diff --git a/components/hal/esp32c6/pau_hal.c b/components/hal/esp32c6/pau_hal.c
index 1000b66a2c..53be6120c3 100644
--- a/components/hal/esp32c6/pau_hal.c
+++ b/components/hal/esp32c6/pau_hal.c
@@ -20,7 +20,7 @@ void pau_hal_set_regdma_entry_link_addr(pau_hal_context_t *hal, pau_regdma_link_
      * REGDMA link 3 */
 }
 
-void pau_hal_start_regdma_modem_link(pau_hal_context_t *hal, bool backup_or_restore)
+void IRAM_ATTR pau_hal_start_regdma_modem_link(pau_hal_context_t *hal, bool backup_or_restore)
 {
     pau_ll_clear_regdma_backup_done_intr_state(hal->dev);
     pau_ll_set_regdma_select_wifimac_link(hal->dev);
@@ -30,14 +30,14 @@ void pau_hal_start_regdma_modem_link(pau_hal_context_t *hal, bool backup_or_rest
     while (!(pau_ll_get_regdma_intr_raw_signal(hal->dev) & PAU_DONE_INT_RAW));
 }
 
-void pau_hal_stop_regdma_modem_link(pau_hal_context_t *hal)
+void IRAM_ATTR pau_hal_stop_regdma_modem_link(pau_hal_context_t *hal)
 {
     pau_ll_set_regdma_wifimac_link_backup_start_disable(hal->dev);
     pau_ll_set_regdma_deselect_wifimac_link(hal->dev);
     pau_ll_clear_regdma_backup_done_intr_state(hal->dev);
 }
 
-void pau_hal_start_regdma_extra_link(pau_hal_context_t *hal, bool backup_or_restore)
+void IRAM_ATTR pau_hal_start_regdma_extra_link(pau_hal_context_t *hal, bool backup_or_restore)
 {
     pau_ll_clear_regdma_backup_done_intr_state(hal->dev);
     /* The link 3 of REGDMA is reserved, we use it as an extra linked list to
@@ -50,7 +50,7 @@ void pau_hal_start_regdma_extra_link(pau_hal_context_t *hal, bool backup_or_rest
     while (!(pau_ll_get_regdma_intr_raw_signal(hal->dev) & PAU_DONE_INT_RAW));
 }
 
-void pau_hal_stop_regdma_extra_link(pau_hal_context_t *hal)
+void IRAM_ATTR pau_hal_stop_regdma_extra_link(pau_hal_context_t *hal)
 {
     pau_ll_set_regdma_entry_link_backup_start_disable(hal->dev);
     pau_ll_select_regdma_entry_link(hal->dev, 0); /* restore link select to default */
diff --git a/components/hal/esp32h2/pau_hal.c b/components/hal/esp32h2/pau_hal.c
index cbfecc77e6..59f13e633e 100644
--- a/components/hal/esp32h2/pau_hal.c
+++ b/components/hal/esp32h2/pau_hal.c
@@ -40,26 +40,6 @@ void IRAM_ATTR pau_hal_stop_regdma_system_link(pau_hal_context_t *hal)
     pau_ll_clear_regdma_backup_done_intr_state(hal->dev);
 }
 
-void pau_hal_start_regdma_extra_link(pau_hal_context_t *hal, bool backup_or_restore)
-{
-    pau_ll_clear_regdma_backup_done_intr_state(hal->dev);
-    /* The link 3 of REGDMA is reserved, we use it as an extra linked list to
-     * provide backup and restore services for BLE, IEEE802.15.4 and possibly
-     * other modules */
-    pau_ll_select_regdma_entry_link(hal->dev, 3);
-    pau_ll_set_regdma_entry_link_backup_direction(hal->dev, backup_or_restore);
-    pau_ll_set_regdma_entry_link_backup_start_enable(hal->dev);
-
-    while (!(pau_ll_get_regdma_intr_raw_signal(hal->dev) & PAU_DONE_INT_RAW));
-}
-
-void pau_hal_stop_regdma_extra_link(pau_hal_context_t *hal)
-{
-    pau_ll_set_regdma_entry_link_backup_start_disable(hal->dev);
-    pau_ll_select_regdma_entry_link(hal->dev, 0); /* restore link select to default */
-    pau_ll_clear_regdma_backup_done_intr_state(hal->dev);
-}
-
 void IRAM_ATTR pau_hal_regdma_clock_configure(pau_hal_context_t *hal, bool enable)
 {
     HAL_FORCE_MODIFY_U32_REG_FIELD(PCR.regdma_conf, regdma_rst_en, !enable);