set Can clock source. */
+    CLOCK_SetMux(kCLOCK_CanMux, 2);
+    /* Disable UART clock gate. */
+    CLOCK_DisableClock(kCLOCK_Lpuart1);
+    CLOCK_DisableClock(kCLOCK_Lpuart2);
+    CLOCK_DisableClock(kCLOCK_Lpuart3);
+    CLOCK_DisableClock(kCLOCK_Lpuart4);
+    CLOCK_DisableClock(kCLOCK_Lpuart5);
+    CLOCK_DisableClock(kCLOCK_Lpuart6);
+    CLOCK_DisableClock(kCLOCK_Lpuart7);
+    CLOCK_DisableClock(kCLOCK_Lpuart8);
+    /* Set UART_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_UartDiv, 0);
+    /* Set Uart clock source. */
+    CLOCK_SetMux(kCLOCK_UartMux, 0);
+    /* Disable LCDIF clock gate. */
+    CLOCK_DisableClock(kCLOCK_LcdPixel);
+    /* Set LCDIF_PRED. */
+    CLOCK_SetDiv(kCLOCK_LcdifPreDiv, 1);
+    /* Set LCDIF_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_LcdifDiv, 3);
+    /* Set Lcdif pre clock source. */
+    CLOCK_SetMux(kCLOCK_LcdifPreMux, 5);
+    /* Disable SPDIF clock gate. */
+    CLOCK_DisableClock(kCLOCK_Spdif);
+    /* Set SPDIF0_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Spdif0PreDiv, 1);
+    /* Set SPDIF0_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Spdif0Div, 7);
+    /* Set Spdif clock source. */
+    CLOCK_SetMux(kCLOCK_SpdifMux, 3);
+    /* Disable Flexio1 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Flexio1);
+    /* Set FLEXIO1_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Flexio1PreDiv, 1);
+    /* Set FLEXIO1_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Flexio1Div, 7);
+    /* Set Flexio1 clock source. */
+    CLOCK_SetMux(kCLOCK_Flexio1Mux, 3);
+    /* Disable Flexio2 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Flexio2);
+    /* Set FLEXIO2_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Flexio2PreDiv, 1);
+    /* Set FLEXIO2_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Flexio2Div, 7);
+    /* Set Flexio2 clock source. */
+    CLOCK_SetMux(kCLOCK_Flexio2Mux, 3);
+    /* Set Pll3 sw clock source. */
+    CLOCK_SetMux(kCLOCK_Pll3SwMux, 0);
+    /* Init ARM PLL. */
+    CLOCK_InitArmPll(&armPllConfig_BOARD_BootClockRUN);
+    /* In SDK projects, SDRAM (configured by SEMC) will be initialized in either debug script or dcd.
+     * With this macro SKIP_SYSCLK_INIT, system pll (selected to be SEMC source clock in SDK projects) will be left
+     * unchanged. Note: If another clock source is selected for SEMC, user may want to avoid changing that clock as
+     * well.*/
+    #ifndef SKIP_SYSCLK_INIT
+    /* Init System PLL. */
+    CLOCK_InitSysPll(&sysPllConfig_BOARD_BootClockRUN);
+    /* Init System pfd0. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd0, 27);
+    /* Init System pfd1. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd1, 16);
+    /* Init System pfd2. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd2, 24);
+    /* Init System pfd3. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd3, 16);
+    /* Disable pfd offset. */
+    CCM_ANALOG->PLL_SYS &= ~CCM_ANALOG_PLL_SYS_PFD_OFFSET_EN_MASK;
+    #endif
+    /* In SDK projects, external flash (configured by FLEXSPI) will be initialized by dcd.
+     * With this macro XIP_EXTERNAL_FLASH, usb1 pll (selected to be FLEXSPI clock source in SDK projects) will be left
+     * unchanged. Note: If another clock source is selected for FLEXSPI, user may want to avoid changing that clock as
+     * well.*/
+    #if !(defined(XIP_EXTERNAL_FLASH) && (XIP_EXTERNAL_FLASH == 1))
+    /* Init Usb1 PLL. */
+    CLOCK_InitUsb1Pll(&usb1PllConfig_BOARD_BootClockRUN);
+    /* Init Usb1 pfd0. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd0, 33);
+    /* Init Usb1 pfd1. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd1, 16);
+    /* Init Usb1 pfd2. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd2, 17);
+    /* Init Usb1 pfd3. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd3, 19);
+    /* Disable Usb1 PLL output for USBPHY1. */
+    CCM_ANALOG->PLL_USB1 &= ~CCM_ANALOG_PLL_USB1_EN_USB_CLKS_MASK;
+    #endif
+    /* DeInit Audio PLL. */
+    CLOCK_DeinitAudioPll();
+    /* Bypass Audio PLL. */
+    CLOCK_SetPllBypass(CCM_ANALOG, kCLOCK_PllAudio, 1);
+    /* Set divider for Audio PLL. */
+    CCM_ANALOG->MISC2 &= ~CCM_ANALOG_MISC2_AUDIO_DIV_LSB_MASK;
+    CCM_ANALOG->MISC2 &= ~CCM_ANALOG_MISC2_AUDIO_DIV_MSB_MASK;
+    /* Enable Audio PLL output. */
+    CCM_ANALOG->PLL_AUDIO |= CCM_ANALOG_PLL_AUDIO_ENABLE_MASK;
+    /* DeInit Video PLL. */
+    CLOCK_DeinitVideoPll();
+    /* Bypass Video PLL. */
+    CCM_ANALOG->PLL_VIDEO |= CCM_ANALOG_PLL_VIDEO_BYPASS_MASK;
+    /* Set divider for Video PLL. */
+    CCM_ANALOG->MISC2 = (CCM_ANALOG->MISC2 & (~CCM_ANALOG_MISC2_VIDEO_DIV_MASK)) | CCM_ANALOG_MISC2_VIDEO_DIV(0);
+    /* Enable Video PLL output. */
+    CCM_ANALOG->PLL_VIDEO |= CCM_ANALOG_PLL_VIDEO_ENABLE_MASK;
+    /* DeInit Enet PLL. */
+    CLOCK_DeinitEnetPll();
+    /* Bypass Enet PLL. */
+    CLOCK_SetPllBypass(CCM_ANALOG, kCLOCK_PllEnet, 1);
+    /* Set Enet output divider. */
+    CCM_ANALOG->PLL_ENET =
+        (CCM_ANALOG->PLL_ENET & (~CCM_ANALOG_PLL_ENET_DIV_SELECT_MASK)) | CCM_ANALOG_PLL_ENET_DIV_SELECT(1);
+    /* Enable Enet output. */
+    CCM_ANALOG->PLL_ENET |= CCM_ANALOG_PLL_ENET_ENABLE_MASK;
+    /* Enable Enet25M output. */
+    CCM_ANALOG->PLL_ENET |= CCM_ANALOG_PLL_ENET_ENET_25M_REF_EN_MASK;
+    /* DeInit Usb2 PLL. */
+    CLOCK_DeinitUsb2Pll();
+    /* Bypass Usb2 PLL. */
+    CLOCK_SetPllBypass(CCM_ANALOG, kCLOCK_PllUsb2, 1);
+    /* Enable Usb2 PLL output. */
+    CCM_ANALOG->PLL_USB2 |= CCM_ANALOG_PLL_USB2_ENABLE_MASK;
+    /* Set preperiph clock source. */
+    CLOCK_SetMux(kCLOCK_PrePeriphMux, 3);
+    /* Set periph clock source. */
+    CLOCK_SetMux(kCLOCK_PeriphMux, 0);
+    /* Set periph clock2 clock source. */
+    CLOCK_SetMux(kCLOCK_PeriphClk2Mux, 0);
+    /* Set per clock source. */
+    CLOCK_SetMux(kCLOCK_PerclkMux, 0);
+    /* Set lvds1 clock source. */
+    CCM_ANALOG->MISC1 =
+        (CCM_ANALOG->MISC1 & (~CCM_ANALOG_MISC1_LVDS1_CLK_SEL_MASK)) | CCM_ANALOG_MISC1_LVDS1_CLK_SEL(0);
+    /* Set clock out1 divider. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO1_DIV_MASK)) | CCM_CCOSR_CLKO1_DIV(0);
+    /* Set clock out1 source. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO1_SEL_MASK)) | CCM_CCOSR_CLKO1_SEL(1);
+    /* Set clock out2 divider. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO2_DIV_MASK)) | CCM_CCOSR_CLKO2_DIV(0);
+    /* Set clock out2 source. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO2_SEL_MASK)) | CCM_CCOSR_CLKO2_SEL(18);
+    /* Set clock out1 drives clock out1. */
+    CCM->CCOSR &= ~CCM_CCOSR_CLK_OUT_SEL_MASK;
+    /* Disable clock out1. */
+    CCM->CCOSR &= ~CCM_CCOSR_CLKO1_EN_MASK;
+    /* Disable clock out2. */
+    CCM->CCOSR &= ~CCM_CCOSR_CLKO2_EN_MASK;
+    /* Set SAI1 MCLK1 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI1MClk1Sel, 0);
+    /* Set SAI1 MCLK2 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI1MClk2Sel, 0);
+    /* Set SAI1 MCLK3 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI1MClk3Sel, 0);
+    /* Set SAI2 MCLK3 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI2MClk3Sel, 0);
+    /* Set SAI3 MCLK3 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI3MClk3Sel, 0);
+    /* Set MQS configuration. */
+    IOMUXC_MQSConfig(IOMUXC_GPR, kIOMUXC_MqsPwmOverSampleRate32, 0);
+    /* Set ENET Tx clock source. */
+    IOMUXC_EnableMode(IOMUXC_GPR, kIOMUXC_GPR_ENET1RefClkMode, false);
+    /* Set GPT1 High frequency reference clock source. */
+    IOMUXC_GPR->GPR5 &= ~IOMUXC_GPR_GPR5_VREF_1M_CLK_GPT1_MASK;
+    /* Set GPT2 High frequency reference clock source. */
+    IOMUXC_GPR->GPR5 &= ~IOMUXC_GPR_GPR5_VREF_1M_CLK_GPT2_MASK;
+    /* Set SystemCoreClock variable. */
+    SystemCoreClock = BOARD_BOOTCLOCKRUN_CORE_CLOCK;
+}
diff --git a/ports/mimxrt/boards/MIMXRT1050_EVK/clock_config.h b/ports/mimxrt/boards/MIMXRT1052_clock_config.h
similarity index 100%
rename from ports/mimxrt/boards/MIMXRT1050_EVK/clock_config.h
rename to ports/mimxrt/boards/MIMXRT1052_clock_config.h
diff --git a/ports/mimxrt/boards/MIMXRT1062_clock_config.c b/ports/mimxrt/boards/MIMXRT1062_clock_config.c
new file mode 100644
index 0000000000..05474167bd
--- /dev/null
+++ b/ports/mimxrt/boards/MIMXRT1062_clock_config.c
@@ -0,0 +1,490 @@
+/*
+ * Copyright 2018-2019 NXP
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * How to setup clock using clock driver functions:
+ *
+ * 1. Call CLOCK_InitXXXPLL() to configure corresponding PLL clock.
+ *
+ * 2. Call CLOCK_InitXXXpfd() to configure corresponding PLL pfd clock.
+ *
+ * 3. Call CLOCK_SetMux() to configure corresponding clock source for target clock out.
+ *
+ * 4. Call CLOCK_SetDiv() to configure corresponding clock divider for target clock out.
+ *
+ * 5. Call CLOCK_SetXtalFreq() to set XTAL frequency based on board settings.
+ *
+ */
+
+/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
+!!GlobalInfo
+product: Clocks v5.0
+processor: MIMXRT1062xxxxA
+package_id: MIMXRT1062DVL6A
+mcu_data: ksdk2_0
+processor_version: 0.0.0
+board: MIMXRT1060-EVK
+ * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
+
+#include CLOCK_CONFIG_H
+#include "fsl_iomuxc.h"
+
+/*******************************************************************************
+ * Definitions
+ ******************************************************************************/
+
+/*******************************************************************************
+ * Variables
+ ******************************************************************************/
+/* System clock frequency. */
+extern uint32_t SystemCoreClock;
+
+/*******************************************************************************
+ ************************ BOARD_InitBootClocks function ************************
+ ******************************************************************************/
+void BOARD_InitBootClocks(void) {
+    BOARD_BootClockRUN();
+}
+
+/*******************************************************************************
+ ********************** Configuration BOARD_BootClockRUN ***********************
+ ******************************************************************************/
+/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
+!!Configuration
+name: BOARD_BootClockRUN
+called_from_default_init: true
+outputs:
+- {id: AHB_CLK_ROOT.outFreq, value: 600 MHz}
+- {id: CAN_CLK_ROOT.outFreq, value: 40 MHz}
+- {id: CKIL_SYNC_CLK_ROOT.outFreq, value: 32.768 kHz}
+- {id: CLK_1M.outFreq, value: 1 MHz}
+- {id: CLK_24M.outFreq, value: 24 MHz}
+- {id: CSI_CLK_ROOT.outFreq, value: 12 MHz}
+- {id: ENET1_TX_CLK.outFreq, value: 2.4 MHz}
+- {id: ENET2_125M_CLK.outFreq, value: 1.2 MHz}
+- {id: ENET2_TX_CLK.outFreq, value: 1.2 MHz}
+- {id: ENET_125M_CLK.outFreq, value: 2.4 MHz}
+- {id: ENET_25M_REF_CLK.outFreq, value: 1.2 MHz}
+- {id: FLEXIO1_CLK_ROOT.outFreq, value: 30 MHz}
+- {id: FLEXIO2_CLK_ROOT.outFreq, value: 30 MHz}
+- {id: FLEXSPI2_CLK_ROOT.outFreq, value: 1440/11 MHz}
+- {id: FLEXSPI_CLK_ROOT.outFreq, value: 1440/11 MHz}
+- {id: GPT1_ipg_clk_highfreq.outFreq, value: 75 MHz}
+- {id: GPT2_ipg_clk_highfreq.outFreq, value: 75 MHz}
+- {id: IPG_CLK_ROOT.outFreq, value: 150 MHz}
+- {id: LCDIF_CLK_ROOT.outFreq, value: 67.5/7 MHz}
+- {id: LPI2C_CLK_ROOT.outFreq, value: 60 MHz}
+- {id: LPSPI_CLK_ROOT.outFreq, value: 105.6 MHz}
+- {id: LVDS1_CLK.outFreq, value: 1.2 GHz}
+- {id: MQS_MCLK.outFreq, value: 1080/17 MHz}
+- {id: PERCLK_CLK_ROOT.outFreq, value: 75 MHz}
+- {id: PLL7_MAIN_CLK.outFreq, value: 24 MHz}
+- {id: SAI1_CLK_ROOT.outFreq, value: 1080/17 MHz}
+- {id: SAI1_MCLK1.outFreq, value: 1080/17 MHz}
+- {id: SAI1_MCLK2.outFreq, value: 1080/17 MHz}
+- {id: SAI1_MCLK3.outFreq, value: 30 MHz}
+- {id: SAI2_CLK_ROOT.outFreq, value: 1080/17 MHz}
+- {id: SAI2_MCLK1.outFreq, value: 1080/17 MHz}
+- {id: SAI2_MCLK3.outFreq, value: 30 MHz}
+- {id: SAI3_CLK_ROOT.outFreq, value: 1080/17 MHz}
+- {id: SAI3_MCLK1.outFreq, value: 1080/17 MHz}
+- {id: SAI3_MCLK3.outFreq, value: 30 MHz}
+- {id: SEMC_CLK_ROOT.outFreq, value: 75 MHz}
+- {id: SPDIF0_CLK_ROOT.outFreq, value: 30 MHz}
+- {id: TRACE_CLK_ROOT.outFreq, value: 352/3 MHz}
+- {id: UART_CLK_ROOT.outFreq, value: 80 MHz}
+- {id: USDHC1_CLK_ROOT.outFreq, value: 198 MHz}
+- {id: USDHC2_CLK_ROOT.outFreq, value: 198 MHz}
+settings:
+- {id: CCM.AHB_PODF.scale, value: '1', locked: true}
+- {id: CCM.ARM_PODF.scale, value: '2', locked: true}
+- {id: CCM.FLEXSPI2_PODF.scale, value: '2', locked: true}
+- {id: CCM.FLEXSPI2_SEL.sel, value: CCM_ANALOG.PLL3_PFD0_CLK}
+- {id: CCM.FLEXSPI_PODF.scale, value: '2', locked: true}
+- {id: CCM.FLEXSPI_SEL.sel, value: CCM_ANALOG.PLL3_PFD0_CLK}
+- {id: CCM.LPSPI_PODF.scale, value: '5', locked: true}
+- {id: CCM.PERCLK_PODF.scale, value: '2', locked: true}
+- {id: CCM.SEMC_PODF.scale, value: '8'}
+- {id: CCM.TRACE_PODF.scale, value: '3', locked: true}
+- {id: CCM_ANALOG.PLL1_BYPASS.sel, value: CCM_ANALOG.PLL1}
+- {id: CCM_ANALOG.PLL1_PREDIV.scale, value: '1', locked: true}
+- {id: CCM_ANALOG.PLL1_VDIV.scale, value: '50', locked: true}
+- {id: CCM_ANALOG.PLL2.denom, value: '1', locked: true}
+- {id: CCM_ANALOG.PLL2.num, value: '0', locked: true}
+- {id: CCM_ANALOG.PLL2_BYPASS.sel, value: CCM_ANALOG.PLL2_OUT_CLK}
+- {id: CCM_ANALOG.PLL2_PFD0_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD0}
+- {id: CCM_ANALOG.PLL2_PFD1_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD1}
+- {id: CCM_ANALOG.PLL2_PFD2_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD2}
+- {id: CCM_ANALOG.PLL2_PFD3_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD3}
+- {id: CCM_ANALOG.PLL3_BYPASS.sel, value: CCM_ANALOG.PLL3}
+- {id: CCM_ANALOG.PLL3_PFD0_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD0}
+- {id: CCM_ANALOG.PLL3_PFD0_DIV.scale, value: '33', locked: true}
+- {id: CCM_ANALOG.PLL3_PFD0_MUL.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL3_PFD1_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD1}
+- {id: CCM_ANALOG.PLL3_PFD2_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD2}
+- {id: CCM_ANALOG.PLL3_PFD3_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD3}
+- {id: CCM_ANALOG.PLL4.denom, value: '50'}
+- {id: CCM_ANALOG.PLL4.div, value: '47'}
+- {id: CCM_ANALOG.PLL5.denom, value: '1'}
+- {id: CCM_ANALOG.PLL5.div, value: '40'}
+- {id: CCM_ANALOG.PLL5.num, value: '0'}
+- {id: CCM_ANALOG_PLL_ENET_POWERDOWN_CFG, value: 'Yes'}
+- {id: CCM_ANALOG_PLL_USB1_POWER_CFG, value: 'Yes'}
+sources:
+- {id: XTALOSC24M.OSC.outFreq, value: 24 MHz, enabled: true}
+- {id: XTALOSC24M.RTC_OSC.outFreq, value: 32.768 kHz, enabled: true}
+ * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
+
+/*******************************************************************************
+ * Variables for BOARD_BootClockRUN configuration
+ ******************************************************************************/
+const clock_arm_pll_config_t armPllConfig_BOARD_BootClockRUN = {
+    .loopDivider = 100, /* PLL loop divider, Fout = Fin * 50 */
+    .src = 0,           /* Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N */
+};
+const clock_sys_pll_config_t sysPllConfig_BOARD_BootClockRUN = {
+    .loopDivider = 1, /* PLL loop divider, Fout = Fin * ( 20 + loopDivider*2 + numerator / denominator ) */
+    .numerator = 0,   /* 30 bit numerator of fractional loop divider */
+    .denominator = 1, /* 30 bit denominator of fractional loop divider */
+    .src = 0,         /* Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N */
+};
+const clock_usb_pll_config_t usb1PllConfig_BOARD_BootClockRUN = {
+    .loopDivider = 0, /* PLL loop divider, Fout = Fin * 20 */
+    .src = 0,         /* Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N */
+};
+/*******************************************************************************
+ * Code for BOARD_BootClockRUN configuration
+ ******************************************************************************/
+void BOARD_BootClockRUN(void) {
+    /* Init RTC OSC clock frequency. */
+    CLOCK_SetRtcXtalFreq(32768U);
+    /* Enable 1MHz clock output. */
+    XTALOSC24M->OSC_CONFIG2 |= XTALOSC24M_OSC_CONFIG2_ENABLE_1M_MASK;
+    /* Use free 1MHz clock output. */
+    XTALOSC24M->OSC_CONFIG2 &= ~XTALOSC24M_OSC_CONFIG2_MUX_1M_MASK;
+    /* Set XTAL 24MHz clock frequency. */
+    CLOCK_SetXtalFreq(24000000U);
+    /* Enable XTAL 24MHz clock source. */
+    CLOCK_InitExternalClk(0);
+    /* Enable internal RC. */
+    CLOCK_InitRcOsc24M();
+    /* Switch clock source to external OSC. */
+    CLOCK_SwitchOsc(kCLOCK_XtalOsc);
+    /* Set Oscillator ready counter value. */
+    CCM->CCR = (CCM->CCR & (~CCM_CCR_OSCNT_MASK)) | CCM_CCR_OSCNT(127);
+    /* Setting PeriphClk2Mux and PeriphMux to provide stable clock before PLLs are initialed */
+    CLOCK_SetMux(kCLOCK_PeriphClk2Mux, 1); /* Set PERIPH_CLK2 MUX to OSC */
+    CLOCK_SetMux(kCLOCK_PeriphMux, 1);     /* Set PERIPH_CLK MUX to PERIPH_CLK2 */
+    /* Setting the VDD_SOC to 1.275V. It is necessary to config AHB to 600Mhz. */
+    DCDC->REG3 = (DCDC->REG3 & (~DCDC_REG3_TRG_MASK)) | DCDC_REG3_TRG(0x13);
+    /* Waiting for DCDC_STS_DC_OK bit is asserted */
+    while (DCDC_REG0_STS_DC_OK_MASK != (DCDC_REG0_STS_DC_OK_MASK & DCDC->REG0)) {
+    }
+    /* Set AHB_PODF. */
+    CLOCK_SetDiv(kCLOCK_AhbDiv, 0);
+    /* Disable IPG clock gate. */
+    CLOCK_DisableClock(kCLOCK_Adc1);
+    CLOCK_DisableClock(kCLOCK_Adc2);
+    CLOCK_DisableClock(kCLOCK_Xbar1);
+    CLOCK_DisableClock(kCLOCK_Xbar2);
+    CLOCK_DisableClock(kCLOCK_Xbar3);
+    /* Set IPG_PODF. */
+    CLOCK_SetDiv(kCLOCK_IpgDiv, 3);
+    /* Set ARM_PODF. */
+    CLOCK_SetDiv(kCLOCK_ArmDiv, 1);
+    /* Set PERIPH_CLK2_PODF. */
+    CLOCK_SetDiv(kCLOCK_PeriphClk2Div, 0);
+    /* Disable PERCLK clock gate. */
+    CLOCK_DisableClock(kCLOCK_Gpt1);
+    CLOCK_DisableClock(kCLOCK_Gpt1S);
+    CLOCK_DisableClock(kCLOCK_Gpt2);
+    CLOCK_DisableClock(kCLOCK_Gpt2S);
+    CLOCK_DisableClock(kCLOCK_Pit);
+    /* Set PERCLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_PerclkDiv, 1);
+    /* Disable USDHC1 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Usdhc1);
+    /* Set USDHC1_PODF. */
+    CLOCK_SetDiv(kCLOCK_Usdhc1Div, 1);
+    /* Set Usdhc1 clock source. */
+    CLOCK_SetMux(kCLOCK_Usdhc1Mux, 0);
+    /* Disable USDHC2 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Usdhc2);
+    /* Set USDHC2_PODF. */
+    CLOCK_SetDiv(kCLOCK_Usdhc2Div, 1);
+    /* Set Usdhc2 clock source. */
+    CLOCK_SetMux(kCLOCK_Usdhc2Mux, 0);
+    /* In SDK projects, SDRAM (configured by SEMC) will be initialized in either debug script or dcd.
+     * With this macro SKIP_SYSCLK_INIT, system pll (selected to be SEMC source clock in SDK projects) will be left
+     * unchanged. Note: If another clock source is selected for SEMC, user may want to avoid changing that clock as
+     * well.*/
+    #ifndef SKIP_SYSCLK_INIT
+    /* Disable Semc clock gate. */
+    CLOCK_DisableClock(kCLOCK_Semc);
+    /* Set SEMC_PODF. */
+    CLOCK_SetDiv(kCLOCK_SemcDiv, 7);
+    /* Set Semc alt clock source. */
+    CLOCK_SetMux(kCLOCK_SemcAltMux, 0);
+    /* Set Semc clock source. */
+    CLOCK_SetMux(kCLOCK_SemcMux, 0);
+    #endif
+    /* In SDK projects, external flash (configured by FLEXSPI) will be initialized by dcd.
+     * With this macro XIP_EXTERNAL_FLASH, usb1 pll (selected to be FLEXSPI clock source in SDK projects) will be left
+     * unchanged. Note: If another clock source is selected for FLEXSPI, user may want to avoid changing that clock as
+     * well.*/
+    #if !(defined(XIP_EXTERNAL_FLASH) && (XIP_EXTERNAL_FLASH == 1))
+    /* Disable Flexspi clock gate. */
+    CLOCK_DisableClock(kCLOCK_FlexSpi);
+    /* Set FLEXSPI_PODF. */
+    CLOCK_SetDiv(kCLOCK_FlexspiDiv, 1);
+    /* Set Flexspi clock source. */
+    CLOCK_SetMux(kCLOCK_FlexspiMux, 3);
+    #endif
+    /* Disable Flexspi2 clock gate. */
+    CLOCK_DisableClock(kCLOCK_FlexSpi2);
+    /* Set FLEXSPI2_PODF. */
+    CLOCK_SetDiv(kCLOCK_Flexspi2Div, 1);
+    /* Set Flexspi2 clock source. */
+    CLOCK_SetMux(kCLOCK_Flexspi2Mux, 1);
+    /* Disable CSI clock gate. */
+    CLOCK_DisableClock(kCLOCK_Csi);
+    /* Set CSI_PODF. */
+    CLOCK_SetDiv(kCLOCK_CsiDiv, 1);
+    /* Set Csi clock source. */
+    CLOCK_SetMux(kCLOCK_CsiMux, 0);
+    /* Disable LPSPI clock gate. */
+    CLOCK_DisableClock(kCLOCK_Lpspi1);
+    CLOCK_DisableClock(kCLOCK_Lpspi2);
+    CLOCK_DisableClock(kCLOCK_Lpspi3);
+    CLOCK_DisableClock(kCLOCK_Lpspi4);
+    /* Set LPSPI_PODF. */
+    CLOCK_SetDiv(kCLOCK_LpspiDiv, 4);
+    /* Set Lpspi clock source. */
+    CLOCK_SetMux(kCLOCK_LpspiMux, 2);
+    /* Disable TRACE clock gate. */
+    CLOCK_DisableClock(kCLOCK_Trace);
+    /* Set TRACE_PODF. */
+    CLOCK_SetDiv(kCLOCK_TraceDiv, 2);
+    /* Set Trace clock source. */
+    CLOCK_SetMux(kCLOCK_TraceMux, 2);
+    /* Disable SAI1 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Sai1);
+    /* Set SAI1_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Sai1PreDiv, 3);
+    /* Set SAI1_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Sai1Div, 1);
+    /* Set Sai1 clock source. */
+    CLOCK_SetMux(kCLOCK_Sai1Mux, 0);
+    /* Disable SAI2 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Sai2);
+    /* Set SAI2_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Sai2PreDiv, 3);
+    /* Set SAI2_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Sai2Div, 1);
+    /* Set Sai2 clock source. */
+    CLOCK_SetMux(kCLOCK_Sai2Mux, 0);
+    /* Disable SAI3 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Sai3);
+    /* Set SAI3_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Sai3PreDiv, 3);
+    /* Set SAI3_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Sai3Div, 1);
+    /* Set Sai3 clock source. */
+    CLOCK_SetMux(kCLOCK_Sai3Mux, 0);
+    /* Disable Lpi2c clock gate. */
+    CLOCK_DisableClock(kCLOCK_Lpi2c1);
+    CLOCK_DisableClock(kCLOCK_Lpi2c2);
+    CLOCK_DisableClock(kCLOCK_Lpi2c3);
+    /* Set LPI2C_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Lpi2cDiv, 0);
+    /* Set Lpi2c clock source. */
+    CLOCK_SetMux(kCLOCK_Lpi2cMux, 0);
+    /* Disable CAN clock gate. */
+    CLOCK_DisableClock(kCLOCK_Can1);
+    CLOCK_DisableClock(kCLOCK_Can2);
+    CLOCK_DisableClock(kCLOCK_Can3);
+    CLOCK_DisableClock(kCLOCK_Can1S);
+    CLOCK_DisableClock(kCLOCK_Can2S);
+    CLOCK_DisableClock(kCLOCK_Can3S);
+    /* Set CAN_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_CanDiv, 1);
+    /* Set Can clock source. */
+    CLOCK_SetMux(kCLOCK_CanMux, 2);
+    /* Disable UART clock gate. */
+    CLOCK_DisableClock(kCLOCK_Lpuart1);
+    CLOCK_DisableClock(kCLOCK_Lpuart2);
+    CLOCK_DisableClock(kCLOCK_Lpuart3);
+    CLOCK_DisableClock(kCLOCK_Lpuart4);
+    CLOCK_DisableClock(kCLOCK_Lpuart5);
+    CLOCK_DisableClock(kCLOCK_Lpuart6);
+    CLOCK_DisableClock(kCLOCK_Lpuart7);
+    CLOCK_DisableClock(kCLOCK_Lpuart8);
+    /* Set UART_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_UartDiv, 0);
+    /* Set Uart clock source. */
+    CLOCK_SetMux(kCLOCK_UartMux, 0);
+    /* Disable LCDIF clock gate. */
+    CLOCK_DisableClock(kCLOCK_LcdPixel);
+    /* Set LCDIF_PRED. */
+    CLOCK_SetDiv(kCLOCK_LcdifPreDiv, 1);
+    /* Set LCDIF_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_LcdifDiv, 3);
+    /* Set Lcdif pre clock source. */
+    CLOCK_SetMux(kCLOCK_LcdifPreMux, 5);
+    /* Disable SPDIF clock gate. */
+    CLOCK_DisableClock(kCLOCK_Spdif);
+    /* Set SPDIF0_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Spdif0PreDiv, 1);
+    /* Set SPDIF0_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Spdif0Div, 7);
+    /* Set Spdif clock source. */
+    CLOCK_SetMux(kCLOCK_SpdifMux, 3);
+    /* Disable Flexio1 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Flexio1);
+    /* Set FLEXIO1_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Flexio1PreDiv, 1);
+    /* Set FLEXIO1_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Flexio1Div, 7);
+    /* Set Flexio1 clock source. */
+    CLOCK_SetMux(kCLOCK_Flexio1Mux, 3);
+    /* Disable Flexio2 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Flexio2);
+    /* Set FLEXIO2_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Flexio2PreDiv, 1);
+    /* Set FLEXIO2_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Flexio2Div, 7);
+    /* Set Flexio2 clock source. */
+    CLOCK_SetMux(kCLOCK_Flexio2Mux, 3);
+    /* Set Pll3 sw clock source. */
+    CLOCK_SetMux(kCLOCK_Pll3SwMux, 0);
+    /* Init ARM PLL. */
+    CLOCK_InitArmPll(&armPllConfig_BOARD_BootClockRUN);
+    /* In SDK projects, SDRAM (configured by SEMC) will be initialized in either debug script or dcd.
+     * With this macro SKIP_SYSCLK_INIT, system pll (selected to be SEMC source clock in SDK projects) will be left
+     * unchanged. Note: If another clock source is selected for SEMC, user may want to avoid changing that clock as
+     * well.*/
+    #ifndef SKIP_SYSCLK_INIT
+    /* Init System PLL. */
+    CLOCK_InitSysPll(&sysPllConfig_BOARD_BootClockRUN);
+    /* Init System pfd0. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd0, 27);
+    /* Init System pfd1. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd1, 16);
+    /* Init System pfd2. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd2, 24);
+    /* Init System pfd3. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd3, 16);
+    #endif
+    /* In SDK projects, external flash (configured by FLEXSPI) will be initialized by dcd.
+     * With this macro XIP_EXTERNAL_FLASH, usb1 pll (selected to be FLEXSPI clock source in SDK projects) will be left
+     * unchanged. Note: If another clock source is selected for FLEXSPI, user may want to avoid changing that clock as
+     * well.*/
+    #if !(defined(XIP_EXTERNAL_FLASH) && (XIP_EXTERNAL_FLASH == 1))
+    /* Init Usb1 PLL. */
+    CLOCK_InitUsb1Pll(&usb1PllConfig_BOARD_BootClockRUN);
+    /* Init Usb1 pfd0. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd0, 33);
+    /* Init Usb1 pfd1. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd1, 16);
+    /* Init Usb1 pfd2. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd2, 17);
+    /* Init Usb1 pfd3. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd3, 19);
+    /* Disable Usb1 PLL output for USBPHY1. */
+    CCM_ANALOG->PLL_USB1 &= ~CCM_ANALOG_PLL_USB1_EN_USB_CLKS_MASK;
+    #endif
+    /* DeInit Audio PLL. */
+    CLOCK_DeinitAudioPll();
+    /* Bypass Audio PLL. */
+    CLOCK_SetPllBypass(CCM_ANALOG, kCLOCK_PllAudio, 1);
+    /* Set divider for Audio PLL. */
+    CCM_ANALOG->MISC2 &= ~CCM_ANALOG_MISC2_AUDIO_DIV_LSB_MASK;
+    CCM_ANALOG->MISC2 &= ~CCM_ANALOG_MISC2_AUDIO_DIV_MSB_MASK;
+    /* Enable Audio PLL output. */
+    CCM_ANALOG->PLL_AUDIO |= CCM_ANALOG_PLL_AUDIO_ENABLE_MASK;
+    /* DeInit Video PLL. */
+    CLOCK_DeinitVideoPll();
+    /* Bypass Video PLL. */
+    CCM_ANALOG->PLL_VIDEO |= CCM_ANALOG_PLL_VIDEO_BYPASS_MASK;
+    /* Set divider for Video PLL. */
+    CCM_ANALOG->MISC2 = (CCM_ANALOG->MISC2 & (~CCM_ANALOG_MISC2_VIDEO_DIV_MASK)) | CCM_ANALOG_MISC2_VIDEO_DIV(0);
+    /* Enable Video PLL output. */
+    CCM_ANALOG->PLL_VIDEO |= CCM_ANALOG_PLL_VIDEO_ENABLE_MASK;
+    /* DeInit Enet PLL. */
+    CLOCK_DeinitEnetPll();
+    /* Bypass Enet PLL. */
+    CLOCK_SetPllBypass(CCM_ANALOG, kCLOCK_PllEnet, 1);
+    /* Set Enet output divider. */
+    CCM_ANALOG->PLL_ENET =
+        (CCM_ANALOG->PLL_ENET & (~CCM_ANALOG_PLL_ENET_DIV_SELECT_MASK)) | CCM_ANALOG_PLL_ENET_DIV_SELECT(1);
+    /* Enable Enet output. */
+    CCM_ANALOG->PLL_ENET |= CCM_ANALOG_PLL_ENET_ENABLE_MASK;
+    /* Set Enet2 output divider. */
+    CCM_ANALOG->PLL_ENET =
+        (CCM_ANALOG->PLL_ENET & (~CCM_ANALOG_PLL_ENET_ENET2_DIV_SELECT_MASK)) | CCM_ANALOG_PLL_ENET_ENET2_DIV_SELECT(0);
+    /* Enable Enet2 output. */
+    CCM_ANALOG->PLL_ENET |= CCM_ANALOG_PLL_ENET_ENET2_REF_EN_MASK;
+    /* Enable Enet25M output. */
+    CCM_ANALOG->PLL_ENET |= CCM_ANALOG_PLL_ENET_ENET_25M_REF_EN_MASK;
+    /* DeInit Usb2 PLL. */
+    CLOCK_DeinitUsb2Pll();
+    /* Bypass Usb2 PLL. */
+    CLOCK_SetPllBypass(CCM_ANALOG, kCLOCK_PllUsb2, 1);
+    /* Enable Usb2 PLL output. */
+    CCM_ANALOG->PLL_USB2 |= CCM_ANALOG_PLL_USB2_ENABLE_MASK;
+    /* Set preperiph clock source. */
+    CLOCK_SetMux(kCLOCK_PrePeriphMux, 3);
+    /* Set periph clock source. */
+    CLOCK_SetMux(kCLOCK_PeriphMux, 0);
+    /* Set periph clock2 clock source. */
+    CLOCK_SetMux(kCLOCK_PeriphClk2Mux, 0);
+    /* Set per clock source. */
+    CLOCK_SetMux(kCLOCK_PerclkMux, 0);
+    /* Set lvds1 clock source. */
+    CCM_ANALOG->MISC1 =
+        (CCM_ANALOG->MISC1 & (~CCM_ANALOG_MISC1_LVDS1_CLK_SEL_MASK)) | CCM_ANALOG_MISC1_LVDS1_CLK_SEL(0);
+    /* Set clock out1 divider. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO1_DIV_MASK)) | CCM_CCOSR_CLKO1_DIV(0);
+    /* Set clock out1 source. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO1_SEL_MASK)) | CCM_CCOSR_CLKO1_SEL(1);
+    /* Set clock out2 divider. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO2_DIV_MASK)) | CCM_CCOSR_CLKO2_DIV(0);
+    /* Set clock out2 source. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO2_SEL_MASK)) | CCM_CCOSR_CLKO2_SEL(18);
+    /* Set clock out1 drives clock out1. */
+    CCM->CCOSR &= ~CCM_CCOSR_CLK_OUT_SEL_MASK;
+    /* Disable clock out1. */
+    CCM->CCOSR &= ~CCM_CCOSR_CLKO1_EN_MASK;
+    /* Disable clock out2. */
+    CCM->CCOSR &= ~CCM_CCOSR_CLKO2_EN_MASK;
+    /* Set SAI1 MCLK1 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI1MClk1Sel, 0);
+    /* Set SAI1 MCLK2 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI1MClk2Sel, 0);
+    /* Set SAI1 MCLK3 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI1MClk3Sel, 0);
+    /* Set SAI2 MCLK3 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI2MClk3Sel, 0);
+    /* Set SAI3 MCLK3 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI3MClk3Sel, 0);
+    /* Set MQS configuration. */
+    IOMUXC_MQSConfig(IOMUXC_GPR, kIOMUXC_MqsPwmOverSampleRate32, 0);
+    /* Set ENET1 Tx clock source. */
+    IOMUXC_EnableMode(IOMUXC_GPR, kIOMUXC_GPR_ENET1RefClkMode, false);
+    /* Set ENET2 Tx clock source. */
+    #if defined(FSL_IOMUXC_DRIVER_VERSION) && (FSL_IOMUXC_DRIVER_VERSION != (MAKE_VERSION(2, 0, 0)))
+    IOMUXC_EnableMode(IOMUXC_GPR, kIOMUXC_GPR_ENET2RefClkMode, false);
+    #else
+    IOMUXC_EnableMode(IOMUXC_GPR, IOMUXC_GPR_GPR1_ENET2_CLK_SEL_MASK, false);
+    #endif
+    /* Set GPT1 High frequency reference clock source. */
+    IOMUXC_GPR->GPR5 &= ~IOMUXC_GPR_GPR5_VREF_1M_CLK_GPT1_MASK;
+    /* Set GPT2 High frequency reference clock source. */
+    IOMUXC_GPR->GPR5 &= ~IOMUXC_GPR_GPR5_VREF_1M_CLK_GPT2_MASK;
+    /* Set SystemCoreClock variable. */
+    SystemCoreClock = BOARD_BOOTCLOCKRUN_CORE_CLOCK;
+}
diff --git a/ports/mimxrt/boards/MIMXRT1060_EVK/clock_config.h b/ports/mimxrt/boards/MIMXRT1062_clock_config.h
similarity index 100%
rename from ports/mimxrt/boards/MIMXRT1060_EVK/clock_config.h
rename to ports/mimxrt/boards/MIMXRT1062_clock_config.h
diff --git a/ports/mimxrt/boards/MIMXRT1064_clock_config.c b/ports/mimxrt/boards/MIMXRT1064_clock_config.c
new file mode 100644
index 0000000000..5e49a2fff8
--- /dev/null
+++ b/ports/mimxrt/boards/MIMXRT1064_clock_config.c
@@ -0,0 +1,490 @@
+/*
+ * Copyright 2018-2019 NXP
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * How to setup clock using clock driver functions:
+ *
+ * 1. Call CLOCK_InitXXXPLL() to configure corresponding PLL clock.
+ *
+ * 2. Call CLOCK_InitXXXpfd() to configure corresponding PLL pfd clock.
+ *
+ * 3. Call CLOCK_SetMux() to configure corresponding clock source for target clock out.
+ *
+ * 4. Call CLOCK_SetDiv() to configure corresponding clock divider for target clock out.
+ *
+ * 5. Call CLOCK_SetXtalFreq() to set XTAL frequency based on board settings.
+ *
+ */
+
+/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
+!!GlobalInfo
+product: Clocks v5.0
+processor: MIMXRT1064xxxxA
+package_id: MIMXRT1064DVL6A
+mcu_data: ksdk2_0
+processor_version: 0.0.0
+board: MIMXRT1064-EVK
+ * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
+
+#include CLOCK_CONFIG_H
+#include "fsl_iomuxc.h"
+
+/*******************************************************************************
+ * Definitions
+ ******************************************************************************/
+
+/*******************************************************************************
+ * Variables
+ ******************************************************************************/
+/* System clock frequency. */
+extern uint32_t SystemCoreClock;
+
+/*******************************************************************************
+ ************************ BOARD_InitBootClocks function ************************
+ ******************************************************************************/
+void BOARD_InitBootClocks(void) {
+    BOARD_BootClockRUN();
+}
+
+/*******************************************************************************
+ ********************** Configuration BOARD_BootClockRUN ***********************
+ ******************************************************************************/
+/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
+!!Configuration
+name: BOARD_BootClockRUN
+called_from_default_init: true
+outputs:
+- {id: AHB_CLK_ROOT.outFreq, value: 600 MHz}
+- {id: CAN_CLK_ROOT.outFreq, value: 40 MHz}
+- {id: CKIL_SYNC_CLK_ROOT.outFreq, value: 32.768 kHz}
+- {id: CLK_1M.outFreq, value: 1 MHz}
+- {id: CLK_24M.outFreq, value: 24 MHz}
+- {id: CSI_CLK_ROOT.outFreq, value: 12 MHz}
+- {id: ENET1_TX_CLK.outFreq, value: 2.4 MHz}
+- {id: ENET2_125M_CLK.outFreq, value: 1.2 MHz}
+- {id: ENET2_TX_CLK.outFreq, value: 1.2 MHz}
+- {id: ENET_125M_CLK.outFreq, value: 2.4 MHz}
+- {id: ENET_25M_REF_CLK.outFreq, value: 1.2 MHz}
+- {id: FLEXIO1_CLK_ROOT.outFreq, value: 30 MHz}
+- {id: FLEXIO2_CLK_ROOT.outFreq, value: 30 MHz}
+- {id: FLEXSPI2_CLK_ROOT.outFreq, value: 1440/11 MHz}
+- {id: FLEXSPI_CLK_ROOT.outFreq, value: 1440/11 MHz}
+- {id: GPT1_ipg_clk_highfreq.outFreq, value: 75 MHz}
+- {id: GPT2_ipg_clk_highfreq.outFreq, value: 75 MHz}
+- {id: IPG_CLK_ROOT.outFreq, value: 150 MHz}
+- {id: LCDIF_CLK_ROOT.outFreq, value: 67.5 MHz}
+- {id: LPI2C_CLK_ROOT.outFreq, value: 60 MHz}
+- {id: LPSPI_CLK_ROOT.outFreq, value: 105.6 MHz}
+- {id: LVDS1_CLK.outFreq, value: 1.2 GHz}
+- {id: MQS_MCLK.outFreq, value: 1080/17 MHz}
+- {id: PERCLK_CLK_ROOT.outFreq, value: 75 MHz}
+- {id: PLL7_MAIN_CLK.outFreq, value: 24 MHz}
+- {id: SAI1_CLK_ROOT.outFreq, value: 1080/17 MHz}
+- {id: SAI1_MCLK1.outFreq, value: 1080/17 MHz}
+- {id: SAI1_MCLK2.outFreq, value: 1080/17 MHz}
+- {id: SAI1_MCLK3.outFreq, value: 30 MHz}
+- {id: SAI2_CLK_ROOT.outFreq, value: 1080/17 MHz}
+- {id: SAI2_MCLK1.outFreq, value: 1080/17 MHz}
+- {id: SAI2_MCLK3.outFreq, value: 30 MHz}
+- {id: SAI3_CLK_ROOT.outFreq, value: 1080/17 MHz}
+- {id: SAI3_MCLK1.outFreq, value: 1080/17 MHz}
+- {id: SAI3_MCLK3.outFreq, value: 30 MHz}
+- {id: SEMC_CLK_ROOT.outFreq, value: 75 MHz}
+- {id: SPDIF0_CLK_ROOT.outFreq, value: 30 MHz}
+- {id: TRACE_CLK_ROOT.outFreq, value: 352/3 MHz}
+- {id: UART_CLK_ROOT.outFreq, value: 80 MHz}
+- {id: USDHC1_CLK_ROOT.outFreq, value: 198 MHz}
+- {id: USDHC2_CLK_ROOT.outFreq, value: 198 MHz}
+settings:
+- {id: CCM.AHB_PODF.scale, value: '1', locked: true}
+- {id: CCM.ARM_PODF.scale, value: '2', locked: true}
+- {id: CCM.FLEXSPI2_PODF.scale, value: '2', locked: true}
+- {id: CCM.FLEXSPI2_SEL.sel, value: CCM_ANALOG.PLL3_PFD0_CLK}
+- {id: CCM.FLEXSPI_PODF.scale, value: '2', locked: true}
+- {id: CCM.FLEXSPI_SEL.sel, value: CCM_ANALOG.PLL3_PFD0_CLK}
+- {id: CCM.LPSPI_PODF.scale, value: '5', locked: true}
+- {id: CCM.PERCLK_PODF.scale, value: '2', locked: true}
+- {id: CCM.SEMC_PODF.scale, value: '8'}
+- {id: CCM.TRACE_PODF.scale, value: '3', locked: true}
+- {id: CCM_ANALOG.PLL1_BYPASS.sel, value: CCM_ANALOG.PLL1}
+- {id: CCM_ANALOG.PLL1_PREDIV.scale, value: '1', locked: true}
+- {id: CCM_ANALOG.PLL1_VDIV.scale, value: '50', locked: true}
+- {id: CCM_ANALOG.PLL2.denom, value: '1', locked: true}
+- {id: CCM_ANALOG.PLL2.num, value: '0', locked: true}
+- {id: CCM_ANALOG.PLL2_BYPASS.sel, value: CCM_ANALOG.PLL2_OUT_CLK}
+- {id: CCM_ANALOG.PLL2_PFD0_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD0}
+- {id: CCM_ANALOG.PLL2_PFD1_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD1}
+- {id: CCM_ANALOG.PLL2_PFD2_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD2}
+- {id: CCM_ANALOG.PLL2_PFD3_BYPASS.sel, value: CCM_ANALOG.PLL2_PFD3}
+- {id: CCM_ANALOG.PLL3_BYPASS.sel, value: CCM_ANALOG.PLL3}
+- {id: CCM_ANALOG.PLL3_PFD0_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD0}
+- {id: CCM_ANALOG.PLL3_PFD0_DIV.scale, value: '33', locked: true}
+- {id: CCM_ANALOG.PLL3_PFD0_MUL.scale, value: '18', locked: true}
+- {id: CCM_ANALOG.PLL3_PFD1_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD1}
+- {id: CCM_ANALOG.PLL3_PFD2_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD2}
+- {id: CCM_ANALOG.PLL3_PFD3_BYPASS.sel, value: CCM_ANALOG.PLL3_PFD3}
+- {id: CCM_ANALOG.PLL4.denom, value: '50'}
+- {id: CCM_ANALOG.PLL4.div, value: '47'}
+- {id: CCM_ANALOG.PLL5.denom, value: '1'}
+- {id: CCM_ANALOG.PLL5.div, value: '40'}
+- {id: CCM_ANALOG.PLL5.num, value: '0'}
+- {id: CCM_ANALOG_PLL_ENET_POWERDOWN_CFG, value: 'Yes'}
+- {id: CCM_ANALOG_PLL_USB1_POWER_CFG, value: 'Yes'}
+sources:
+- {id: XTALOSC24M.OSC.outFreq, value: 24 MHz, enabled: true}
+- {id: XTALOSC24M.RTC_OSC.outFreq, value: 32.768 kHz, enabled: true}
+ * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
+
+/*******************************************************************************
+ * Variables for BOARD_BootClockRUN configuration
+ ******************************************************************************/
+const clock_arm_pll_config_t armPllConfig_BOARD_BootClockRUN = {
+    .loopDivider = 100, /* PLL loop divider, Fout = Fin * 50 */
+    .src = 0,           /* Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N */
+};
+const clock_sys_pll_config_t sysPllConfig_BOARD_BootClockRUN = {
+    .loopDivider = 1, /* PLL loop divider, Fout = Fin * ( 20 + loopDivider*2 + numerator / denominator ) */
+    .numerator = 0,   /* 30 bit numerator of fractional loop divider */
+    .denominator = 1, /* 30 bit denominator of fractional loop divider */
+    .src = 0,         /* Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N */
+};
+const clock_usb_pll_config_t usb1PllConfig_BOARD_BootClockRUN = {
+    .loopDivider = 0, /* PLL loop divider, Fout = Fin * 20 */
+    .src = 0,         /* Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N */
+};
+/*******************************************************************************
+ * Code for BOARD_BootClockRUN configuration
+ ******************************************************************************/
+void BOARD_BootClockRUN(void) {
+    /* Init RTC OSC clock frequency. */
+    CLOCK_SetRtcXtalFreq(32768U);
+    /* Enable 1MHz clock output. */
+    XTALOSC24M->OSC_CONFIG2 |= XTALOSC24M_OSC_CONFIG2_ENABLE_1M_MASK;
+    /* Use free 1MHz clock output. */
+    XTALOSC24M->OSC_CONFIG2 &= ~XTALOSC24M_OSC_CONFIG2_MUX_1M_MASK;
+    /* Set XTAL 24MHz clock frequency. */
+    CLOCK_SetXtalFreq(24000000U);
+    /* Enable XTAL 24MHz clock source. */
+    CLOCK_InitExternalClk(0);
+    /* Enable internal RC. */
+    CLOCK_InitRcOsc24M();
+    /* Switch clock source to external OSC. */
+    CLOCK_SwitchOsc(kCLOCK_XtalOsc);
+    /* Set Oscillator ready counter value. */
+    CCM->CCR = (CCM->CCR & (~CCM_CCR_OSCNT_MASK)) | CCM_CCR_OSCNT(127);
+    /* Setting PeriphClk2Mux and PeriphMux to provide stable clock before PLLs are initialed */
+    CLOCK_SetMux(kCLOCK_PeriphClk2Mux, 1); /* Set PERIPH_CLK2 MUX to OSC */
+    CLOCK_SetMux(kCLOCK_PeriphMux, 1);     /* Set PERIPH_CLK MUX to PERIPH_CLK2 */
+    /* Setting the VDD_SOC to 1.275V. It is necessary to config AHB to 600Mhz. */
+    DCDC->REG3 = (DCDC->REG3 & (~DCDC_REG3_TRG_MASK)) | DCDC_REG3_TRG(0x13);
+    /* Waiting for DCDC_STS_DC_OK bit is asserted */
+    while (DCDC_REG0_STS_DC_OK_MASK != (DCDC_REG0_STS_DC_OK_MASK & DCDC->REG0)) {
+    }
+    /* Set AHB_PODF. */
+    CLOCK_SetDiv(kCLOCK_AhbDiv, 0);
+    /* Disable IPG clock gate. */
+    CLOCK_DisableClock(kCLOCK_Adc1);
+    CLOCK_DisableClock(kCLOCK_Adc2);
+    CLOCK_DisableClock(kCLOCK_Xbar1);
+    CLOCK_DisableClock(kCLOCK_Xbar2);
+    CLOCK_DisableClock(kCLOCK_Xbar3);
+    /* Set IPG_PODF. */
+    CLOCK_SetDiv(kCLOCK_IpgDiv, 3);
+    /* Set ARM_PODF. */
+    CLOCK_SetDiv(kCLOCK_ArmDiv, 1);
+    /* Set PERIPH_CLK2_PODF. */
+    CLOCK_SetDiv(kCLOCK_PeriphClk2Div, 0);
+    /* Disable PERCLK clock gate. */
+    CLOCK_DisableClock(kCLOCK_Gpt1);
+    CLOCK_DisableClock(kCLOCK_Gpt1S);
+    CLOCK_DisableClock(kCLOCK_Gpt2);
+    CLOCK_DisableClock(kCLOCK_Gpt2S);
+    CLOCK_DisableClock(kCLOCK_Pit);
+    /* Set PERCLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_PerclkDiv, 1);
+    /* Disable USDHC1 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Usdhc1);
+    /* Set USDHC1_PODF. */
+    CLOCK_SetDiv(kCLOCK_Usdhc1Div, 1);
+    /* Set Usdhc1 clock source. */
+    CLOCK_SetMux(kCLOCK_Usdhc1Mux, 0);
+    /* Disable USDHC2 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Usdhc2);
+    /* Set USDHC2_PODF. */
+    CLOCK_SetDiv(kCLOCK_Usdhc2Div, 1);
+    /* Set Usdhc2 clock source. */
+    CLOCK_SetMux(kCLOCK_Usdhc2Mux, 0);
+    /* In SDK projects, SDRAM (configured by SEMC) will be initialized in either debug script or dcd.
+     * With this macro SKIP_SYSCLK_INIT, system pll (selected to be SEMC source clock in SDK projects) will be left
+     * unchanged. Note: If another clock source is selected for SEMC, user may want to avoid changing that clock as
+     * well.*/
+    #ifndef SKIP_SYSCLK_INIT
+    /* Disable Semc clock gate. */
+    CLOCK_DisableClock(kCLOCK_Semc);
+    /* Set SEMC_PODF. */
+    CLOCK_SetDiv(kCLOCK_SemcDiv, 7);
+    /* Set Semc alt clock source. */
+    CLOCK_SetMux(kCLOCK_SemcAltMux, 0);
+    /* Set Semc clock source. */
+    CLOCK_SetMux(kCLOCK_SemcMux, 0);
+    #endif
+    /* Disable Flexspi clock gate. */
+    CLOCK_DisableClock(kCLOCK_FlexSpi);
+    /* Set FLEXSPI_PODF. */
+    CLOCK_SetDiv(kCLOCK_FlexspiDiv, 1);
+    /* Set Flexspi clock source. */
+    CLOCK_SetMux(kCLOCK_FlexspiMux, 3);
+    /* In SDK projects, external flash (configured by FLEXSPI2) will be initialized by dcd.
+     * With this macro XIP_EXTERNAL_FLASH, usb1 pll (selected to be FLEXSPI2 clock source in SDK projects) will be left
+     * unchanged.
+     * Note: If another clock source is selected for FLEXSPI2, user may want to avoid changing that clock as well.*/
+    #if !(defined(XIP_EXTERNAL_FLASH) && (XIP_EXTERNAL_FLASH == 1))
+    /* Disable Flexspi2 clock gate. */
+    CLOCK_DisableClock(kCLOCK_FlexSpi2);
+    /* Set FLEXSPI2_PODF. */
+    CLOCK_SetDiv(kCLOCK_Flexspi2Div, 1);
+    /* Set Flexspi2 clock source. */
+    CLOCK_SetMux(kCLOCK_Flexspi2Mux, 1);
+    #endif
+    /* Disable CSI clock gate. */
+    CLOCK_DisableClock(kCLOCK_Csi);
+    /* Set CSI_PODF. */
+    CLOCK_SetDiv(kCLOCK_CsiDiv, 1);
+    /* Set Csi clock source. */
+    CLOCK_SetMux(kCLOCK_CsiMux, 0);
+    /* Disable LPSPI clock gate. */
+    CLOCK_DisableClock(kCLOCK_Lpspi1);
+    CLOCK_DisableClock(kCLOCK_Lpspi2);
+    CLOCK_DisableClock(kCLOCK_Lpspi3);
+    CLOCK_DisableClock(kCLOCK_Lpspi4);
+    /* Set LPSPI_PODF. */
+    CLOCK_SetDiv(kCLOCK_LpspiDiv, 4);
+    /* Set Lpspi clock source. */
+    CLOCK_SetMux(kCLOCK_LpspiMux, 2);
+    /* Disable TRACE clock gate. */
+    CLOCK_DisableClock(kCLOCK_Trace);
+    /* Set TRACE_PODF. */
+    CLOCK_SetDiv(kCLOCK_TraceDiv, 2);
+    /* Set Trace clock source. */
+    CLOCK_SetMux(kCLOCK_TraceMux, 2);
+    /* Disable SAI1 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Sai1);
+    /* Set SAI1_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Sai1PreDiv, 3);
+    /* Set SAI1_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Sai1Div, 1);
+    /* Set Sai1 clock source. */
+    CLOCK_SetMux(kCLOCK_Sai1Mux, 0);
+    /* Disable SAI2 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Sai2);
+    /* Set SAI2_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Sai2PreDiv, 3);
+    /* Set SAI2_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Sai2Div, 1);
+    /* Set Sai2 clock source. */
+    CLOCK_SetMux(kCLOCK_Sai2Mux, 0);
+    /* Disable SAI3 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Sai3);
+    /* Set SAI3_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Sai3PreDiv, 3);
+    /* Set SAI3_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Sai3Div, 1);
+    /* Set Sai3 clock source. */
+    CLOCK_SetMux(kCLOCK_Sai3Mux, 0);
+    /* Disable Lpi2c clock gate. */
+    CLOCK_DisableClock(kCLOCK_Lpi2c1);
+    CLOCK_DisableClock(kCLOCK_Lpi2c2);
+    CLOCK_DisableClock(kCLOCK_Lpi2c3);
+    /* Set LPI2C_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Lpi2cDiv, 0);
+    /* Set Lpi2c clock source. */
+    CLOCK_SetMux(kCLOCK_Lpi2cMux, 0);
+    /* Disable CAN clock gate. */
+    CLOCK_DisableClock(kCLOCK_Can1);
+    CLOCK_DisableClock(kCLOCK_Can2);
+    CLOCK_DisableClock(kCLOCK_Can3);
+    CLOCK_DisableClock(kCLOCK_Can1S);
+    CLOCK_DisableClock(kCLOCK_Can2S);
+    CLOCK_DisableClock(kCLOCK_Can3S);
+    /* Set CAN_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_CanDiv, 1);
+    /* Set Can clock source. */
+    CLOCK_SetMux(kCLOCK_CanMux, 2);
+    /* Disable UART clock gate. */
+    CLOCK_DisableClock(kCLOCK_Lpuart1);
+    CLOCK_DisableClock(kCLOCK_Lpuart2);
+    CLOCK_DisableClock(kCLOCK_Lpuart3);
+    CLOCK_DisableClock(kCLOCK_Lpuart4);
+    CLOCK_DisableClock(kCLOCK_Lpuart5);
+    CLOCK_DisableClock(kCLOCK_Lpuart6);
+    CLOCK_DisableClock(kCLOCK_Lpuart7);
+    CLOCK_DisableClock(kCLOCK_Lpuart8);
+    /* Set UART_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_UartDiv, 0);
+    /* Set Uart clock source. */
+    CLOCK_SetMux(kCLOCK_UartMux, 0);
+    /* Disable LCDIF clock gate. */
+    CLOCK_DisableClock(kCLOCK_LcdPixel);
+    /* Set LCDIF_PRED. */
+    CLOCK_SetDiv(kCLOCK_LcdifPreDiv, 1);
+    /* Set LCDIF_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_LcdifDiv, 3);
+    /* Set Lcdif pre clock source. */
+    CLOCK_SetMux(kCLOCK_LcdifPreMux, 5);
+    /* Disable SPDIF clock gate. */
+    CLOCK_DisableClock(kCLOCK_Spdif);
+    /* Set SPDIF0_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Spdif0PreDiv, 1);
+    /* Set SPDIF0_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Spdif0Div, 7);
+    /* Set Spdif clock source. */
+    CLOCK_SetMux(kCLOCK_SpdifMux, 3);
+    /* Disable Flexio1 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Flexio1);
+    /* Set FLEXIO1_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Flexio1PreDiv, 1);
+    /* Set FLEXIO1_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Flexio1Div, 7);
+    /* Set Flexio1 clock source. */
+    CLOCK_SetMux(kCLOCK_Flexio1Mux, 3);
+    /* Disable Flexio2 clock gate. */
+    CLOCK_DisableClock(kCLOCK_Flexio2);
+    /* Set FLEXIO2_CLK_PRED. */
+    CLOCK_SetDiv(kCLOCK_Flexio2PreDiv, 1);
+    /* Set FLEXIO2_CLK_PODF. */
+    CLOCK_SetDiv(kCLOCK_Flexio2Div, 7);
+    /* Set Flexio2 clock source. */
+    CLOCK_SetMux(kCLOCK_Flexio2Mux, 3);
+    /* Set Pll3 sw clock source. */
+    CLOCK_SetMux(kCLOCK_Pll3SwMux, 0);
+    /* Init ARM PLL. */
+    CLOCK_InitArmPll(&armPllConfig_BOARD_BootClockRUN);
+    /* In SDK projects, SDRAM (configured by SEMC) will be initialized in either debug script or dcd.
+     * With this macro SKIP_SYSCLK_INIT, system pll (selected to be SEMC source clock in SDK projects) will be left
+     * unchanged. Note: If another clock source is selected for SEMC, user may want to avoid changing that clock as
+     * well.*/
+    #ifndef SKIP_SYSCLK_INIT
+    /* Init System PLL. */
+    CLOCK_InitSysPll(&sysPllConfig_BOARD_BootClockRUN);
+    /* Init System pfd0. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd0, 27);
+    /* Init System pfd1. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd1, 16);
+    /* Init System pfd2. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd2, 24);
+    /* Init System pfd3. */
+    CLOCK_InitSysPfd(kCLOCK_Pfd3, 16);
+    #endif
+    /* In SDK projects, external flash (configured by FLEXSPI2) will be initialized by dcd.
+     * With this macro XIP_EXTERNAL_FLASH, usb1 pll (selected to be FLEXSPI2 clock source in SDK projects) will be left
+     * unchanged.
+     * Note: If another clock source is selected for FLEXSPI2, user may want to avoid changing that clock as well.*/
+    #if !(defined(XIP_EXTERNAL_FLASH) && (XIP_EXTERNAL_FLASH == 1))
+    /* Init Usb1 PLL. */
+    CLOCK_InitUsb1Pll(&usb1PllConfig_BOARD_BootClockRUN);
+    /* Init Usb1 pfd0. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd0, 33);
+    /* Init Usb1 pfd1. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd1, 16);
+    /* Init Usb1 pfd2. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd2, 17);
+    /* Init Usb1 pfd3. */
+    CLOCK_InitUsb1Pfd(kCLOCK_Pfd3, 19);
+    /* Disable Usb1 PLL output for USBPHY1. */
+    CCM_ANALOG->PLL_USB1 &= ~CCM_ANALOG_PLL_USB1_EN_USB_CLKS_MASK;
+    #endif
+    /* DeInit Audio PLL. */
+    CLOCK_DeinitAudioPll();
+    /* Bypass Audio PLL. */
+    CLOCK_SetPllBypass(CCM_ANALOG, kCLOCK_PllAudio, 1);
+    /* Set divider for Audio PLL. */
+    CCM_ANALOG->MISC2 &= ~CCM_ANALOG_MISC2_AUDIO_DIV_LSB_MASK;
+    CCM_ANALOG->MISC2 &= ~CCM_ANALOG_MISC2_AUDIO_DIV_MSB_MASK;
+    /* Enable Audio PLL output. */
+    CCM_ANALOG->PLL_AUDIO |= CCM_ANALOG_PLL_AUDIO_ENABLE_MASK;
+    /* DeInit Video PLL. */
+    CLOCK_DeinitVideoPll();
+    /* Bypass Video PLL. */
+    CCM_ANALOG->PLL_VIDEO |= CCM_ANALOG_PLL_VIDEO_BYPASS_MASK;
+    /* Set divider for Video PLL. */
+    CCM_ANALOG->MISC2 = (CCM_ANALOG->MISC2 & (~CCM_ANALOG_MISC2_VIDEO_DIV_MASK)) | CCM_ANALOG_MISC2_VIDEO_DIV(0);
+    /* Enable Video PLL output. */
+    CCM_ANALOG->PLL_VIDEO |= CCM_ANALOG_PLL_VIDEO_ENABLE_MASK;
+    /* DeInit Enet PLL. */
+    CLOCK_DeinitEnetPll();
+    /* Bypass Enet PLL. */
+    CLOCK_SetPllBypass(CCM_ANALOG, kCLOCK_PllEnet, 1);
+    /* Set Enet output divider. */
+    CCM_ANALOG->PLL_ENET =
+        (CCM_ANALOG->PLL_ENET & (~CCM_ANALOG_PLL_ENET_DIV_SELECT_MASK)) | CCM_ANALOG_PLL_ENET_DIV_SELECT(1);
+    /* Enable Enet output. */
+    CCM_ANALOG->PLL_ENET |= CCM_ANALOG_PLL_ENET_ENABLE_MASK;
+    /* Set Enet2 output divider. */
+    CCM_ANALOG->PLL_ENET =
+        (CCM_ANALOG->PLL_ENET & (~CCM_ANALOG_PLL_ENET_ENET2_DIV_SELECT_MASK)) | CCM_ANALOG_PLL_ENET_ENET2_DIV_SELECT(0);
+    /* Enable Enet2 output. */
+    CCM_ANALOG->PLL_ENET |= CCM_ANALOG_PLL_ENET_ENET2_REF_EN_MASK;
+    /* Enable Enet25M output. */
+    CCM_ANALOG->PLL_ENET |= CCM_ANALOG_PLL_ENET_ENET_25M_REF_EN_MASK;
+    /* DeInit Usb2 PLL. */
+    CLOCK_DeinitUsb2Pll();
+    /* Bypass Usb2 PLL. */
+    CLOCK_SetPllBypass(CCM_ANALOG, kCLOCK_PllUsb2, 1);
+    /* Enable Usb2 PLL output. */
+    CCM_ANALOG->PLL_USB2 |= CCM_ANALOG_PLL_USB2_ENABLE_MASK;
+    /* Set preperiph clock source. */
+    CLOCK_SetMux(kCLOCK_PrePeriphMux, 3);
+    /* Set periph clock source. */
+    CLOCK_SetMux(kCLOCK_PeriphMux, 0);
+    /* Set periph clock2 clock source. */
+    CLOCK_SetMux(kCLOCK_PeriphClk2Mux, 0);
+    /* Set per clock source. */
+    CLOCK_SetMux(kCLOCK_PerclkMux, 0);
+    /* Set lvds1 clock source. */
+    CCM_ANALOG->MISC1 =
+        (CCM_ANALOG->MISC1 & (~CCM_ANALOG_MISC1_LVDS1_CLK_SEL_MASK)) | CCM_ANALOG_MISC1_LVDS1_CLK_SEL(0);
+    /* Set clock out1 divider. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO1_DIV_MASK)) | CCM_CCOSR_CLKO1_DIV(0);
+    /* Set clock out1 source. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO1_SEL_MASK)) | CCM_CCOSR_CLKO1_SEL(1);
+    /* Set clock out2 divider. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO2_DIV_MASK)) | CCM_CCOSR_CLKO2_DIV(0);
+    /* Set clock out2 source. */
+    CCM->CCOSR = (CCM->CCOSR & (~CCM_CCOSR_CLKO2_SEL_MASK)) | CCM_CCOSR_CLKO2_SEL(18);
+    /* Set clock out1 drives clock out1. */
+    CCM->CCOSR &= ~CCM_CCOSR_CLK_OUT_SEL_MASK;
+    /* Disable clock out1. */
+    CCM->CCOSR &= ~CCM_CCOSR_CLKO1_EN_MASK;
+    /* Disable clock out2. */
+    CCM->CCOSR &= ~CCM_CCOSR_CLKO2_EN_MASK;
+    /* Set SAI1 MCLK1 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI1MClk1Sel, 0);
+    /* Set SAI1 MCLK2 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI1MClk2Sel, 0);
+    /* Set SAI1 MCLK3 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI1MClk3Sel, 0);
+    /* Set SAI2 MCLK3 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI2MClk3Sel, 0);
+    /* Set SAI3 MCLK3 clock source. */
+    IOMUXC_SetSaiMClkClockSource(IOMUXC_GPR, kIOMUXC_GPR_SAI3MClk3Sel, 0);
+    /* Set MQS configuration. */
+    IOMUXC_MQSConfig(IOMUXC_GPR, kIOMUXC_MqsPwmOverSampleRate32, 0);
+    /* Set ENET1 Tx clock source. */
+    IOMUXC_EnableMode(IOMUXC_GPR, kIOMUXC_GPR_ENET1RefClkMode, false);
+    /* Set ENET2 Tx clock source. */
+    #if defined(FSL_IOMUXC_DRIVER_VERSION) && (FSL_IOMUXC_DRIVER_VERSION != (MAKE_VERSION(2, 0, 0)))
+    IOMUXC_EnableMode(IOMUXC_GPR, kIOMUXC_GPR_ENET2RefClkMode, false);
+    #else
+    IOMUXC_EnableMode(IOMUXC_GPR, IOMUXC_GPR_GPR1_ENET2_CLK_SEL_MASK, false);
+    #endif
+    /* Set GPT1 High frequency reference clock source. */
+    IOMUXC_GPR->GPR5 &= ~IOMUXC_GPR_GPR5_VREF_1M_CLK_GPT1_MASK;
+    /* Set GPT2 High frequency reference clock source. */
+    IOMUXC_GPR->GPR5 &= ~IOMUXC_GPR_GPR5_VREF_1M_CLK_GPT2_MASK;
+    /* Set SystemCoreClock variable. */
+    SystemCoreClock = BOARD_BOOTCLOCKRUN_CORE_CLOCK;
+}
diff --git a/ports/mimxrt/boards/MIMXRT1064_EVK/clock_config.h b/ports/mimxrt/boards/MIMXRT1064_clock_config.h
similarity index 100%
rename from ports/mimxrt/boards/MIMXRT1064_EVK/clock_config.h
rename to ports/mimxrt/boards/MIMXRT1064_clock_config.h
diff --git a/ports/mimxrt/boards/OLIMEX_RT1010/clock_config.h b/ports/mimxrt/boards/OLIMEX_RT1010/clock_config.h
deleted file mode 100644
index 76f3df422f..0000000000
--- a/ports/mimxrt/boards/OLIMEX_RT1010/clock_config.h
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
- * Copyright 2019 NXP
- * All rights reserved.
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-#ifndef _CLOCK_CONFIG_H_
-#define _CLOCK_CONFIG_H_
-
-#include "fsl_common.h"
-
-/*******************************************************************************
- * Definitions
- ******************************************************************************/
-#define BOARD_XTAL0_CLK_HZ 24000000U /*!< Board xtal0 frequency in Hz */
-
-#define BOARD_XTAL32K_CLK_HZ 32768U /*!< Board xtal32k frequency in Hz */
-/*******************************************************************************
- ************************ BOARD_InitBootClocks function ************************
- ******************************************************************************/
-
-#if defined(__cplusplus)
-extern "C" {
-#endif /* __cplusplus*/
-
-/*!
- * @brief This function executes default configuration of clocks.
- *
- */
-void BOARD_InitBootClocks(void);
-
-#if defined(__cplusplus)
-}
-#endif /* __cplusplus*/
-
-/*******************************************************************************
- ********************** Configuration BOARD_BootClockRUN ***********************
- ******************************************************************************/
-/*******************************************************************************
- * Definitions for BOARD_BootClockRUN configuration
- ******************************************************************************/
-#define BOARD_BOOTCLOCKRUN_CORE_CLOCK 500000000U /*!< Core clock frequency: 500000000Hz */
-
-/* Clock outputs (values are in Hz): */
-#define BOARD_BOOTCLOCKRUN_ADC_ALT_CLK 40000000UL
-#define BOARD_BOOTCLOCKRUN_CKIL_SYNC_CLK_ROOT 32768UL
-#define BOARD_BOOTCLOCKRUN_CLKO1_CLK 0UL
-#define BOARD_BOOTCLOCKRUN_CLKO2_CLK 0UL
-#define BOARD_BOOTCLOCKRUN_CLK_1M 1000000UL
-#define BOARD_BOOTCLOCKRUN_CLK_24M 24000000UL
-#define BOARD_BOOTCLOCKRUN_CORE_CLK_ROOT 500000000UL
-#define BOARD_BOOTCLOCKRUN_ENET_500M_REF_CLK 500000000UL
-#define BOARD_BOOTCLOCKRUN_FLEXIO1_CLK_ROOT 30000000UL
-#define BOARD_BOOTCLOCKRUN_FLEXSPI_CLK_ROOT 132000000UL
-#define BOARD_BOOTCLOCKRUN_GPT1_IPG_CLK_HIGHFREQ 62500000UL
-#define BOARD_BOOTCLOCKRUN_GPT2_IPG_CLK_HIGHFREQ 62500000UL
-#define BOARD_BOOTCLOCKRUN_IPG_CLK_ROOT 125000000UL
-#define BOARD_BOOTCLOCKRUN_LPI2C_CLK_ROOT 60000000UL
-#define BOARD_BOOTCLOCKRUN_LPSPI_CLK_ROOT 105600000UL
-#define BOARD_BOOTCLOCKRUN_MQS_MCLK 63529411UL
-#define BOARD_BOOTCLOCKRUN_PERCLK_CLK_ROOT 62500000UL
-#define BOARD_BOOTCLOCKRUN_SAI1_CLK_ROOT 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI1_MCLK1 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI1_MCLK2 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI1_MCLK3 30000000UL
-#define BOARD_BOOTCLOCKRUN_SAI3_CLK_ROOT 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI3_MCLK1 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI3_MCLK2 0UL
-#define BOARD_BOOTCLOCKRUN_SAI3_MCLK3 30000000UL
-#define BOARD_BOOTCLOCKRUN_SPDIF0_CLK_ROOT 30000000UL
-#define BOARD_BOOTCLOCKRUN_SPDIF0_EXTCLK_OUT 0UL
-#define BOARD_BOOTCLOCKRUN_TRACE_CLK_ROOT 117333333UL
-#define BOARD_BOOTCLOCKRUN_UART_CLK_ROOT 80000000UL
-#define BOARD_BOOTCLOCKRUN_USBPHY_CLK 0UL
-
-/*! @brief Usb1 PLL set for BOARD_BootClockRUN configuration.
- */
-extern const clock_usb_pll_config_t usb1PllConfig_BOARD_BootClockRUN;
-/*! @brief Sys PLL for BOARD_BootClockRUN configuration.
- */
-extern const clock_sys_pll_config_t sysPllConfig_BOARD_BootClockRUN;
-/*! @brief Enet PLL set for BOARD_BootClockRUN configuration.
- */
-extern const clock_enet_pll_config_t enetPllConfig_BOARD_BootClockRUN;
-
-/*******************************************************************************
- * API for BOARD_BootClockRUN configuration
- ******************************************************************************/
-#if defined(__cplusplus)
-extern "C" {
-#endif /* __cplusplus*/
-
-/*!
- * @brief This function executes configuration of clocks.
- *
- */
-void BOARD_BootClockRUN(void);
-
-#if defined(__cplusplus)
-}
-#endif /* __cplusplus*/
-
-#endif /* _CLOCK_CONFIG_H_ */
diff --git a/ports/mimxrt/boards/SEEED_ARCH_MIX/clock_config.h b/ports/mimxrt/boards/SEEED_ARCH_MIX/clock_config.h
deleted file mode 100644
index f213ac7e23..0000000000
--- a/ports/mimxrt/boards/SEEED_ARCH_MIX/clock_config.h
+++ /dev/null
@@ -1,119 +0,0 @@
-/*
- * Copyright 2017-2019 NXP
- * All rights reserved.
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-#ifndef _CLOCK_CONFIG_H_
-#define _CLOCK_CONFIG_H_
-
-#include "fsl_common.h"
-
-/*******************************************************************************
- * Definitions
- ******************************************************************************/
-#define BOARD_XTAL0_CLK_HZ 24000000U /*!< Board xtal0 frequency in Hz */
-
-#define BOARD_XTAL32K_CLK_HZ 32768U /*!< Board xtal32k frequency in Hz */
-/*******************************************************************************
- ************************ BOARD_InitBootClocks function ************************
- ******************************************************************************/
-
-#if defined(__cplusplus)
-extern "C" {
-#endif /* __cplusplus*/
-
-/*!
- * @brief This function executes default configuration of clocks.
- *
- */
-void BOARD_InitBootClocks(void);
-
-#if defined(__cplusplus)
-}
-#endif /* __cplusplus*/
-
-/*******************************************************************************
- ********************** Configuration BOARD_BootClockRUN ***********************
- ******************************************************************************/
-/*******************************************************************************
- * Definitions for BOARD_BootClockRUN configuration
- ******************************************************************************/
-#define BOARD_BOOTCLOCKRUN_CORE_CLOCK 600000000U /*!< Core clock frequency: 600000000Hz */
-
-/* Clock outputs (values are in Hz): */
-#define BOARD_BOOTCLOCKRUN_AHB_CLK_ROOT 600000000UL
-#define BOARD_BOOTCLOCKRUN_CAN_CLK_ROOT 40000000UL
-#define BOARD_BOOTCLOCKRUN_CKIL_SYNC_CLK_ROOT 32768UL
-#define BOARD_BOOTCLOCKRUN_CLKO1_CLK 0UL
-#define BOARD_BOOTCLOCKRUN_CLKO2_CLK 0UL
-#define BOARD_BOOTCLOCKRUN_CLK_1M 1000000UL
-#define BOARD_BOOTCLOCKRUN_CLK_24M 24000000UL
-#define BOARD_BOOTCLOCKRUN_CSI_CLK_ROOT 12000000UL
-#define BOARD_BOOTCLOCKRUN_ENET1_TX_CLK 2400000UL
-#define BOARD_BOOTCLOCKRUN_ENET_125M_CLK 2400000UL
-#define BOARD_BOOTCLOCKRUN_ENET_25M_REF_CLK 1200000UL
-#define BOARD_BOOTCLOCKRUN_FLEXIO1_CLK_ROOT 30000000UL
-#define BOARD_BOOTCLOCKRUN_FLEXIO2_CLK_ROOT 30000000UL
-#define BOARD_BOOTCLOCKRUN_FLEXSPI_CLK_ROOT 160000000UL
-#define BOARD_BOOTCLOCKRUN_GPT1_IPG_CLK_HIGHFREQ 75000000UL
-#define BOARD_BOOTCLOCKRUN_GPT2_IPG_CLK_HIGHFREQ 75000000UL
-#define BOARD_BOOTCLOCKRUN_IPG_CLK_ROOT 150000000UL
-#define BOARD_BOOTCLOCKRUN_LCDIF_CLK_ROOT 9642857UL
-#define BOARD_BOOTCLOCKRUN_LPI2C_CLK_ROOT 60000000UL
-#define BOARD_BOOTCLOCKRUN_LPSPI_CLK_ROOT 105600000UL
-#define BOARD_BOOTCLOCKRUN_LVDS1_CLK 1200000000UL
-#define BOARD_BOOTCLOCKRUN_MQS_MCLK 63529411UL
-#define BOARD_BOOTCLOCKRUN_PERCLK_CLK_ROOT 75000000UL
-#define BOARD_BOOTCLOCKRUN_PLL7_MAIN_CLK 24000000UL
-#define BOARD_BOOTCLOCKRUN_SAI1_CLK_ROOT 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI1_MCLK1 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI1_MCLK2 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI1_MCLK3 30000000UL
-#define BOARD_BOOTCLOCKRUN_SAI2_CLK_ROOT 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI2_MCLK1 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI2_MCLK2 0UL
-#define BOARD_BOOTCLOCKRUN_SAI2_MCLK3 30000000UL
-#define BOARD_BOOTCLOCKRUN_SAI3_CLK_ROOT 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI3_MCLK1 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI3_MCLK2 0UL
-#define BOARD_BOOTCLOCKRUN_SAI3_MCLK3 30000000UL
-#define BOARD_BOOTCLOCKRUN_SEMC_CLK_ROOT 75000000UL
-#define BOARD_BOOTCLOCKRUN_SPDIF0_CLK_ROOT 30000000UL
-#define BOARD_BOOTCLOCKRUN_SPDIF0_EXTCLK_OUT 0UL
-#define BOARD_BOOTCLOCKRUN_TRACE_CLK_ROOT 117333333UL
-#define BOARD_BOOTCLOCKRUN_UART_CLK_ROOT 80000000UL
-#define BOARD_BOOTCLOCKRUN_USBPHY1_CLK 0UL
-#define BOARD_BOOTCLOCKRUN_USBPHY2_CLK 0UL
-#define BOARD_BOOTCLOCKRUN_USDHC1_CLK_ROOT 198000000UL
-#define BOARD_BOOTCLOCKRUN_USDHC2_CLK_ROOT 198000000UL
-
-/*! @brief Arm PLL set for BOARD_BootClockRUN configuration.
- */
-extern const clock_arm_pll_config_t armPllConfig_BOARD_BootClockRUN;
-/*! @brief Usb1 PLL set for BOARD_BootClockRUN configuration.
- */
-extern const clock_usb_pll_config_t usb1PllConfig_BOARD_BootClockRUN;
-/*! @brief Sys PLL for BOARD_BootClockRUN configuration.
- */
-extern const clock_sys_pll_config_t sysPllConfig_BOARD_BootClockRUN;
-
-/*******************************************************************************
- * API for BOARD_BootClockRUN configuration
- ******************************************************************************/
-#if defined(__cplusplus)
-extern "C" {
-#endif /* __cplusplus*/
-
-/*!
- * @brief This function executes configuration of clocks.
- *
- */
-void BOARD_BootClockRUN(void);
-
-#if defined(__cplusplus)
-}
-#endif /* __cplusplus*/
-
-#endif /* _CLOCK_CONFIG_H_ */
diff --git a/ports/mimxrt/boards/TEENSY40/clock_config.h b/ports/mimxrt/boards/TEENSY40/clock_config.h
deleted file mode 100644
index 0822024847..0000000000
--- a/ports/mimxrt/boards/TEENSY40/clock_config.h
+++ /dev/null
@@ -1,122 +0,0 @@
-/*
- * Copyright 2018-2019 NXP
- * All rights reserved.
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-#ifndef _CLOCK_CONFIG_H_
-#define _CLOCK_CONFIG_H_
-
-#include "fsl_common.h"
-
-/*******************************************************************************
- * Definitions
- ******************************************************************************/
-#define BOARD_XTAL0_CLK_HZ 24000000U /*!< Board xtal0 frequency in Hz */
-
-#define BOARD_XTAL32K_CLK_HZ 32768U /*!< Board xtal32k frequency in Hz */
-/*******************************************************************************
- ************************ BOARD_InitBootClocks function ************************
- ******************************************************************************/
-
-#if defined(__cplusplus)
-extern "C" {
-#endif /* __cplusplus*/
-
-/*!
- * @brief This function executes default configuration of clocks.
- *
- */
-void BOARD_InitBootClocks(void);
-
-#if defined(__cplusplus)
-}
-#endif /* __cplusplus*/
-
-/*******************************************************************************
- ********************** Configuration BOARD_BootClockRUN ***********************
- ******************************************************************************/
-/*******************************************************************************
- * Definitions for BOARD_BootClockRUN configuration
- ******************************************************************************/
-#define BOARD_BOOTCLOCKRUN_CORE_CLOCK 600000000U /*!< Core clock frequency: 600000000Hz */
-
-/* Clock outputs (values are in Hz): */
-#define BOARD_BOOTCLOCKRUN_AHB_CLK_ROOT 600000000UL
-#define BOARD_BOOTCLOCKRUN_CAN_CLK_ROOT 40000000UL
-#define BOARD_BOOTCLOCKRUN_CKIL_SYNC_CLK_ROOT 32768UL
-#define BOARD_BOOTCLOCKRUN_CLKO1_CLK 0UL
-#define BOARD_BOOTCLOCKRUN_CLKO2_CLK 0UL
-#define BOARD_BOOTCLOCKRUN_CLK_1M 1000000UL
-#define BOARD_BOOTCLOCKRUN_CLK_24M 24000000UL
-#define BOARD_BOOTCLOCKRUN_CSI_CLK_ROOT 12000000UL
-#define BOARD_BOOTCLOCKRUN_ENET1_TX_CLK 2400000UL
-#define BOARD_BOOTCLOCKRUN_ENET2_125M_CLK 1200000UL
-#define BOARD_BOOTCLOCKRUN_ENET2_TX_CLK 1200000UL
-#define BOARD_BOOTCLOCKRUN_ENET_125M_CLK 2400000UL
-#define BOARD_BOOTCLOCKRUN_ENET_25M_REF_CLK 1200000UL
-#define BOARD_BOOTCLOCKRUN_FLEXIO1_CLK_ROOT 30000000UL
-#define BOARD_BOOTCLOCKRUN_FLEXIO2_CLK_ROOT 30000000UL
-#define BOARD_BOOTCLOCKRUN_FLEXSPI2_CLK_ROOT 130909090UL
-#define BOARD_BOOTCLOCKRUN_FLEXSPI_CLK_ROOT 130909090UL
-#define BOARD_BOOTCLOCKRUN_GPT1_IPG_CLK_HIGHFREQ 75000000UL
-#define BOARD_BOOTCLOCKRUN_GPT2_IPG_CLK_HIGHFREQ 75000000UL
-#define BOARD_BOOTCLOCKRUN_IPG_CLK_ROOT 150000000UL
-#define BOARD_BOOTCLOCKRUN_LCDIF_CLK_ROOT 9642857UL
-#define BOARD_BOOTCLOCKRUN_LPI2C_CLK_ROOT 60000000UL
-#define BOARD_BOOTCLOCKRUN_LPSPI_CLK_ROOT 105600000UL
-#define BOARD_BOOTCLOCKRUN_LVDS1_CLK 1200000000UL
-#define BOARD_BOOTCLOCKRUN_MQS_MCLK 63529411UL
-#define BOARD_BOOTCLOCKRUN_PERCLK_CLK_ROOT 75000000UL
-#define BOARD_BOOTCLOCKRUN_PLL7_MAIN_CLK 24000000UL
-#define BOARD_BOOTCLOCKRUN_SAI1_CLK_ROOT 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI1_MCLK1 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI1_MCLK2 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI1_MCLK3 30000000UL
-#define BOARD_BOOTCLOCKRUN_SAI2_CLK_ROOT 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI2_MCLK1 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI2_MCLK2 0UL
-#define BOARD_BOOTCLOCKRUN_SAI2_MCLK3 30000000UL
-#define BOARD_BOOTCLOCKRUN_SAI3_CLK_ROOT 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI3_MCLK1 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI3_MCLK2 0UL
-#define BOARD_BOOTCLOCKRUN_SAI3_MCLK3 30000000UL
-#define BOARD_BOOTCLOCKRUN_SEMC_CLK_ROOT 75000000UL
-#define BOARD_BOOTCLOCKRUN_SPDIF0_CLK_ROOT 30000000UL
-#define BOARD_BOOTCLOCKRUN_SPDIF0_EXTCLK_OUT 0UL
-#define BOARD_BOOTCLOCKRUN_TRACE_CLK_ROOT 117333333UL
-#define BOARD_BOOTCLOCKRUN_UART_CLK_ROOT 80000000UL
-#define BOARD_BOOTCLOCKRUN_USBPHY1_CLK 0UL
-#define BOARD_BOOTCLOCKRUN_USBPHY2_CLK 0UL
-#define BOARD_BOOTCLOCKRUN_USDHC1_CLK_ROOT 198000000UL
-#define BOARD_BOOTCLOCKRUN_USDHC2_CLK_ROOT 198000000UL
-
-/*! @brief Arm PLL set for BOARD_BootClockRUN configuration.
- */
-extern const clock_arm_pll_config_t armPllConfig_BOARD_BootClockRUN;
-/*! @brief Usb1 PLL set for BOARD_BootClockRUN configuration.
- */
-extern const clock_usb_pll_config_t usb1PllConfig_BOARD_BootClockRUN;
-/*! @brief Sys PLL for BOARD_BootClockRUN configuration.
- */
-extern const clock_sys_pll_config_t sysPllConfig_BOARD_BootClockRUN;
-
-/*******************************************************************************
- * API for BOARD_BootClockRUN configuration
- ******************************************************************************/
-#if defined(__cplusplus)
-extern "C" {
-#endif /* __cplusplus*/
-
-/*!
- * @brief This function executes configuration of clocks.
- *
- */
-void BOARD_BootClockRUN(void);
-
-#if defined(__cplusplus)
-}
-#endif /* __cplusplus*/
-
-#endif /* _CLOCK_CONFIG_H_ */
diff --git a/ports/mimxrt/boards/TEENSY41/clock_config.h b/ports/mimxrt/boards/TEENSY41/clock_config.h
deleted file mode 100644
index 0822024847..0000000000
--- a/ports/mimxrt/boards/TEENSY41/clock_config.h
+++ /dev/null
@@ -1,122 +0,0 @@
-/*
- * Copyright 2018-2019 NXP
- * All rights reserved.
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-#ifndef _CLOCK_CONFIG_H_
-#define _CLOCK_CONFIG_H_
-
-#include "fsl_common.h"
-
-/*******************************************************************************
- * Definitions
- ******************************************************************************/
-#define BOARD_XTAL0_CLK_HZ 24000000U /*!< Board xtal0 frequency in Hz */
-
-#define BOARD_XTAL32K_CLK_HZ 32768U /*!< Board xtal32k frequency in Hz */
-/*******************************************************************************
- ************************ BOARD_InitBootClocks function ************************
- ******************************************************************************/
-
-#if defined(__cplusplus)
-extern "C" {
-#endif /* __cplusplus*/
-
-/*!
- * @brief This function executes default configuration of clocks.
- *
- */
-void BOARD_InitBootClocks(void);
-
-#if defined(__cplusplus)
-}
-#endif /* __cplusplus*/
-
-/*******************************************************************************
- ********************** Configuration BOARD_BootClockRUN ***********************
- ******************************************************************************/
-/*******************************************************************************
- * Definitions for BOARD_BootClockRUN configuration
- ******************************************************************************/
-#define BOARD_BOOTCLOCKRUN_CORE_CLOCK 600000000U /*!< Core clock frequency: 600000000Hz */
-
-/* Clock outputs (values are in Hz): */
-#define BOARD_BOOTCLOCKRUN_AHB_CLK_ROOT 600000000UL
-#define BOARD_BOOTCLOCKRUN_CAN_CLK_ROOT 40000000UL
-#define BOARD_BOOTCLOCKRUN_CKIL_SYNC_CLK_ROOT 32768UL
-#define BOARD_BOOTCLOCKRUN_CLKO1_CLK 0UL
-#define BOARD_BOOTCLOCKRUN_CLKO2_CLK 0UL
-#define BOARD_BOOTCLOCKRUN_CLK_1M 1000000UL
-#define BOARD_BOOTCLOCKRUN_CLK_24M 24000000UL
-#define BOARD_BOOTCLOCKRUN_CSI_CLK_ROOT 12000000UL
-#define BOARD_BOOTCLOCKRUN_ENET1_TX_CLK 2400000UL
-#define BOARD_BOOTCLOCKRUN_ENET2_125M_CLK 1200000UL
-#define BOARD_BOOTCLOCKRUN_ENET2_TX_CLK 1200000UL
-#define BOARD_BOOTCLOCKRUN_ENET_125M_CLK 2400000UL
-#define BOARD_BOOTCLOCKRUN_ENET_25M_REF_CLK 1200000UL
-#define BOARD_BOOTCLOCKRUN_FLEXIO1_CLK_ROOT 30000000UL
-#define BOARD_BOOTCLOCKRUN_FLEXIO2_CLK_ROOT 30000000UL
-#define BOARD_BOOTCLOCKRUN_FLEXSPI2_CLK_ROOT 130909090UL
-#define BOARD_BOOTCLOCKRUN_FLEXSPI_CLK_ROOT 130909090UL
-#define BOARD_BOOTCLOCKRUN_GPT1_IPG_CLK_HIGHFREQ 75000000UL
-#define BOARD_BOOTCLOCKRUN_GPT2_IPG_CLK_HIGHFREQ 75000000UL
-#define BOARD_BOOTCLOCKRUN_IPG_CLK_ROOT 150000000UL
-#define BOARD_BOOTCLOCKRUN_LCDIF_CLK_ROOT 9642857UL
-#define BOARD_BOOTCLOCKRUN_LPI2C_CLK_ROOT 60000000UL
-#define BOARD_BOOTCLOCKRUN_LPSPI_CLK_ROOT 105600000UL
-#define BOARD_BOOTCLOCKRUN_LVDS1_CLK 1200000000UL
-#define BOARD_BOOTCLOCKRUN_MQS_MCLK 63529411UL
-#define BOARD_BOOTCLOCKRUN_PERCLK_CLK_ROOT 75000000UL
-#define BOARD_BOOTCLOCKRUN_PLL7_MAIN_CLK 24000000UL
-#define BOARD_BOOTCLOCKRUN_SAI1_CLK_ROOT 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI1_MCLK1 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI1_MCLK2 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI1_MCLK3 30000000UL
-#define BOARD_BOOTCLOCKRUN_SAI2_CLK_ROOT 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI2_MCLK1 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI2_MCLK2 0UL
-#define BOARD_BOOTCLOCKRUN_SAI2_MCLK3 30000000UL
-#define BOARD_BOOTCLOCKRUN_SAI3_CLK_ROOT 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI3_MCLK1 63529411UL
-#define BOARD_BOOTCLOCKRUN_SAI3_MCLK2 0UL
-#define BOARD_BOOTCLOCKRUN_SAI3_MCLK3 30000000UL
-#define BOARD_BOOTCLOCKRUN_SEMC_CLK_ROOT 75000000UL
-#define BOARD_BOOTCLOCKRUN_SPDIF0_CLK_ROOT 30000000UL
-#define BOARD_BOOTCLOCKRUN_SPDIF0_EXTCLK_OUT 0UL
-#define BOARD_BOOTCLOCKRUN_TRACE_CLK_ROOT 117333333UL
-#define BOARD_BOOTCLOCKRUN_UART_CLK_ROOT 80000000UL
-#define BOARD_BOOTCLOCKRUN_USBPHY1_CLK 0UL
-#define BOARD_BOOTCLOCKRUN_USBPHY2_CLK 0UL
-#define BOARD_BOOTCLOCKRUN_USDHC1_CLK_ROOT 198000000UL
-#define BOARD_BOOTCLOCKRUN_USDHC2_CLK_ROOT 198000000UL
-
-/*! @brief Arm PLL set for BOARD_BootClockRUN configuration.
- */
-extern const clock_arm_pll_config_t armPllConfig_BOARD_BootClockRUN;
-/*! @brief Usb1 PLL set for BOARD_BootClockRUN configuration.
- */
-extern const clock_usb_pll_config_t usb1PllConfig_BOARD_BootClockRUN;
-/*! @brief Sys PLL for BOARD_BootClockRUN configuration.
- */
-extern const clock_sys_pll_config_t sysPllConfig_BOARD_BootClockRUN;
-
-/*******************************************************************************
- * API for BOARD_BootClockRUN configuration
- ******************************************************************************/
-#if defined(__cplusplus)
-extern "C" {
-#endif /* __cplusplus*/
-
-/*!
- * @brief This function executes configuration of clocks.
- *
- */
-void BOARD_BootClockRUN(void);
-
-#if defined(__cplusplus)
-}
-#endif /* __cplusplus*/
-
-#endif /* _CLOCK_CONFIG_H_ */
diff --git a/ports/mimxrt/eth.c b/ports/mimxrt/eth.c
index 288aafb6b3..50e1cbb0fe 100644
--- a/ports/mimxrt/eth.c
+++ b/ports/mimxrt/eth.c
@@ -84,6 +84,11 @@ enet_buffer_config_t buffConfig[] = {{
                                          &g_txBuffDescrip[0],
                                          &g_rxDataBuff[0][0],
                                          &g_txDataBuff[0][0],
+                                         #if FSL_ENET_DRIVER_VERSION >= 0x020300
+                                         0,
+                                         0,
+                                         NULL
+                                         #endif
                                      }};
 
 static uint8_t hw_addr[6]; // The MAC address field
@@ -119,7 +124,6 @@ static const iomux_table_t iomux_table_enet[] = {
 #define TRACE_ETH_RX (0x0004)
 #define TRACE_ETH_FULL (0x0008)
 
-
 STATIC void eth_trace(eth_t *self, size_t len, const void *data, unsigned int flags) {
     if (((flags & NETUTILS_TRACE_IS_TX) && (self->trace_flags & TRACE_ETH_TX))
         || (!(flags & NETUTILS_TRACE_IS_TX) && (self->trace_flags & TRACE_ETH_RX))) {
@@ -156,7 +160,11 @@ STATIC void eth_process_frame(eth_t *self, uint8_t *buf, size_t length) {
     }
 }
 
-void eth_irq_handler(ENET_Type *base, enet_handle_t *handle, enet_event_t event, void *userData) {
+void eth_irq_handler(ENET_Type *base, enet_handle_t *handle,
+    #if FSL_FEATURE_ENET_QUEUE > 1
+    uint32_t ringId,
+    #endif /* FSL_FEATURE_ENET_QUEUE > 1 */
+    enet_event_t event, enet_frame_info_t *frameInfo, void *userData) {
     eth_t *self = (eth_t *)userData;
     uint8_t g_rx_frame[ENET_FRAME_MAX_FRAMELEN + 14];
     uint32_t length = 0;
@@ -164,13 +172,13 @@ void eth_irq_handler(ENET_Type *base, enet_handle_t *handle, enet_event_t event,
 
     if (event == kENET_RxEvent) {
         do {
-            status = ENET_GetRxFrameSize(handle, &length);
+            status = ENET_GetRxFrameSize(handle, &length, 0);
             if (status == kStatus_Success) {
                 // Get the data
-                ENET_ReadFrame(base, handle, g_rx_frame, length);
+                ENET_ReadFrame(base, handle, g_rx_frame, length, 0, NULL);
                 eth_process_frame(self, g_rx_frame, length);
             } else if (status == kStatus_ENET_RxFrameError) {
-                ENET_ReadFrame(base, handle, NULL, 0);
+                ENET_ReadFrame(base, handle, NULL, 0, 0, NULL);
             }
         } while (status != kStatus_ENET_RxFrameEmpty);
     } else {
@@ -320,7 +328,7 @@ STATIC err_t eth_send_frame_blocking(ENET_Type *base, enet_handle_t *handle, uin
 
     // Try a few times to send the frame
     for (i = XMIT_LOOP; i > 0; i--) {
-        status = ENET_SendFrame(base, handle, buffer, len);
+        status = ENET_SendFrame(base, handle, buffer, len, 0, false, NULL);
         if (status != kStatus_ENET_TxFrameBusy) {
             break;
         }
diff --git a/ports/mimxrt/hal/board.h b/ports/mimxrt/hal/board.h
index ce5e047976..1a611e10f9 100644
--- a/ports/mimxrt/hal/board.h
+++ b/ports/mimxrt/hal/board.h
@@ -27,7 +27,7 @@
 #ifndef MICROPY_INCLUDED_MIMXRT_BOARD_H
 #define MICROPY_INCLUDED_MIMXRT_BOARD_H
 
-#include "clock_config.h"
+#include CLOCK_CONFIG_H
 #include "fsl_common.h"
 
 #endif /* MICROPY_INCLUDED_MIMXRT_BOARD_H */
diff --git a/ports/mimxrt/hal/phy/mdio/enet/fsl_enet_mdio.c b/ports/mimxrt/hal/phy/mdio/enet/fsl_enet_mdio.c
index 8e679cd989..73f9788274 100644
--- a/ports/mimxrt/hal/phy/mdio/enet/fsl_enet_mdio.c
+++ b/ports/mimxrt/hal/phy/mdio/enet/fsl_enet_mdio.c
@@ -21,7 +21,7 @@ static status_t ENET_MDIO_Write(mdio_handle_t *handle, uint32_t phyAddr, uint32_
 static status_t ENET_MDIO_Read(mdio_handle_t *handle, uint32_t phyAddr, uint32_t devAddr, uint32_t *dataPtr);
 
 uint32_t ENET_GetInstance(ENET_Type *base);
-extern clock_ip_name_t s_enetClock[];
+extern const clock_ip_name_t s_enetClock[];
 
 /*******************************************************************************
  * Variables
diff --git a/ports/mimxrt/hal/pwm_backport.c b/ports/mimxrt/hal/pwm_backport.c
index a4663df4f1..018f8f6279 100644
--- a/ports/mimxrt/hal/pwm_backport.c
+++ b/ports/mimxrt/hal/pwm_backport.c
@@ -103,29 +103,6 @@ void PWM_SetupPwmx_u16(PWM_Type *base, pwm_submodule_t subModule,
     base->OUTEN |= (1U << subModule);
 }
 
-void PWM_SetupFaultDisableMap(PWM_Type *base, pwm_submodule_t subModule,
-    pwm_channels_t pwmChannel, pwm_fault_channels_t pwm_fault_channels, uint16_t value) {
-    uint16_t reg = base->SM[subModule].DISMAP[pwm_fault_channels];
-    switch (pwmChannel) {
-        case kPWM_PwmA:
-            reg &= ~((uint16_t)PWM_DISMAP_DIS0A_MASK);
-            reg |= (((uint16_t)(value) << (uint16_t)PWM_DISMAP_DIS0A_SHIFT) & (uint16_t)PWM_DISMAP_DIS0A_MASK);
-            break;
-        case kPWM_PwmB:
-            reg &= ~((uint16_t)PWM_DISMAP_DIS0B_MASK);
-            reg |= (((uint16_t)(value) << (uint16_t)PWM_DISMAP_DIS0B_SHIFT) & (uint16_t)PWM_DISMAP_DIS0B_MASK);
-            break;
-        case kPWM_PwmX:
-            reg &= ~((uint16_t)PWM_DISMAP_DIS0X_MASK);
-            reg |= (((uint16_t)(value) << (uint16_t)PWM_DISMAP_DIS0X_SHIFT) & (uint16_t)PWM_DISMAP_DIS0X_MASK);
-            break;
-        default:
-            assert(false);
-            break;
-    }
-    base->SM[subModule].DISMAP[pwm_fault_channels] = reg;
-}
-
 #ifdef FSL_FEATURE_SOC_TMR_COUNT
 status_t QTMR_SetupPwm_u16(TMR_Type *base, qtmr_channel_selection_t channel, uint32_t pwmFreqHz,
     uint16_t dutyCycleU16, bool outputPolarity, uint32_t srcClock_Hz, bool is_init) {
diff --git a/ports/mimxrt/hal/pwm_backport.h b/ports/mimxrt/hal/pwm_backport.h
index cd4bdb1f8e..516726961c 100644
--- a/ports/mimxrt/hal/pwm_backport.h
+++ b/ports/mimxrt/hal/pwm_backport.h
@@ -24,11 +24,6 @@ typedef struct _pwm_signal_param_u16
     uint16_t deadtimeValue;    // The deadtime value; only used if channel pair is operating in complementary mode
 } pwm_signal_param_u16_t;
 
-typedef enum _pwm_fault_channels {
-    kPWM_faultchannel_0 = 0U,
-    kPWM_faultchannel_1
-} pwm_fault_channels_t;
-
 #define PWM_FULL_SCALE  (65536UL)
 
 void PWM_UpdatePwmDutycycle_u16(PWM_Type *base, pwm_submodule_t subModule,
@@ -40,9 +35,6 @@ void PWM_SetupPwm_u16(PWM_Type *base, pwm_submodule_t subModule, pwm_signal_para
 void PWM_SetupPwmx_u16(PWM_Type *base, pwm_submodule_t subModule,
     uint32_t pwmFreq_Hz, uint16_t duty_cycle, uint8_t invert, uint32_t srcClock_Hz);
 
-void PWM_SetupFaultDisableMap(PWM_Type *base, pwm_submodule_t subModule,
-    pwm_channels_t pwmChannel, pwm_fault_channels_t pwm_fault_channels, uint16_t value);
-
 #ifdef FSL_FEATURE_SOC_TMR_COUNT
 status_t QTMR_SetupPwm_u16(TMR_Type *base, qtmr_channel_selection_t channel, uint32_t pwmFreqHz,
     uint16_t dutyCycleU16, bool outputPolarity, uint32_t srcClock_Hz, bool is_init);
diff --git a/ports/mimxrt/machine_i2c.c b/ports/mimxrt/machine_i2c.c
index a9a027ae23..c10fcaddbe 100644
--- a/ports/mimxrt/machine_i2c.c
+++ b/ports/mimxrt/machine_i2c.c
@@ -29,6 +29,7 @@
 #include "py/mperrno.h"
 #include "extmod/machine_i2c.h"
 #include "modmachine.h"
+#include CLOCK_CONFIG_H
 
 #include "fsl_iomuxc.h"
 #include "fsl_lpi2c.h"
@@ -100,8 +101,6 @@ mp_obj_t machine_i2c_make_new(const mp_obj_type_t *type, size_t n_args, size_t n
         { MP_QSTR_drive, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = DEFAULT_I2C_DRIVE} },
     };
 
-    static bool clk_init = true;
-
     // Parse args.
     mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
     mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
@@ -123,20 +122,13 @@ mp_obj_t machine_i2c_make_new(const mp_obj_type_t *type, size_t n_args, size_t n
         drive = DEFAULT_I2C_DRIVE;
     }
 
-    if (clk_init) {
-        clk_init = false;
-        // Set clock source for LPI2C
-        CLOCK_SetMux(kCLOCK_Lpi2cMux, LPI2C_CLOCK_SOURCE_SELECT); // USB1 PLL (480 MHz)
-        CLOCK_SetDiv(kCLOCK_Lpi2cDiv, LPI2C_CLOCK_SOURCE_DIVIDER);
-    }
-
     // Initialise the I2C peripheral if any arguments given, or it was not initialised previously.
     lpi2c_set_iomux(self->i2c_hw_id, drive);
     self->master_config = m_new_obj(lpi2c_master_config_t);
     LPI2C_MasterGetDefaultConfig(self->master_config);
     // Initialise the I2C peripheral.
     self->master_config->baudRate_Hz = args[ARG_freq].u_int;
-    LPI2C_MasterInit(self->i2c_inst, self->master_config, LPI2C_CLOCK_FREQUENCY);
+    LPI2C_MasterInit(self->i2c_inst, self->master_config, BOARD_BOOTCLOCKRUN_LPI2C_CLK_ROOT);
 
     return MP_OBJ_FROM_PTR(self);
 }
diff --git a/ports/mimxrt/machine_i2s.c b/ports/mimxrt/machine_i2s.c
index c80b60da43..11a203baea 100644
--- a/ports/mimxrt/machine_i2s.c
+++ b/ports/mimxrt/machine_i2s.c
@@ -40,7 +40,7 @@
 #include "modmachine.h"
 #include "dma_manager.h"
 
-#include "clock_config.h"
+#include CLOCK_CONFIG_H
 #include "fsl_iomuxc.h"
 #include "fsl_dmamux.h"
 #include "fsl_edma.h"
diff --git a/ports/mimxrt/machine_spi.c b/ports/mimxrt/machine_spi.c
index 2d01560d9a..805ed9a0ac 100644
--- a/ports/mimxrt/machine_spi.c
+++ b/ports/mimxrt/machine_spi.c
@@ -30,7 +30,7 @@
 #include "py/mperrno.h"
 #include "extmod/machine_spi.h"
 #include "modmachine.h"
-#include "dma_manager.h"
+#include CLOCK_CONFIG_H
 
 #include "fsl_cache.h"
 #include "fsl_dmamux.h"
@@ -45,8 +45,6 @@
 #define DEFAULT_SPI_FIRSTBIT    (kLPSPI_MsbFirst)
 #define DEFAULT_SPI_DRIVE       (6)
 
-#define CLOCK_DIVIDER           (1)
-
 #define MICROPY_HW_SPI_NUM MP_ARRAY_SIZE(spi_index_table)
 
 #define SCK (iomux_table[index])
@@ -79,9 +77,6 @@ static const iomux_table_t iomux_table[] = {
     IOMUX_TABLE_SPI
 };
 
-static uint16_t dma_req_src_rx[] = DMA_REQ_SRC_RX;
-static uint16_t dma_req_src_tx[] = DMA_REQ_SRC_TX;
-
 bool lpspi_set_iomux(int8_t spi, uint8_t drive, uint8_t cs) {
     int index = (spi - 1) * 5;
 
@@ -139,8 +134,6 @@ mp_obj_t machine_spi_make_new(const mp_obj_type_t *type, size_t n_args, size_t n
         { MP_QSTR_cs,       MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
     };
 
-    static bool clk_init = true;
-
     // Parse the arguments.
     mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
     mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
@@ -163,12 +156,6 @@ mp_obj_t machine_spi_make_new(const mp_obj_type_t *type, size_t n_args, size_t n
         drive = DEFAULT_SPI_DRIVE;
     }
 
-    if (clk_init) {
-        clk_init = false;
-        /*Set clock source for LPSPI*/
-        CLOCK_SetMux(kCLOCK_LpspiMux, 1);  // Clock source is kCLOCK_Usb1PllPfd1Clk
-        CLOCK_SetDiv(kCLOCK_LpspiDiv, CLOCK_DIVIDER);
-    }
     LPSPI_Reset(self->spi_inst);
     LPSPI_Enable(self->spi_inst, false);  // Disable first before new settings are applies
 
@@ -184,11 +171,13 @@ mp_obj_t machine_spi_make_new(const mp_obj_type_t *type, size_t n_args, size_t n
     if (args[ARG_gap_ns].u_int != -1) {
         self->master_config->betweenTransferDelayInNanoSec = args[ARG_gap_ns].u_int;
     }
+    self->master_config->lastSckToPcsDelayInNanoSec = self->master_config->betweenTransferDelayInNanoSec;
+    self->master_config->pcsToSckDelayInNanoSec = self->master_config->betweenTransferDelayInNanoSec;
     uint8_t cs = args[ARG_cs].u_int;
     if (cs <= 1) {
         self->master_config->whichPcs = cs;
     }
-    LPSPI_MasterInit(self->spi_inst, self->master_config, CLOCK_GetFreq(kCLOCK_Usb1PllPfd0Clk) / (CLOCK_DIVIDER + 1));
+    LPSPI_MasterInit(self->spi_inst, self->master_config, BOARD_BOOTCLOCKRUN_LPSPI_CLK_ROOT);
     lpspi_set_iomux(spi_index_table[spi_id], drive, cs);
 
     return MP_OBJ_FROM_PTR(self);
@@ -231,113 +220,26 @@ STATIC void machine_spi_init(mp_obj_base_t *self_in, size_t n_args, const mp_obj
     if (args[ARG_gap_ns].u_int != -1) {
         self->master_config->betweenTransferDelayInNanoSec = args[ARG_gap_ns].u_int;
     }
+    self->master_config->lastSckToPcsDelayInNanoSec = self->master_config->betweenTransferDelayInNanoSec;
+    self->master_config->pcsToSckDelayInNanoSec = self->master_config->betweenTransferDelayInNanoSec;
     LPSPI_Enable(self->spi_inst, false);  // Disable first before new settings are applies
-    LPSPI_MasterInit(self->spi_inst, self->master_config, CLOCK_GetFreq(kCLOCK_Usb1PllPfd0Clk) / (CLOCK_DIVIDER + 1));
-}
-
-void LPSPI_EDMAMasterCallback(LPSPI_Type *base, lpspi_master_edma_handle_t *handle, status_t status, void *self_in) {
-    machine_spi_obj_t *self = (machine_spi_obj_t *)self_in;
-    self->transfer_busy = false;
+    LPSPI_MasterInit(self->spi_inst, self->master_config, BOARD_BOOTCLOCKRUN_LPSPI_CLK_ROOT);
 }
 
 STATIC void machine_spi_transfer(mp_obj_base_t *self_in, size_t len, const uint8_t *src, uint8_t *dest) {
     machine_spi_obj_t *self = (machine_spi_obj_t *)self_in;
-    // Use DMA for large transfers if channels are available
-    const size_t dma_min_size_threshold = FSL_FEATURE_LPSPI_FIFO_SIZEn(0);  // The Macro argument is ignored
 
-    int chan_tx = -1;
-    int chan_rx = -1;
-    if (len >= dma_min_size_threshold) {
-        // Use two DMA channels to service the two FIFOs
-        chan_rx = allocate_dma_channel();
-        chan_tx = allocate_dma_channel();
-    }
-    bool use_dma = chan_rx >= 0 && chan_tx >= 0;
+    // Wait a short while for the previous transfer to finish, but not forever
+    for (volatile int j = 0; (j < 5000) && ((self->spi_inst->SR & kLPSPI_ModuleBusyFlag) != 0); j++) {}
 
-    if (use_dma) {
-        /* DMA MUX init*/
-        DMAMUX_Init(DMAMUX);
+    lpspi_transfer_t masterXfer;
+    masterXfer.txData = (uint8_t *)src;
+    masterXfer.rxData = (uint8_t *)dest;
+    masterXfer.dataSize = len;
+    masterXfer.configFlags = (self->master_config->whichPcs << LPSPI_MASTER_PCS_SHIFT) | kLPSPI_MasterPcsContinuous | kLPSPI_MasterByteSwap;
 
-        DMAMUX_SetSource(DMAMUX, chan_rx, dma_req_src_rx[self->spi_hw_id]); // ## SPIn source
-        DMAMUX_EnableChannel(DMAMUX, chan_rx);
-
-        DMAMUX_SetSource(DMAMUX, chan_tx, dma_req_src_tx[self->spi_hw_id]);
-        DMAMUX_EnableChannel(DMAMUX, chan_tx);
-
-        dma_init();
-
-        lpspi_master_edma_handle_t g_master_edma_handle;
-        edma_handle_t lpspiEdmaMasterRxRegToRxDataHandle;
-        edma_handle_t lpspiEdmaMasterTxDataToTxRegHandle;
-
-        // Set up lpspi EDMA master
-        EDMA_CreateHandle(&(lpspiEdmaMasterRxRegToRxDataHandle), DMA0, chan_rx);
-        EDMA_CreateHandle(&(lpspiEdmaMasterTxDataToTxRegHandle), DMA0, chan_tx);
-        LPSPI_MasterTransferCreateHandleEDMA(self->spi_inst, &g_master_edma_handle, LPSPI_EDMAMasterCallback, self,
-            &lpspiEdmaMasterRxRegToRxDataHandle,
-            &lpspiEdmaMasterTxDataToTxRegHandle);
-
-        // Wait a short while for a previous transfer to finish, but not forever
-        for (volatile int j = 0; (j < 5000) && ((LPSPI_GetStatusFlags(self->spi_inst) & kLPSPI_ModuleBusyFlag) != 0); j++) {}
-
-        // Start master transfer
-        lpspi_transfer_t masterXfer;
-        masterXfer.txData = (uint8_t *)src;
-        masterXfer.rxData = (uint8_t *)dest;
-        masterXfer.dataSize = len;
-        masterXfer.configFlags = (self->master_config->whichPcs << LPSPI_MASTER_PCS_SHIFT) | kLPSPI_MasterPcsContinuous | kLPSPI_MasterByteSwap;
-
-        // Reconfigure the TCR, required after switch between DMA vs. non-DMA
-        LPSPI_Enable(self->spi_inst, false);  // Disable first before new settings are applied
-        self->spi_inst->TCR = LPSPI_TCR_CPOL(self->master_config->cpol) | LPSPI_TCR_CPHA(self->master_config->cpha) |
-            LPSPI_TCR_LSBF(self->master_config->direction) | LPSPI_TCR_FRAMESZ(self->master_config->bitsPerFrame - 1) |
-            (self->spi_inst->TCR & LPSPI_TCR_PRESCALE_MASK) | LPSPI_TCR_PCS(self->master_config->whichPcs);
-        LPSPI_Enable(self->spi_inst, true);
-
-        self->transfer_busy = true;
-        if (dest) {
-            L1CACHE_DisableDCache();
-        } else if (src) {
-            DCACHE_CleanByRange((uint32_t)src, len);
-        }
-        if (LPSPI_MasterTransferEDMA(self->spi_inst, &g_master_edma_handle, &masterXfer) != kStatus_Success) {
-            L1CACHE_EnableDCache();
-            mp_raise_OSError(EIO);
-        } else {
-            while (self->transfer_busy) {
-                MICROPY_EVENT_POLL_HOOK
-            }
-            L1CACHE_EnableDCache();
-        }
-    }
-    // Release DMA channels, even if never allocated.
-    if (chan_rx >= 0) {
-        free_dma_channel(chan_rx);
-    }
-    if (chan_tx >= 0) {
-        free_dma_channel(chan_tx);
-    }
-
-    if (!use_dma) {
-        // Wait a short while for a previous transfer to finish, but not forever
-        for (volatile int j = 0; (j < 5000) && ((LPSPI_GetStatusFlags(self->spi_inst) & kLPSPI_ModuleBusyFlag) != 0); j++) {}
-
-        // Reconfigure the TCR, required after switch between DMA vs. non-DMA
-        LPSPI_Enable(self->spi_inst, false);  // Disable first before new settings are applied
-        self->spi_inst->TCR = LPSPI_TCR_CPOL(self->master_config->cpol) | LPSPI_TCR_CPHA(self->master_config->cpha) |
-            LPSPI_TCR_LSBF(self->master_config->direction) | LPSPI_TCR_FRAMESZ(self->master_config->bitsPerFrame - 1) |
-            (self->spi_inst->TCR & LPSPI_TCR_PRESCALE_MASK) | LPSPI_TCR_PCS(self->master_config->whichPcs);
-        LPSPI_Enable(self->spi_inst, true);
-
-        lpspi_transfer_t masterXfer;
-        masterXfer.txData = (uint8_t *)src;
-        masterXfer.rxData = (uint8_t *)dest;
-        masterXfer.dataSize = len;
-        masterXfer.configFlags = (self->master_config->whichPcs << LPSPI_MASTER_PCS_SHIFT) | kLPSPI_MasterPcsContinuous | kLPSPI_MasterByteSwap;
-
-        if (LPSPI_MasterTransferBlocking(self->spi_inst, &masterXfer) != kStatus_Success) {
-            mp_raise_OSError(EIO);
-        }
+    if (LPSPI_MasterTransferBlocking(self->spi_inst, &masterXfer) != kStatus_Success) {
+        mp_raise_OSError(EIO);
     }
 }
 
diff --git a/ports/mimxrt/machine_timer.c b/ports/mimxrt/machine_timer.c
index 334a020c15..c47d9dca24 100644
--- a/ports/mimxrt/machine_timer.c
+++ b/ports/mimxrt/machine_timer.c
@@ -30,13 +30,13 @@
 #include "py/mphal.h"
 #include "fsl_pit.h"
 #include "modmachine.h"
+#include CLOCK_CONFIG_H
 
 #define TIMER_MODE_ONE_SHOT (0)
 #define TIMER_MODE_PERIODIC (1)
 #define TIMER_MIN_PERIOD 1
 
 #define alarm_callback PIT_IRQHandler
-#define PIT_SOURCE_CLOCK CLOCK_GetIpgFreq()
 #define PIT_IRQ_ID PIT_IRQn
 
 typedef struct _machine_timer_obj_t {
@@ -115,7 +115,7 @@ STATIC mp_obj_t machine_timer_init_helper(machine_timer_obj_t *self, size_t n_ar
     self->callback = args[ARG_callback].u_obj;
 
     // Set timer period for channel id
-    PIT_SetTimerPeriod(PIT, self->channel, USEC_TO_COUNT(self->delta_us, PIT_SOURCE_CLOCK));
+    PIT_SetTimerPeriod(PIT, self->channel, USEC_TO_COUNT(self->delta_us, BOARD_BOOTCLOCKRUN_IPG_CLK_ROOT));
 
     // Enable timer interrupts for the channel
     PIT_EnableInterrupts(PIT, self->channel, kPIT_TimerInterruptEnable);
diff --git a/ports/mimxrt/machine_uart.c b/ports/mimxrt/machine_uart.c
index 69c1c1ed06..5b1f285d8d 100644
--- a/ports/mimxrt/machine_uart.c
+++ b/ports/mimxrt/machine_uart.c
@@ -32,6 +32,7 @@
 #include "fsl_common.h"
 #include "fsl_lpuart.h"
 #include "fsl_iomuxc.h"
+#include CLOCK_CONFIG_H
 
 #define DEFAULT_UART_BAUDRATE (115200)
 #define DEFAULT_BUFFER_SIZE (256)
@@ -96,18 +97,6 @@ bool lpuart_set_iomux(int8_t uart) {
     }
 }
 
-uint32_t UART_SrcFreq(void) {
-    uint32_t freq;
-    // To make it simple, we assume default PLL and divider settings, and the
-    // only variable from application is use PLL3 source or OSC source.
-    if (CLOCK_GetMux(kCLOCK_UartMux) == 0) { // PLL3 div6 80M
-        freq = (CLOCK_GetPllFreq(kCLOCK_PllUsb1) / 6U) / (CLOCK_GetDiv(kCLOCK_UartDiv) + 1U);
-    } else {
-        freq = CLOCK_GetOscFreq() / (CLOCK_GetDiv(kCLOCK_UartDiv) + 1U);
-    }
-    return freq;
-}
-
 void LPUART_UserCallback(LPUART_Type *base, lpuart_handle_t *handle, status_t status, void *userData) {
     machine_uart_obj_t *self = userData;
     if (kStatus_LPUART_TxIdle == status) {
@@ -232,7 +221,7 @@ STATIC mp_obj_t machine_uart_init_helper(machine_uart_obj_t *self, size_t n_args
             self->timeout_char = min_timeout_char;
         }
 
-        LPUART_Init(self->lpuart, &self->config, UART_SrcFreq()); // ??
+        LPUART_Init(self->lpuart, &self->config, BOARD_BOOTCLOCKRUN_UART_CLK_ROOT); // ??
         LPUART_TransferCreateHandle(self->lpuart, &self->handle,  LPUART_UserCallback, self);
         uint8_t *buffer = m_new(uint8_t, rxbuf_len + 1);
         LPUART_TransferStartRingBuffer(self->lpuart, &self->handle, buffer, rxbuf_len);
diff --git a/ports/mimxrt/sdcard.c b/ports/mimxrt/sdcard.c
index 31853b400e..20f76cc88f 100644
--- a/ports/mimxrt/sdcard.c
+++ b/ports/mimxrt/sdcard.c
@@ -29,6 +29,11 @@
 #include "sdcard.h"
 #include "ticks.h"
 #include "fsl_iomuxc.h"
+#include "pin.h"
+
+#if FSL_USDHC_DRIVER_VERSION == 0x020208
+#define USHDC_USE_TRANSFER_NONBLOCKING_10XX  (1)
+#endif
 
 #define SDCARD_VOLTAGE_WINDOW_SD                (0x80100000U)
 #define SDCARD_HIGH_CAPACITY                    (0x40000000U)
@@ -281,28 +286,55 @@ void sdcard_card_removed_callback(USDHC_Type *base, void *userData) {
     USDHC_ClearInterruptStatusFlags(base, kUSDHC_CardRemovalFlag);
 }
 
+#if USHDC_USE_TRANSFER_NONBLOCKING_10XX
+
 void sdcard_transfer_complete_callback(USDHC_Type *base, usdhc_handle_t *handle, status_t status, void *userData) {
     sdcard_transfer_status = status;
     sdcard_transfer_done = true;
     USDHC_ClearInterruptStatusFlags(base, kUSDHC_CommandCompleteFlag | kUSDHC_DataCompleteFlag);
 }
 
+#endif
+
 void sdcard_dummy_callback(USDHC_Type *base, void *userData) {
     return;
 }
 
+static void sdcard_error_recovery(USDHC_Type *base) {
+    uint32_t status = 0U;
+    /* get host present status */
+    status = USDHC_GetPresentStatusFlags(base);
+    /* check command inhibit status flag */
+    if ((status & (uint32_t)kUSDHC_CommandInhibitFlag) != 0U) {
+        /* reset command line */
+        (void)USDHC_Reset(base, kUSDHC_ResetCommand, 100U);
+    }
+    /* check data inhibit status flag */
+    if (((status & (uint32_t)kUSDHC_DataInhibitFlag) != 0U) || (USDHC_GetAdmaErrorStatusFlags(base) != 0U)) {
+        /* reset data line */
+        (void)USDHC_Reset(base, kUSDHC_ResetData, 100U);
+    }
+}
+
 static status_t sdcard_transfer_blocking(USDHC_Type *base, usdhc_handle_t *handle, usdhc_transfer_t *transfer, uint32_t timeout_ms) {
-    uint32_t retry_ctr = 0UL;
     status_t status;
 
     usdhc_adma_config_t dma_config;
 
     (void)memset(&dma_config, 0, sizeof(usdhc_adma_config_t));
     dma_config.dmaMode = kUSDHC_DmaModeAdma2;
+
+    #if !(defined(FSL_FEATURE_USDHC_HAS_NO_RW_BURST_LEN) && FSL_FEATURE_USDHC_HAS_NO_RW_BURST_LEN)
     dma_config.burstLen = kUSDHC_EnBurstLenForINCR;
+    #endif
+
     dma_config.admaTable = sdcard_adma_descriptor_table;
     dma_config.admaTableWords = DMA_DESCRIPTOR_BUFFER_SIZE;
 
+    #if USHDC_USE_TRANSFER_NONBLOCKING_10XX
+
+    uint32_t retry_ctr = 0UL;
+
     do {
         status = USDHC_TransferNonBlocking(base, handle, &dma_config, transfer);
         retry_ctr++;
@@ -318,8 +350,29 @@ static status_t sdcard_transfer_blocking(USDHC_Type *base, usdhc_handle_t *handl
         }
         return kStatus_Timeout;
     } else {
+        sdcard_error_recovery(base);
         return status;
     }
+
+    #else // USHDC_USE_TRANSFER_NONBLOCKING_10XX
+
+    // Wait while the card is busy before a transfer
+    status = kStatus_Timeout;
+    for (int i = 0; i < timeout_ms * 100; i++) {
+        // Wait until Data0 is low any more. Low indicates "Busy".
+        if ((transfer->data->txData == NULL) || (USDHC_GetPresentStatusFlags(base) & (uint32_t)kUSDHC_Data0LineLevelFlag) != 0) {
+            // Not busy anymore or no TX-Data
+            status = USDHC_TransferBlocking(base, &dma_config, transfer);
+            if (status != kStatus_Success) {
+                sdcard_error_recovery(base);
+            }
+            break;
+        }
+        ticks_delay_us64(10);
+    }
+    return status;
+
+    #endif // USHDC_USE_TRANSFER_NONBLOCKING_11XX
 }
 
 static void sdcard_decode_csd(mimxrt_sdcard_obj_t *card, csd_t *csd) {
@@ -670,6 +723,22 @@ static bool sdcard_reset(mimxrt_sdcard_obj_t *card) {
 }
 
 void sdcard_init(mimxrt_sdcard_obj_t *card, uint32_t base_clk) {
+    #ifdef MIMXRT117x_SERIES
+    clock_root_config_t rootCfg = {0};
+    /* SYS PLL2 528MHz. */
+    const clock_sys_pll2_config_t sysPll2Config = {
+        .ssEnable = false,
+    };
+
+    CLOCK_InitSysPll2(&sysPll2Config);
+    CLOCK_InitPfd(kCLOCK_PllSys2, kCLOCK_Pfd2, 24);
+
+    rootCfg.mux = 4;
+    rootCfg.div = 2;
+    CLOCK_SetRootClock(kCLOCK_Root_Usdhc1, &rootCfg);
+
+    #else
+
     // Configure PFD0 of PLL2 (system PLL) fractional divider to 24 resulting in:
     //  with PFD0_clk = PLL2_clk * 18 / N
     //       PFD0_clk = 528MHz   * 18 / 24 = 396MHz
@@ -687,6 +756,8 @@ void sdcard_init(mimxrt_sdcard_obj_t *card, uint32_t base_clk) {
     CLOCK_SetMux(kCLOCK_Usdhc2Mux, 1U);  // Select PFD0 as clock input for USDHC
     #endif
 
+    #endif // MIMXRT117x_SERIES
+
     // Initialize USDHC
     const usdhc_config_t config = {
         .endianMode = kUSDHC_EndianModeLittle,
@@ -699,6 +770,7 @@ void sdcard_init(mimxrt_sdcard_obj_t *card, uint32_t base_clk) {
     (void)sdcard_reset(card);
     card->base_clk = base_clk;
 
+    #if USHDC_USE_TRANSFER_NONBLOCKING_10XX
     usdhc_transfer_callback_t callbacks = {
         .CardInserted = sdcard_card_inserted_callback,
         .CardRemoved = sdcard_card_removed_callback,
@@ -709,6 +781,7 @@ void sdcard_init(mimxrt_sdcard_obj_t *card, uint32_t base_clk) {
     };
 
     USDHC_TransferCreateHandle(card->usdhc_inst, &card->handle, &callbacks, NULL);
+    #endif // USHDC_USE_TRANSFER_NONBLOCKING_10XX
 }
 
 void sdcard_deinit(mimxrt_sdcard_obj_t *card) {
@@ -979,6 +1052,8 @@ bool sdcard_power_off(mimxrt_sdcard_obj_t *card) {
 bool sdcard_detect(mimxrt_sdcard_obj_t *card) {
     bool detect = false;
 
+    #if USHDC_USE_TRANSFER_NONBLOCKING_10XX
+
     #if defined MICROPY_USDHC1 && USDHC1_AVAIL
     if ((card->usdhc_inst == USDHC1) && (sdcard_usdhc1_state.inserted == true)) {
         return true;
@@ -990,12 +1065,17 @@ bool sdcard_detect(mimxrt_sdcard_obj_t *card) {
     }
     #endif
 
+    #endif // USHDC_USE_TRANSFER_NONBLOCKING_10XX
+
     if (card->pins->cd_b.pin) {
         detect = USDHC_DetectCardInsert(card->usdhc_inst);
     } else {
         USDHC_CardDetectByData3(card->usdhc_inst, true);
         detect = (USDHC_GetPresentStatusFlags(card->usdhc_inst) & USDHC_PRES_STATE_DLSL(8)) != 0;
     }
+    /* enable card detect interrupt */
+    USDHC_EnableInterruptStatus(card->usdhc_inst, kUSDHC_CardInsertionFlag);
+    USDHC_EnableInterruptStatus(card->usdhc_inst, kUSDHC_CardRemovalFlag);
 
     // Update card state when detected via pin state
     #if defined MICROPY_USDHC1 && USDHC1_AVAIL