Merge branch 'bugfix/fix_wakeup_failed_if_powerdown_flash_in_lightsle…

…ep_v4.4' into 'release/v4.4'

Power Management: fixed flash funcs called in sleep wakeup process (backport v4.4)

See merge request espressif/esp-idf!24007

components/esp_hw_support/sleep_modes.c

@@ -297,15 +297,20 @@ 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)) {
             continue;
         }
 #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 {
@@ -315,17 +320,16 @@ 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;
     }
 }
 
@@ -375,11 +379,12 @@ static uint32_t IRAM_ATTR esp_sleep_start(uint32_t pd_flags)
     // For light sleep, suspend UART output — it will resume after wakeup.
     // For deep sleep, wait for the contents of UART FIFO to be sent.
     bool deep_sleep = pd_flags & RTC_SLEEP_PD_DIG;
+    uint32_t suspended_uarts_bmap = 0;
 
     if (deep_sleep) {
         flush_uarts();
     } else {
-        suspend_uarts();
+        suspended_uarts_bmap = suspend_uarts();
     }
 
 #if SOC_RTC_SLOW_CLOCK_SUPPORT_8MD256
@@ -564,7 +569,7 @@ static uint32_t IRAM_ATTR esp_sleep_start(uint32_t pd_flags)
     }
 
     // re-enable UART output
-    resume_uarts();
+    resume_uarts(suspended_uarts_bmap);
 
     return result;
 }