kopia lustrzana https://github.com/espressif/esp-idf
168 wiersze
4.9 KiB
C
168 wiersze
4.9 KiB
C
/*
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* SPDX-FileCopyrightText: 2019-2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* System level MSPI APIs (private)
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*/
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/**
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* Currently the MSPI timing tuning related APIs are designed to be private.
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* Because:
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* 1. now we don't split SPI0 and SPI1, we don't have a component for SPI0, including PSRAM, Cache, etc..
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* 2. SPI0 and SPI1 are strongly coupling.
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*
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* In the future, we may consider creating a component for SPI0, and spi_flash component will only work on SPI1 (and it
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* can rely on SPI0). Therefore, we can put these APIs there.
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*
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*/
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#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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#include "sdkconfig.h"
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#include "esp_err.h"
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#if CONFIG_IDF_TARGET_ESP32
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#include "esp32/rom/spi_flash.h"
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#elif CONFIG_IDF_TARGET_ESP32S2
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#include "esp32s2/rom/spi_flash.h"
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#elif CONFIG_IDF_TARGET_ESP32C3
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#include "esp32c3/rom/spi_flash.h"
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#elif CONFIG_IDF_TARGET_ESP32S3
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#include "esp32s3/rom/spi_flash.h"
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#endif
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#include "esp_flash.h"
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#include "hal/spi_flash_hal.h"
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#include "soc/soc_caps.h"
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#include "spi_flash_override.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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// Type of MSPI IO
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typedef enum {
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ESP_MSPI_IO_CLK = 0,
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ESP_MSPI_IO_Q,
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ESP_MSPI_IO_D,
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ESP_MSPI_IO_CS0, /* cs for spi flash */
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ESP_MSPI_IO_HD,
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ESP_MSPI_IO_WP,
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#if SOC_SPI_MEM_SUPPORT_OPI_MODE
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ESP_MSPI_IO_DQS,
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ESP_MSPI_IO_D4,
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ESP_MSPI_IO_D5,
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ESP_MSPI_IO_D6,
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ESP_MSPI_IO_D7,
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#endif // SOC_SPI_MEM_SUPPORT_OPI_MODE
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#if CONFIG_SPIRAM
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ESP_MSPI_IO_CS1 /* cs for spi ram */
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#endif
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} esp_mspi_io_t;
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/**
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* @brief To setup Flash chip
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*/
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esp_err_t spi_flash_init_chip_state(void);
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/**
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* @brief Make MSPI work under 20Mhz, remove the timing tuning required delays.
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* @param control_spi1 Select whether to control SPI1. For tuning, we need to use SPI1. After tuning (during startup stage), let the flash driver to control SPI1
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*/
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void spi_timing_enter_mspi_low_speed_mode(bool control_spi1);
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/**
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* @brief Make MSPI work under the frequency as users set, may add certain delays to MSPI RX direction to meet timing requirements.
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* @param control_spi1 Select whether to control SPI1. For tuning, we need to use SPI1. After tuning (during startup stage), let the flash driver to control SPI1
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*/
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void spi_timing_enter_mspi_high_speed_mode(bool control_spi1);
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/**
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* @brief Switch MSPI into low speed mode / high speed mode.
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* @note This API is cache safe, it will freeze both D$ and I$ and restore them after MSPI is switched
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* @note For some of the MSPI high frequency settings (e.g. 80M DDR mode Flash or PSRAM), timing tuning is required.
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* Certain delays will be added to the MSPI RX direction. When CPU clock switches from PLL to XTAL, should call
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* this API first to enter MSPI low speed mode to remove the delays, and vice versa.
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*/
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void spi_timing_change_speed_mode_cache_safe(bool switch_down);
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/**
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* @brief Tune MSPI flash timing to make it work under high frequency
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*/
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void spi_timing_flash_tuning(void);
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/**
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* @brief Tune MSPI psram timing to make it work under high frequency
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*/
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void spi_timing_psram_tuning(void);
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/**
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* @brief To initislize the MSPI pins
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*/
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void esp_mspi_pin_init(void);
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/**
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* @brief Get the number of the GPIO corresponding to the given MSPI io
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*
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* @param[in] io MSPI io
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*
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* @return MSPI IO number
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*/
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uint8_t esp_mspi_get_io(esp_mspi_io_t io);
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/**
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* @brief Set SPI1 registers to make ROM functions work
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* @note This function is used for setting SPI1 registers to the state that ROM SPI functions work
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*/
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void spi_flash_set_rom_required_regs(void);
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/**
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* @brief Initialize main flash
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* @param chip Pointer to main SPI flash(SPI1 CS0) chip to use..
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*/
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esp_err_t esp_flash_init_main(esp_flash_t *chip);
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/**
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* @brief Should be only used by SPI1 Flash driver to know the necessary timing registers
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* @param out_timing_config Pointer to timing_tuning parameters.
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*/
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void spi_timing_get_flash_timing_param(spi_flash_hal_timing_config_t *out_timing_config);
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/**
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* @brief Get the knowledge if the MSPI timing is tuned or not
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*/
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bool spi_timing_is_tuned(void);
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/**
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* @brief Set Flash chip specifically required MSPI register settings here
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*/
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void spi_flash_set_vendor_required_regs(void);
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/**
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* @brief Enable SPI flash high performance mode.
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*
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* @return ESP_OK if success.
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*/
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esp_err_t spi_flash_enable_high_performance_mode(void);
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/**
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* @brief Get the flash dummy through this function
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* This can be used when one flash has several dummy configurations to enable the high performance mode.
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* @note Don't forget to subtract one when assign to the register of mspi e.g. if the value you get is 4, (4-1=3) should be assigned to the register.
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*
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* @return Pointer to spi_flash_hpm_dummy_conf_t.
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*/
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const spi_flash_hpm_dummy_conf_t *spi_flash_hpm_get_dummy(void);
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/**
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* @brief Used to judge whether flash works under HPM mode with dummy adjustment.
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*
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* @return true Yes, and work under HPM with adjusting dummy. Otherwise, false.
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*/
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bool spi_flash_hpm_dummy_adjust(void);
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#ifdef __cplusplus
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}
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#endif
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