fix(esp_hw_support): set pau entry backup configuration with link update

Author: esp-wzh

components/esp_hw_support/port/esp32p4/pmu_sleep.c

@@ -247,19 +247,6 @@ void pmu_sleep_init(const pmu_sleep_config_t *config, bool dslp)
     }
     pmu_sleep_analog_init(PMU_instance(), &config->analog, dslp);
     pmu_sleep_param_init(PMU_instance(), &config->param, dslp);
-
-    // When light sleep (PD_TOP), the PAU will power down. so need use LP_SYS_BACKUP_DMA_CFG2_REG to store recover link address.
-    if (!dslp && PMU.hp_sys[PMU_MODE_HP_SLEEP].dig_power.top_pd_en) {
-        if (PMU.hp_sys[PMU_MODE_HP_SLEEP].backup.hp_active2sleep_backup_en ||
-            PMU.hp_sys[PMU_MODE_HP_ACTIVE].backup.hp_sleep2active_backup_en) {
-            uint32_t link_sel = PMU.hp_sys[PMU_MODE_HP_SLEEP].backup.hp_active2sleep_backup_mode & 0x3;
-            uint32_t link_addr = REG_READ(PAU_REGDMA_LINK_0_ADDR_REG + link_sel * 4);
-            lp_sys_ll_set_pau_link_addr(link_addr);
-            pmu_sleep_enable_regdma_backup();
-        }
-    } else {
-        pmu_sleep_disable_regdma_backup();
-    }
 }
 
 void pmu_sleep_increase_ldo_volt(void) {

components/hal/esp32p4/pau_hal.c

@@ -20,6 +20,10 @@ void pau_hal_set_regdma_entry_link_addr(pau_hal_context_t *hal, pau_regdma_link_
     pau_ll_set_regdma_link2_addr(hal->dev, (*link_addr)[2]);
     /* The link 3 of REGDMA is reserved, PMU state switching will not use
      * REGDMA link 3 */
+
+    // When light sleep (PD_TOP), the PAU will power down. so need use LP_SYS_BACKUP_DMA_CFG2_REG
+    // to store recover link address. We always use link0 as the default retention entry.
+    lp_sys_ll_set_pau_link_addr((uint32_t)(*link_addr)[0]);
 }
 
 void IRAM_ATTR pau_hal_start_regdma_modem_link(pau_hal_context_t *hal, bool backup_or_restore)