diff --git a/components/esp_hw_support/include/esp_private/esp_pmu.h b/components/esp_hw_support/include/esp_private/esp_pmu.h
index 88c2c44b7b..c63b7d1486 100644
--- a/components/esp_hw_support/include/esp_private/esp_pmu.h
+++ b/components/esp_hw_support/include/esp_private/esp_pmu.h
@@ -12,6 +12,7 @@
 #include <stdlib.h>
 
 #include "soc/soc_caps.h"
+#include "soc/clk_tree_defs.h"
 
 #if SOC_PMU_SUPPORTED
 #include "hal/pmu_hal.h"
@@ -228,12 +229,13 @@ uint32_t pmu_sleep_calculate_hp_hw_wait_time(uint32_t sleep_flags, uint32_t slow
  * @brief Calculate the hardware time overhead during sleep to compensate for sleep time
  *
  * @param sleep_flags flags indicates the power domain that will be powered down and the sleep submode
+ * @param slowclk_src slow clock source of pmu
  * @param slowclk_period re-calibrated slow clock period
  * @param fastclk_period re-calibrated fast clock period
  *
  * @return hardware time overhead in us
  */
-uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, uint32_t slowclk_period, uint32_t fastclk_period);
+uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, soc_rtc_slow_clk_src_t slowclk_src, uint32_t slowclk_period, uint32_t fastclk_period);
 
 /**
  * @brief Get default sleep configuration
@@ -241,6 +243,7 @@ uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, uint32_t slowclk
  * @param sleep_flags flags indicates the power domain that will be powered down and the sleep submode
  * @param clk_flags indicates the clock ICG cell that will be ungated
  * @param adjustment total software and hardware time overhead
+ * @param slowclk_src slow clock source of pmu
  * @param slowclk_period re-calibrated slow clock period in microseconds,
  *                       Q13.19 fixed point format
  * @param fastclk_period re-calibrated fast clock period in microseconds,
@@ -249,7 +252,7 @@ uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, uint32_t slowclk
 
  * @return hardware time overhead in us
  */
-const pmu_sleep_config_t* pmu_sleep_config_default(pmu_sleep_config_t *config, uint32_t sleep_flags, uint32_t clk_flags, uint32_t adjustment, uint32_t slowclk_period, uint32_t fastclk_period, bool dslp);
+const pmu_sleep_config_t* pmu_sleep_config_default(pmu_sleep_config_t *config, uint32_t sleep_flags, uint32_t clk_flags, uint32_t adjustment, soc_rtc_slow_clk_src_t slowclk_src, uint32_t slowclk_period, uint32_t fastclk_period, bool dslp);
 
 /**
  * @brief Prepare the chip to enter sleep mode
diff --git a/components/esp_hw_support/port/esp32c5/pmu_sleep.c b/components/esp_hw_support/port/esp32c5/pmu_sleep.c
index 493e5ff157..bd829132da 100644
--- a/components/esp_hw_support/port/esp32c5/pmu_sleep.c
+++ b/components/esp_hw_support/port/esp32c5/pmu_sleep.c
@@ -51,7 +51,7 @@ void pmu_sleep_disable_regdma_backup(void)
     }
 }
 
-uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, uint32_t slowclk_period, uint32_t fastclk_period)
+uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, soc_rtc_slow_clk_src_t slowclk_src, uint32_t slowclk_period, uint32_t fastclk_period)
 {
     const pmu_sleep_machine_constant_t *mc = (pmu_sleep_machine_constant_t *)PMU_instance()->mc;
 
@@ -98,8 +98,20 @@ uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, uint32_t slowclk
      *                     |                           wake-up delay                          |
      */
 #if SOC_PM_SUPPORT_PMU_MODEM_STATE && CONFIG_ESP_WIFI_ENHANCED_LIGHT_SLEEP
+    int min_slp_time_adjustment_us = 0;
+#if SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED
+    if (slowclk_src == SOC_RTC_SLOW_CLK_SRC_RC_SLOW) {
+        const uint32_t slowclk_period_fixed = rtc_clk_freq_to_period(SOC_CLK_RC_SLOW_FREQ_APPROX);
+        const int min_slp_cycle_fixed = rtc_time_us_to_slowclk(mc->hp.min_slp_time_us, slowclk_period_fixed);
+        const int min_slp_cycle_calib = rtc_time_us_to_slowclk(mc->hp.min_slp_time_us, slowclk_period);
+        const int min_slp_cycle_diff = (min_slp_cycle_calib > min_slp_cycle_fixed) ? \
+                       (min_slp_cycle_calib - min_slp_cycle_fixed) : (min_slp_cycle_fixed - min_slp_cycle_calib);
+        const int min_slp_time_diff = rtc_time_slowclk_to_us(min_slp_cycle_diff, slowclk_period_fixed);
+        min_slp_time_adjustment_us = (min_slp_cycle_calib > min_slp_cycle_fixed) ? min_slp_time_diff : -min_slp_time_diff;
+    }
+#endif
     const int rf_on_protect_time_us = mc->hp.regdma_rf_on_work_time_us;
-    const int total_hw_wait_time_us = lp_hw_wait_time_us + hp_hw_wait_time_us + mc->hp.clock_domain_sync_time_us;
+    const int total_hw_wait_time_us = lp_hw_wait_time_us + hp_hw_wait_time_us + mc->hp.clock_domain_sync_time_us + min_slp_time_adjustment_us;
 #else
     const int rf_on_protect_time_us = 0;
     const int total_hw_wait_time_us = lp_hw_wait_time_us + hp_hw_wait_time_us;
@@ -114,13 +126,20 @@ static inline pmu_sleep_param_config_t * pmu_sleep_param_config_default(
         pmu_sleep_power_config_t *power, /* We'll use the runtime power parameter to determine some hardware parameters */
         const uint32_t sleep_flags,
         const uint32_t adjustment,
+        soc_rtc_slow_clk_src_t slowclk_src,
         const uint32_t slowclk_period,
         const uint32_t fastclk_period
     )
 {
     const pmu_sleep_machine_constant_t *mc = (pmu_sleep_machine_constant_t *)PMU_instance()->mc;
 
-    param->hp_sys.min_slp_slow_clk_cycle          = rtc_time_us_to_slowclk(mc->hp.min_slp_time_us, slowclk_period);
+#if (SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED && SOC_PM_SUPPORT_PMU_MODEM_STATE && CONFIG_ESP_WIFI_ENHANCED_LIGHT_SLEEP)
+    const uint32_t slowclk_period_fixed = (slowclk_src == SOC_RTC_SLOW_CLK_SRC_RC_SLOW) ? rtc_clk_freq_to_period(SOC_CLK_RC_SLOW_FREQ_APPROX) : slowclk_period;
+#else
+    const uint32_t slowclk_period_fixed = slowclk_period;
+#endif
+
+    param->hp_sys.min_slp_slow_clk_cycle          = rtc_time_us_to_slowclk(mc->hp.min_slp_time_us, slowclk_period_fixed);
     param->hp_sys.analog_wait_target_cycle        = rtc_time_us_to_fastclk(mc->hp.analog_wait_time_us, fastclk_period);
     param->hp_sys.digital_power_supply_wait_cycle = rtc_time_us_to_fastclk(mc->hp.power_supply_wait_time_us, fastclk_period);
     param->hp_sys.digital_power_up_wait_cycle     = rtc_time_us_to_fastclk(mc->hp.power_up_wait_time_us, fastclk_period);
@@ -128,12 +147,12 @@ static inline pmu_sleep_param_config_t * pmu_sleep_param_config_default(
     param->hp_sys.isolate_wait_cycle              = rtc_time_us_to_fastclk(mc->hp.isolate_wait_time_us, fastclk_period);
     param->hp_sys.reset_wait_cycle                = rtc_time_us_to_fastclk(mc->hp.reset_wait_time_us, fastclk_period);
 
-    const int hw_wait_time_us = pmu_sleep_calculate_hw_wait_time(sleep_flags, slowclk_period, fastclk_period);
+    const int hw_wait_time_us = pmu_sleep_calculate_hw_wait_time(sleep_flags, slowclk_src, slowclk_period, fastclk_period);
     const int modem_state_skip_time_us = mc->hp.regdma_m2a_work_time_us + mc->hp.system_dfs_up_work_time_us + mc->lp.min_slp_time_us;
     const int modem_wakeup_wait_time_us = adjustment - hw_wait_time_us + modem_state_skip_time_us + mc->hp.regdma_rf_on_work_time_us;
     param->hp_sys.modem_wakeup_wait_cycle         = rtc_time_us_to_fastclk(modem_wakeup_wait_time_us, fastclk_period);
 
-    param->lp_sys.min_slp_slow_clk_cycle          = rtc_time_us_to_slowclk(mc->lp.min_slp_time_us, slowclk_period);
+    param->lp_sys.min_slp_slow_clk_cycle          = rtc_time_us_to_slowclk(mc->lp.min_slp_time_us, slowclk_period_fixed);
     param->lp_sys.analog_wait_target_cycle        = rtc_time_us_to_slowclk(mc->lp.analog_wait_time_us, slowclk_period);
     param->lp_sys.digital_power_supply_wait_cycle = rtc_time_us_to_fastclk(mc->lp.power_supply_wait_time_us, fastclk_period);
     param->lp_sys.digital_power_up_wait_cycle     = rtc_time_us_to_fastclk(mc->lp.power_up_wait_time_us, fastclk_period);
@@ -153,6 +172,7 @@ const pmu_sleep_config_t* pmu_sleep_config_default(
         uint32_t sleep_flags,
         uint32_t clk_flags,
         uint32_t adjustment,
+        soc_rtc_slow_clk_src_t slowclk_src,
         uint32_t slowclk_period,
         uint32_t fastclk_period,
         bool dslp
@@ -162,7 +182,7 @@ const pmu_sleep_config_t* pmu_sleep_config_default(
     config->power = power_default;
 
     pmu_sleep_param_config_t param_default = PMU_SLEEP_PARAM_CONFIG_DEFAULT(sleep_flags);
-    config->param = *pmu_sleep_param_config_default(&param_default, &power_default, sleep_flags, adjustment, slowclk_period, fastclk_period);
+    config->param = *pmu_sleep_param_config_default(&param_default, &power_default, sleep_flags, adjustment, slowclk_src, slowclk_period, fastclk_period);
 
     if (dslp) {
         config->param.lp_sys.analog_wait_target_cycle  = rtc_time_us_to_slowclk(PMU_LP_ANALOG_WAIT_TARGET_TIME_DSLP_US, slowclk_period);
diff --git a/components/esp_hw_support/port/esp32c6/pmu_sleep.c b/components/esp_hw_support/port/esp32c6/pmu_sleep.c
index d767463331..357a6962df 100644
--- a/components/esp_hw_support/port/esp32c6/pmu_sleep.c
+++ b/components/esp_hw_support/port/esp32c6/pmu_sleep.c
@@ -105,7 +105,7 @@ void pmu_sleep_disable_regdma_backup(void)
     }
 }
 
-uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, uint32_t slowclk_period, uint32_t fastclk_period)
+uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, soc_rtc_slow_clk_src_t slowclk_src, uint32_t slowclk_period, uint32_t fastclk_period)
 {
     const pmu_sleep_machine_constant_t *mc = (pmu_sleep_machine_constant_t *)PMU_instance()->mc;
 
@@ -150,8 +150,20 @@ uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, uint32_t slowclk
      *                     |                           wake-up delay                          |
      */
 #if SOC_PM_SUPPORT_PMU_MODEM_STATE && CONFIG_ESP_WIFI_ENHANCED_LIGHT_SLEEP
+    int min_slp_time_adjustment_us = 0;
+#if SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED
+    if (slowclk_src == SOC_RTC_SLOW_CLK_SRC_RC_SLOW) {
+        const uint32_t slowclk_period_fixed = rtc_clk_freq_to_period(SOC_CLK_RC_SLOW_FREQ_APPROX);
+        const int min_slp_cycle_fixed = rtc_time_us_to_slowclk(mc->hp.min_slp_time_us, slowclk_period_fixed);
+        const int min_slp_cycle_calib = rtc_time_us_to_slowclk(mc->hp.min_slp_time_us, slowclk_period);
+        const int min_slp_cycle_diff = (min_slp_cycle_calib > min_slp_cycle_fixed) ? \
+                       (min_slp_cycle_calib - min_slp_cycle_fixed) : (min_slp_cycle_fixed - min_slp_cycle_calib);
+        const int min_slp_time_diff = rtc_time_slowclk_to_us(min_slp_cycle_diff, slowclk_period_fixed);
+        min_slp_time_adjustment_us = (min_slp_cycle_calib > min_slp_cycle_fixed) ? min_slp_time_diff : -min_slp_time_diff;
+    }
+#endif
     const int rf_on_protect_time_us = mc->hp.regdma_rf_on_work_time_us;
-    const int total_hw_wait_time_us = lp_hw_wait_time_us + hp_hw_wait_time_us + mc->hp.clock_domain_sync_time_us;
+    const int total_hw_wait_time_us = lp_hw_wait_time_us + hp_hw_wait_time_us + mc->hp.clock_domain_sync_time_us + min_slp_time_adjustment_us;
 #else
     const int rf_on_protect_time_us = 0;
     const int total_hw_wait_time_us = lp_hw_wait_time_us + hp_hw_wait_time_us;
@@ -166,24 +178,31 @@ static inline pmu_sleep_param_config_t * pmu_sleep_param_config_default(
         pmu_sleep_power_config_t *power, /* We'll use the runtime power parameter to determine some hardware parameters */
         const uint32_t sleep_flags,
         const uint32_t adjustment,
+        soc_rtc_slow_clk_src_t slowclk_src,
         const uint32_t slowclk_period,
         const uint32_t fastclk_period
     )
 {
     const pmu_sleep_machine_constant_t *mc = (pmu_sleep_machine_constant_t *)PMU_instance()->mc;
 
-    param->hp_sys.min_slp_slow_clk_cycle          = rtc_time_us_to_slowclk(mc->hp.min_slp_time_us, slowclk_period);
+#if (SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED && SOC_PM_SUPPORT_PMU_MODEM_STATE && CONFIG_ESP_WIFI_ENHANCED_LIGHT_SLEEP)
+    const uint32_t slowclk_period_fixed = (slowclk_src == SOC_RTC_SLOW_CLK_SRC_RC_SLOW) ? rtc_clk_freq_to_period(SOC_CLK_RC_SLOW_FREQ_APPROX) : slowclk_period;
+#else
+    const uint32_t slowclk_period_fixed = slowclk_period;
+#endif
+
+    param->hp_sys.min_slp_slow_clk_cycle          = rtc_time_us_to_slowclk(mc->hp.min_slp_time_us, slowclk_period_fixed);
     param->hp_sys.analog_wait_target_cycle        = rtc_time_us_to_fastclk(mc->hp.analog_wait_time_us, fastclk_period);
     param->hp_sys.digital_power_supply_wait_cycle = rtc_time_us_to_fastclk(mc->hp.power_supply_wait_time_us, fastclk_period);
     param->hp_sys.digital_power_up_wait_cycle     = rtc_time_us_to_fastclk(mc->hp.power_up_wait_time_us, fastclk_period);
     param->hp_sys.pll_stable_wait_cycle           = rtc_time_us_to_fastclk(mc->hp.pll_wait_stable_time_us, fastclk_period);
 
-    const int hw_wait_time_us = pmu_sleep_calculate_hw_wait_time(sleep_flags, slowclk_period, fastclk_period);
+    const int hw_wait_time_us = pmu_sleep_calculate_hw_wait_time(sleep_flags, slowclk_src, slowclk_period, fastclk_period);
     const int modem_state_skip_time_us = mc->hp.regdma_m2a_work_time_us + mc->hp.system_dfs_up_work_time_us + mc->lp.min_slp_time_us;
     const int modem_wakeup_wait_time_us = adjustment - hw_wait_time_us + modem_state_skip_time_us + mc->hp.regdma_rf_on_work_time_us;
     param->hp_sys.modem_wakeup_wait_cycle         = rtc_time_us_to_fastclk(modem_wakeup_wait_time_us, fastclk_period);
 
-    param->lp_sys.min_slp_slow_clk_cycle          = rtc_time_us_to_slowclk(mc->lp.min_slp_time_us, slowclk_period);
+    param->lp_sys.min_slp_slow_clk_cycle          = rtc_time_us_to_slowclk(mc->lp.min_slp_time_us, slowclk_period_fixed);
     param->lp_sys.analog_wait_target_cycle        = rtc_time_us_to_slowclk(mc->lp.analog_wait_time_us, slowclk_period);
     param->lp_sys.digital_power_supply_wait_cycle = rtc_time_us_to_fastclk(mc->lp.power_supply_wait_time_us, fastclk_period);
     param->lp_sys.digital_power_up_wait_cycle     = rtc_time_us_to_fastclk(mc->lp.power_up_wait_time_us, fastclk_period);
@@ -201,6 +220,7 @@ const pmu_sleep_config_t* pmu_sleep_config_default(
         uint32_t sleep_flags,
         uint32_t clk_flags,
         uint32_t adjustment,
+        soc_rtc_slow_clk_src_t slowclk_src,
         uint32_t slowclk_period,
         uint32_t fastclk_period,
         bool dslp
@@ -210,7 +230,7 @@ const pmu_sleep_config_t* pmu_sleep_config_default(
     config->power = power_default;
 
     pmu_sleep_param_config_t param_default = PMU_SLEEP_PARAM_CONFIG_DEFAULT(sleep_flags);
-    config->param = *pmu_sleep_param_config_default(&param_default, &power_default, sleep_flags, adjustment, slowclk_period, fastclk_period);
+    config->param = *pmu_sleep_param_config_default(&param_default, &power_default, sleep_flags, adjustment, slowclk_src, slowclk_period, fastclk_period);
 
     if (dslp) {
         config->param.lp_sys.analog_wait_target_cycle  = rtc_time_us_to_slowclk(PMU_LP_ANALOG_WAIT_TARGET_TIME_DSLP_US, slowclk_period);
diff --git a/components/esp_hw_support/port/esp32c61/pmu_sleep.c b/components/esp_hw_support/port/esp32c61/pmu_sleep.c
index cd75f6d3c0..8b9a746952 100644
--- a/components/esp_hw_support/port/esp32c61/pmu_sleep.c
+++ b/components/esp_hw_support/port/esp32c61/pmu_sleep.c
@@ -51,7 +51,7 @@ void pmu_sleep_disable_regdma_backup(void)
     }
 }
 
-uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, uint32_t slowclk_period, uint32_t fastclk_period)
+uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, soc_rtc_slow_clk_src_t slowclk_src, uint32_t slowclk_period, uint32_t fastclk_period)
 {
     const pmu_sleep_machine_constant_t *mc = (pmu_sleep_machine_constant_t *)PMU_instance()->mc;
 
@@ -98,8 +98,20 @@ uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, uint32_t slowclk
      *                     |                           wake-up delay                          |
      */
 #if SOC_PM_SUPPORT_PMU_MODEM_STATE && CONFIG_ESP_WIFI_ENHANCED_LIGHT_SLEEP
+    int min_slp_time_adjustment_us = 0;
+#if SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED
+    if (slowclk_src == SOC_RTC_SLOW_CLK_SRC_RC_SLOW) {
+        const uint32_t slowclk_period_fixed = rtc_clk_freq_to_period(SOC_CLK_RC_SLOW_FREQ_APPROX);
+        const int min_slp_cycle_fixed = rtc_time_us_to_slowclk(mc->hp.min_slp_time_us, slowclk_period_fixed);
+        const int min_slp_cycle_calib = rtc_time_us_to_slowclk(mc->hp.min_slp_time_us, slowclk_period);
+        const int min_slp_cycle_diff = (min_slp_cycle_calib > min_slp_cycle_fixed) ? \
+                       (min_slp_cycle_calib - min_slp_cycle_fixed) : (min_slp_cycle_fixed - min_slp_cycle_calib);
+        const int min_slp_time_diff = rtc_time_slowclk_to_us(min_slp_cycle_diff, slowclk_period_fixed);
+        min_slp_time_adjustment_us = (min_slp_cycle_calib > min_slp_cycle_fixed) ? min_slp_time_diff : -min_slp_time_diff;
+    }
+#endif
     const int rf_on_protect_time_us = mc->hp.regdma_rf_on_work_time_us;
-    const int total_hw_wait_time_us = lp_hw_wait_time_us + hp_hw_wait_time_us + mc->hp.clock_domain_sync_time_us;
+    const int total_hw_wait_time_us = lp_hw_wait_time_us + hp_hw_wait_time_us + mc->hp.clock_domain_sync_time_us + min_slp_time_adjustment_us;
 #else
     const int rf_on_protect_time_us = 0;
     const int total_hw_wait_time_us = lp_hw_wait_time_us + hp_hw_wait_time_us;
@@ -114,13 +126,20 @@ static inline pmu_sleep_param_config_t * pmu_sleep_param_config_default(
         pmu_sleep_power_config_t *power, /* We'll use the runtime power parameter to determine some hardware parameters */
         const uint32_t sleep_flags,
         const uint32_t adjustment,
+        soc_rtc_slow_clk_src_t slowclk_src,
         const uint32_t slowclk_period,
         const uint32_t fastclk_period
     )
 {
     const pmu_sleep_machine_constant_t *mc = (pmu_sleep_machine_constant_t *)PMU_instance()->mc;
 
-    param->hp_sys.min_slp_slow_clk_cycle          = rtc_time_us_to_slowclk(mc->hp.min_slp_time_us, slowclk_period);
+#if (SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED && SOC_PM_SUPPORT_PMU_MODEM_STATE && CONFIG_ESP_WIFI_ENHANCED_LIGHT_SLEEP)
+    const uint32_t slowclk_period_fixed = (slowclk_src == SOC_RTC_SLOW_CLK_SRC_RC_SLOW) ? rtc_clk_freq_to_period(SOC_CLK_RC_SLOW_FREQ_APPROX) : slowclk_period;
+#else
+    const uint32_t slowclk_period_fixed = slowclk_period;
+#endif
+
+    param->hp_sys.min_slp_slow_clk_cycle          = rtc_time_us_to_slowclk(mc->hp.min_slp_time_us, slowclk_period_fixed);
     param->hp_sys.analog_wait_target_cycle        = rtc_time_us_to_fastclk(mc->hp.analog_wait_time_us, fastclk_period);
     param->hp_sys.digital_power_supply_wait_cycle = rtc_time_us_to_fastclk(mc->hp.power_supply_wait_time_us, fastclk_period);
     param->hp_sys.digital_power_up_wait_cycle     = rtc_time_us_to_fastclk(mc->hp.power_up_wait_time_us, fastclk_period);
@@ -128,12 +147,12 @@ static inline pmu_sleep_param_config_t * pmu_sleep_param_config_default(
     param->hp_sys.isolate_wait_cycle              = rtc_time_us_to_fastclk(mc->hp.isolate_wait_time_us, fastclk_period);
     param->hp_sys.reset_wait_cycle                = rtc_time_us_to_fastclk(mc->hp.reset_wait_time_us, fastclk_period);
 
-    const int hw_wait_time_us = pmu_sleep_calculate_hw_wait_time(sleep_flags, slowclk_period, fastclk_period);
+    const int hw_wait_time_us = pmu_sleep_calculate_hw_wait_time(sleep_flags, slowclk_src, slowclk_period, fastclk_period);
     const int modem_state_skip_time_us = mc->hp.regdma_m2a_work_time_us + mc->hp.system_dfs_up_work_time_us + mc->lp.min_slp_time_us;
     const int modem_wakeup_wait_time_us = adjustment - hw_wait_time_us + modem_state_skip_time_us + mc->hp.regdma_rf_on_work_time_us;
     param->hp_sys.modem_wakeup_wait_cycle         = rtc_time_us_to_fastclk(modem_wakeup_wait_time_us, fastclk_period);
 
-    param->lp_sys.min_slp_slow_clk_cycle          = rtc_time_us_to_slowclk(mc->lp.min_slp_time_us, slowclk_period);
+    param->lp_sys.min_slp_slow_clk_cycle          = rtc_time_us_to_slowclk(mc->lp.min_slp_time_us, slowclk_period_fixed);
     param->lp_sys.analog_wait_target_cycle        = rtc_time_us_to_slowclk(mc->lp.analog_wait_time_us, slowclk_period);
     param->lp_sys.digital_power_supply_wait_cycle = rtc_time_us_to_fastclk(mc->lp.power_supply_wait_time_us, fastclk_period);
     param->lp_sys.digital_power_up_wait_cycle     = rtc_time_us_to_fastclk(mc->lp.power_up_wait_time_us, fastclk_period);
@@ -153,6 +172,7 @@ const pmu_sleep_config_t* pmu_sleep_config_default(
         uint32_t sleep_flags,
         uint32_t clk_flags,
         uint32_t adjustment,
+        soc_rtc_slow_clk_src_t slowclk_src,
         uint32_t slowclk_period,
         uint32_t fastclk_period,
         bool dslp
@@ -162,7 +182,7 @@ const pmu_sleep_config_t* pmu_sleep_config_default(
     config->power = power_default;
 
     pmu_sleep_param_config_t param_default = PMU_SLEEP_PARAM_CONFIG_DEFAULT(sleep_flags);
-    config->param = *pmu_sleep_param_config_default(&param_default, &power_default, sleep_flags, adjustment, slowclk_period, fastclk_period);
+    config->param = *pmu_sleep_param_config_default(&param_default, &power_default, sleep_flags, adjustment, slowclk_src, slowclk_period, fastclk_period);
 
     if (dslp) {
         config->param.lp_sys.analog_wait_target_cycle  = rtc_time_us_to_slowclk(PMU_LP_ANALOG_WAIT_TARGET_TIME_DSLP_US, slowclk_period);
diff --git a/components/esp_hw_support/port/esp32h2/pmu_sleep.c b/components/esp_hw_support/port/esp32h2/pmu_sleep.c
index e1acf9896d..b0c6c7d434 100644
--- a/components/esp_hw_support/port/esp32h2/pmu_sleep.c
+++ b/components/esp_hw_support/port/esp32h2/pmu_sleep.c
@@ -63,7 +63,7 @@ void pmu_sleep_disable_regdma_backup(void)
     pmu_hal_hp_set_sleep_active_backup_disable(PMU_instance()->hal);
 }
 
-uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, uint32_t slowclk_period, uint32_t fastclk_period)
+uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, soc_rtc_slow_clk_src_t slowclk_src, uint32_t slowclk_period, uint32_t fastclk_period)
 {
     pmu_sleep_machine_constant_t *mc = (pmu_sleep_machine_constant_t *)PMU_instance()->mc;
 
@@ -133,6 +133,7 @@ const pmu_sleep_config_t* pmu_sleep_config_default(
         uint32_t sleep_flags,
         uint32_t clk_flags,
         uint32_t adjustment,
+        soc_rtc_slow_clk_src_t slowclk_src,
         uint32_t slowclk_period,
         uint32_t fastclk_period,
         bool dslp
diff --git a/components/esp_hw_support/port/esp32h21/pmu_sleep.c b/components/esp_hw_support/port/esp32h21/pmu_sleep.c
index 9f5cf7cac5..06987dfe67 100644
--- a/components/esp_hw_support/port/esp32h21/pmu_sleep.c
+++ b/components/esp_hw_support/port/esp32h21/pmu_sleep.c
@@ -64,7 +64,7 @@ void pmu_sleep_disable_regdma_backup(void)
     pmu_hal_hp_set_sleep_active_backup_disable(PMU_instance()->hal);
 }
 
-uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, uint32_t slowclk_period, uint32_t fastclk_period)
+uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, soc_rtc_slow_clk_src_t slowclk_src, uint32_t slowclk_period, uint32_t fastclk_period)
 {
     pmu_sleep_machine_constant_t *mc = (pmu_sleep_machine_constant_t *)PMU_instance()->mc;
 
@@ -133,6 +133,7 @@ const pmu_sleep_config_t* pmu_sleep_config_default(
         pmu_sleep_config_t *config,
         uint32_t sleep_flags,
         uint32_t adjustment,
+        soc_rtc_slow_clk_src_t slowclk_src,
         uint32_t slowclk_period,
         uint32_t fastclk_period,
         bool dslp
diff --git a/components/esp_hw_support/port/esp32p4/pmu_sleep.c b/components/esp_hw_support/port/esp32p4/pmu_sleep.c
index bc9eee8647..444117441b 100644
--- a/components/esp_hw_support/port/esp32p4/pmu_sleep.c
+++ b/components/esp_hw_support/port/esp32p4/pmu_sleep.c
@@ -106,7 +106,7 @@ uint32_t pmu_sleep_calculate_hp_hw_wait_time(uint32_t sleep_flags, uint32_t slow
     return (uint32_t)hp_hw_wait_time_us;
 }
 
-uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, uint32_t slowclk_period, uint32_t fastclk_period)
+uint32_t pmu_sleep_calculate_hw_wait_time(uint32_t sleep_flags, soc_rtc_slow_clk_src_t slowclk_src, uint32_t slowclk_period, uint32_t fastclk_period)
 {
     const uint32_t lp_hw_wait_time_us = pmu_sleep_calculate_lp_hw_wait_time(sleep_flags, slowclk_period, fastclk_period);
     const uint32_t hp_hw_wait_time_us = pmu_sleep_calculate_hp_hw_wait_time(sleep_flags, slowclk_period, fastclk_period);
@@ -121,6 +121,7 @@ static inline pmu_sleep_param_config_t * pmu_sleep_param_config_default(
         pmu_sleep_power_config_t *power, /* We'll use the runtime power parameter to determine some hardware parameters */
         const uint32_t sleep_flags,
         const uint32_t adjustment,
+        soc_rtc_slow_clk_src_t slowclk_src,
         const uint32_t slowclk_period,
         const uint32_t fastclk_period
     )
@@ -151,6 +152,7 @@ const pmu_sleep_config_t* pmu_sleep_config_default(
         uint32_t sleep_flags,
         uint32_t clk_flags,
         uint32_t adjustment,
+        soc_rtc_slow_clk_src_t slowclk_src,
         uint32_t slowclk_period,
         uint32_t fastclk_period,
         bool dslp
@@ -226,7 +228,7 @@ const pmu_sleep_config_t* pmu_sleep_config_default(
 
     config->power = power_default;
     pmu_sleep_param_config_t param_default = PMU_SLEEP_PARAM_CONFIG_DEFAULT(sleep_flags);
-    config->param = *pmu_sleep_param_config_default(&param_default, &power_default, sleep_flags, adjustment, slowclk_period, fastclk_period);
+    config->param = *pmu_sleep_param_config_default(&param_default, &power_default, sleep_flags, adjustment, slowclk_src, slowclk_period, fastclk_period);
 
     return config;
 }
diff --git a/components/esp_hw_support/sleep_modes.c b/components/esp_hw_support/sleep_modes.c
index c2dd9cd207..b87190a460 100644
--- a/components/esp_hw_support/sleep_modes.c
+++ b/components/esp_hw_support/sleep_modes.c
@@ -953,7 +953,8 @@ static esp_err_t IRAM_ATTR esp_sleep_start(uint32_t sleep_flags, uint32_t clk_fl
 
     pmu_sleep_config_t config;
     pmu_sleep_init(pmu_sleep_config_default(&config, sleep_flags, clk_flags, s_config.sleep_time_adjustment,
-            s_config.rtc_clk_cal_period, s_config.fast_clk_cal_period, deep_sleep), deep_sleep);
+            rtc_clk_slow_src_get(), s_config.rtc_clk_cal_period, s_config.fast_clk_cal_period,
+            deep_sleep), deep_sleep);
 #else
     rtc_sleep_config_t config;
     rtc_sleep_get_default_config(sleep_flags, &config);
@@ -1409,7 +1410,7 @@ esp_err_t esp_light_sleep_start(void)
      */
 #if SOC_PMU_SUPPORTED
     int sleep_time_sw_adjustment = LIGHT_SLEEP_TIME_OVERHEAD_US + sleep_time_overhead_in + s_config.sleep_time_overhead_out;
-    int sleep_time_hw_adjustment = pmu_sleep_calculate_hw_wait_time(sleep_flags, s_config.rtc_clk_cal_period, s_config.fast_clk_cal_period);
+    int sleep_time_hw_adjustment = pmu_sleep_calculate_hw_wait_time(sleep_flags, rtc_clk_slow_src_get(), s_config.rtc_clk_cal_period, s_config.fast_clk_cal_period);
     s_config.sleep_time_adjustment = sleep_time_sw_adjustment + sleep_time_hw_adjustment;
 #if SOC_PM_MMU_TABLE_RETENTION_WHEN_TOP_PD
     int sleep_time_sw_mmu_table_restore = (sleep_flags & PMU_SLEEP_PD_TOP) ? SLEEP_MMU_TABLE_RETENTION_OVERHEAD_US : 0;
diff --git a/components/soc/esp32c5/include/soc/Kconfig.soc_caps.in b/components/soc/esp32c5/include/soc/Kconfig.soc_caps.in
index 680fa3f138..c46cc77b28 100644
--- a/components/soc/esp32c5/include/soc/Kconfig.soc_caps.in
+++ b/components/soc/esp32c5/include/soc/Kconfig.soc_caps.in
@@ -1547,6 +1547,10 @@ config SOC_PM_PAU_REGDMA_UPDATE_CACHE_BEFORE_WAIT_COMPARE
     bool
     default y
 
+config SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED
+    bool
+    default y
+
 config SOC_PM_RETENTION_MODULE_NUM
     int
     default 32
diff --git a/components/soc/esp32c5/include/soc/soc_caps.h b/components/soc/esp32c5/include/soc/soc_caps.h
index 077b6cdc4a..92b074a257 100644
--- a/components/soc/esp32c5/include/soc/soc_caps.h
+++ b/components/soc/esp32c5/include/soc/soc_caps.h
@@ -618,6 +618,7 @@
 #define SOC_PM_PAU_REGDMA_LINK_IDX_WIFIMAC  (4) // The range of values for the link index is [0, SOC_PM_PAU_LINK_NUM)
 
 #define SOC_PM_PAU_REGDMA_UPDATE_CACHE_BEFORE_WAIT_COMPARE  (1)
+#define SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED    (1)
 
 #define SOC_PM_RETENTION_MODULE_NUM         (32)
 
diff --git a/components/soc/esp32c6/include/soc/Kconfig.soc_caps.in b/components/soc/esp32c6/include/soc/Kconfig.soc_caps.in
index 0e0bf78497..7f03bd86c6 100644
--- a/components/soc/esp32c6/include/soc/Kconfig.soc_caps.in
+++ b/components/soc/esp32c6/include/soc/Kconfig.soc_caps.in
@@ -1491,6 +1491,10 @@ config SOC_PM_PAU_REGDMA_UPDATE_CACHE_BEFORE_WAIT_COMPARE
     bool
     default y
 
+config SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED
+    bool
+    default y
+
 config SOC_PM_RETENTION_MODULE_NUM
     int
     default 32
diff --git a/components/soc/esp32c6/include/soc/soc_caps.h b/components/soc/esp32c6/include/soc/soc_caps.h
index 2c87311382..ada0b9eb1f 100644
--- a/components/soc/esp32c6/include/soc/soc_caps.h
+++ b/components/soc/esp32c6/include/soc/soc_caps.h
@@ -580,6 +580,7 @@
 #define SOC_PM_PAU_REGDMA_LINK_WIFIMAC      (1)
 
 #define SOC_PM_PAU_REGDMA_UPDATE_CACHE_BEFORE_WAIT_COMPARE  (1)
+#define SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED    (1)
 
 #define SOC_PM_RETENTION_MODULE_NUM         (32)
 
diff --git a/components/soc/esp32c61/include/soc/Kconfig.soc_caps.in b/components/soc/esp32c61/include/soc/Kconfig.soc_caps.in
index 064a33934d..9548e4ea73 100644
--- a/components/soc/esp32c61/include/soc/Kconfig.soc_caps.in
+++ b/components/soc/esp32c61/include/soc/Kconfig.soc_caps.in
@@ -1155,6 +1155,10 @@ config SOC_PM_PAU_REGDMA_UPDATE_CACHE_BEFORE_WAIT_COMPARE
     bool
     default y
 
+config SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED
+    bool
+    default y
+
 config SOC_PM_RETENTION_MODULE_NUM
     int
     default 32
diff --git a/components/soc/esp32c61/include/soc/soc_caps.h b/components/soc/esp32c61/include/soc/soc_caps.h
index 2ccc6def12..2d2b8947b8 100644
--- a/components/soc/esp32c61/include/soc/soc_caps.h
+++ b/components/soc/esp32c61/include/soc/soc_caps.h
@@ -474,6 +474,7 @@
 #define SOC_PM_PAU_REGDMA_LINK_WIFIMAC      (1)
 
 #define SOC_PM_PAU_REGDMA_UPDATE_CACHE_BEFORE_WAIT_COMPARE  (1)
+#define SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED    (1)
 
 #define SOC_PM_RETENTION_MODULE_NUM         (32)