diff --git a/components/esp_hw_support/port/esp32h21/private_include/pmu_param.h b/components/esp_hw_support/port/esp32h21/private_include/pmu_param.h
index 582dbb8c1be..cb82c33fc15 100644
--- a/components/esp_hw_support/port/esp32h21/private_include/pmu_param.h
+++ b/components/esp_hw_support/port/esp32h21/private_include/pmu_param.h
@@ -287,11 +287,10 @@ typedef struct {
     } lp_sys[PMU_MODE_LP_MAX];
 } pmu_sleep_power_config_t;
 
-/* ESP32H21 ECO1 doesn't allow flash_ldo off or standby mode, todo PM-678 */
 #define PMU_SLEEP_POWER_CONFIG_DEFAULT(sleep_flags) {                       \
     .hp_sys = {                                                             \
         .dig_power = {                                                      \
-            .vdd_flash_mode = ((sleep_flags) & PMU_SLEEP_PD_VDDSDIO) ? 1 : 0, \
+            .vdd_flash_mode = ((sleep_flags) & PMU_SLEEP_PD_VDDSDIO) ? 1 : 3, \
             .wifi_pd_en     = ((sleep_flags) & PMU_SLEEP_PD_MODEM)  ? 1 : 0,\
             .cpu_pd_en      = ((sleep_flags) & PMU_SLEEP_PD_CPU)    ? 1 : 0,\
             .top_pd_en      = ((sleep_flags) & PMU_SLEEP_PD_TOP)    ? 1 : 0,\
@@ -549,7 +548,7 @@ typedef struct pmu_sleep_machine_constant {
     .lp = {                                     \
         .min_slp_time_us                = 450,  \
         .analog_wait_time_us            = 154,  \
-        .xtal_wait_stable_time_us       = 200,  \
+        .xtal_wait_stable_time_us       = 250,  \
         .clk_switch_cycle               = 1,    \
         .clk_power_on_wait_cycle        = 1,    \
         .isolate_wait_time_us           = 1,    \
@@ -559,14 +558,14 @@ typedef struct pmu_sleep_machine_constant {
     },                                          \
     .hp = {                                     \
         .min_slp_time_us                = 450,  \
-        .analog_wait_time_us            = 190,  \
+        .analog_wait_time_us            = 154,  \
         .isolate_wait_time_us           = 1,    \
         .reset_wait_time_us             = 1,    \
         .power_supply_wait_time_us      = 2,    \
         .power_up_wait_time_us          = 2,    \
         .regdma_s2a_work_time_us        = PMU_REGDMA_S2A_WORK_TIME_US, \
         .regdma_a2s_work_time_us        = PMU_REGDMA_A2S_WORK_TIME_US, \
-        .xtal_wait_stable_time_us       = 160,  \
+        .xtal_wait_stable_time_us       = 250,  \
         .pll_wait_stable_time_us        = 1     \
     }                                           \
 }
diff --git a/components/esp_hw_support/port/esp32h4/private_include/pmu_param.h b/components/esp_hw_support/port/esp32h4/private_include/pmu_param.h
index 0c9c327e06c..0df659b0985 100644
--- a/components/esp_hw_support/port/esp32h4/private_include/pmu_param.h
+++ b/components/esp_hw_support/port/esp32h4/private_include/pmu_param.h
@@ -526,8 +526,8 @@ typedef struct pmu_sleep_machine_constant {
     .lp = {                                     \
         .min_slp_time_us                = 450,  \
         .wakeup_wait_cycle              = 4,    \
-        .analog_wait_time_us            = 130,  \
-        .xtal_wait_stable_time_us       = 160,  \
+        .analog_wait_time_us            = 154,  \
+        .xtal_wait_stable_time_us       = 250,  \
         .clk_switch_cycle               = 1,    \
         .clk_power_on_wait_cycle        = 1,    \
         .isolate_wait_time_us           = 1,    \
@@ -539,7 +539,7 @@ typedef struct pmu_sleep_machine_constant {
         .min_slp_time_us                = 450,  \
         .clock_domain_sync_time_us      = 150,  \
         .system_dfs_up_work_time_us     = 124,  \
-        .analog_wait_time_us            = 190, \
+        .analog_wait_time_us            = 154,  \
         .isolate_wait_time_us           = 1,    \
         .reset_wait_time_us             = 1,    \
         .power_supply_wait_time_us      = 2,    \
@@ -550,7 +550,7 @@ typedef struct pmu_sleep_machine_constant {
         .regdma_a2s_work_time_us        = 265,  \
         .regdma_rf_on_work_time_us      = 70,   \
         .regdma_rf_off_work_time_us     = 23,   \
-        .xtal_wait_stable_time_us       = 160,  \
+        .xtal_wait_stable_time_us       = 250,  \
         .pll_wait_stable_time_us        = 1     \
     }                                           \
 }