Merge branch 'bugfix/fix_wakeup_failed_if_powerdown_flash_in_lightsleep' into 'master'

Power Management: fixed flash funcs called in sleep wakeup process

See merge request espressif/esp-idf!23906

components/esp_hw_support/linker.lf

@@ -46,3 +46,5 @@ entries:
 
     if ADC_ONESHOT_CTRL_FUNC_IN_IRAM = y:
         sar_periph_ctrl (noflash)
+    else:
+        sar_periph_ctrl: sar_periph_ctrl_power_enable (noflash)

components/esp_hw_support/sleep_modes.c

@@ -395,8 +395,12 @@ static void IRAM_ATTR flush_uarts(void)
     }
 }
 
-static void IRAM_ATTR suspend_uarts(void)
+/**
+ * Suspend enabled uarts and return suspended uarts bit map
+ */
+static uint32_t IRAM_ATTR suspend_uarts(void)
 {
+    uint32_t suspended_uarts_bmap = 0;
     for (int i = 0; i < SOC_UART_NUM; ++i) {
 #ifndef CONFIG_IDF_TARGET_ESP32
         if (!periph_ll_periph_enabled(PERIPH_UART0_MODULE + i)) {
@@ -404,6 +408,7 @@ static void IRAM_ATTR suspend_uarts(void)
         }
 #endif
         uart_ll_force_xoff(i);
+        suspended_uarts_bmap |= BIT(i);
 #if SOC_UART_SUPPORT_FSM_TX_WAIT_SEND
         uint32_t uart_fsm = 0;
         do {
@@ -413,17 +418,16 @@ static void IRAM_ATTR suspend_uarts(void)
         while (uart_ll_get_fsm_status(i) != 0) {}
 #endif
     }
+    return suspended_uarts_bmap;
 }
 
-static void IRAM_ATTR resume_uarts(void)
+static void IRAM_ATTR resume_uarts(uint32_t uarts_resume_bmap)
 {
     for (int i = 0; i < SOC_UART_NUM; ++i) {
-#ifndef CONFIG_IDF_TARGET_ESP32
-        if (!periph_ll_periph_enabled(PERIPH_UART0_MODULE + i)) {
-            continue;
+        if (uarts_resume_bmap & 0x1) {
+            uart_ll_force_xon(i);
         }
-#endif
-        uart_ll_force_xon(i);
+        uarts_resume_bmap >>= 1;
     }
 }
 
@@ -488,6 +492,8 @@ static uint32_t IRAM_ATTR esp_sleep_start(uint32_t pd_flags, esp_sleep_mode_t mo
     // For deep sleep, wait for the contents of UART FIFO to be sent.
     bool deep_sleep = (mode == ESP_SLEEP_MODE_DEEP_SLEEP);
     bool should_skip_sleep = false;
+    uint32_t suspended_uarts_bmap = 0;
+
 
 #if SOC_RTC_SLOW_CLK_SUPPORT_RC_FAST_D256
     //Keep the RTC8M_CLK on if RTC clock is rc_fast_d256.
@@ -639,7 +645,7 @@ static uint32_t IRAM_ATTR esp_sleep_start(uint32_t pd_flags, esp_sleep_mode_t mo
         } else
 #endif
         {
-            suspend_uarts();
+            suspended_uarts_bmap = suspend_uarts();
         }
     }
 
@@ -730,7 +736,7 @@ static uint32_t IRAM_ATTR esp_sleep_start(uint32_t pd_flags, esp_sleep_mode_t mo
     }
 
     // re-enable UART output
-    resume_uarts();
+    resume_uarts(suspended_uarts_bmap);
     s_lightsleep_cnt++;
     return result;
 }