diff --git a/components/esp_hw_support/port/pau_regdma.c b/components/esp_hw_support/port/pau_regdma.c
index e0eac0162ac..0ff2a8e6cd2 100644
--- a/components/esp_hw_support/port/pau_regdma.c
+++ b/components/esp_hw_support/port/pau_regdma.c
@@ -88,18 +88,18 @@ void IRAM_ATTR pau_regdma_trigger_system_link_restore(void)
 }
 #endif
 
-void pau_regdma_set_extra_link_addr(void *link_addr)
+void IRAM_ATTR pau_regdma_set_extra_link_addr(void *link_addr)
 {
     pau_hal_set_regdma_extra_link_addr(PAU_instance()->hal, link_addr);
 }
 
-void pau_regdma_trigger_extra_link_backup(void)
+void IRAM_ATTR pau_regdma_trigger_extra_link_backup(void)
 {
     pau_hal_start_regdma_extra_link(PAU_instance()->hal, true);
     pau_hal_stop_regdma_extra_link(PAU_instance()->hal);
 }
 
-void pau_regdma_trigger_extra_link_restore(void)
+void IRAM_ATTR pau_regdma_trigger_extra_link_restore(void)
 {
     pau_hal_start_regdma_extra_link(PAU_instance()->hal, false);
     pau_hal_stop_regdma_extra_link(PAU_instance()->hal);
diff --git a/components/esp_hw_support/sleep_modem.c b/components/esp_hw_support/sleep_modem.c
index e04f6025073..97fafd65776 100644
--- a/components/esp_hw_support/sleep_modem.c
+++ b/components/esp_hw_support/sleep_modem.c
@@ -432,7 +432,7 @@ void sleep_modem_unregister_mac_bb_module_prepare_callback(mac_bb_power_down_cb_
  * @param cpu_freq_mhz cpu frequency to do retention
  * @param do_retention function for retention
  */
-static void rtc_clk_cpu_freq_to_pll_mhz_and_do_retention(bool backup, int cpu_freq_mhz, void (*do_retention)(bool))
+static void IRAM_ATTR rtc_clk_cpu_freq_to_pll_mhz_and_do_retention(bool backup, int cpu_freq_mhz, void (*do_retention)(bool))
 {
 #if SOC_PM_SUPPORT_PMU_MODEM_STATE
     if (pmu_sleep_pll_already_enabled()) {
diff --git a/components/esp_hw_support/sleep_retention.c b/components/esp_hw_support/sleep_retention.c
index 6c10e5b3267..744b9808635 100644
--- a/components/esp_hw_support/sleep_retention.c
+++ b/components/esp_hw_support/sleep_retention.c
@@ -499,7 +499,7 @@ uint32_t IRAM_ATTR sleep_retention_get_modules(void)
 }
 
 #if SOC_PM_RETENTION_HAS_CLOCK_BUG
-void sleep_retention_do_extra_retention(bool backup_or_restore)
+void IRAM_ATTR sleep_retention_do_extra_retention(bool backup_or_restore)
 {
     if (s_retention.highpri < SLEEP_RETENTION_REGDMA_LINK_HIGHEST_PRIORITY ||
         s_retention.highpri > SLEEP_RETENTION_REGDMA_LINK_LOWEST_PRIORITY) {