diff --git a/components/esp_hw_support/port/esp32c6/pmu_param.c b/components/esp_hw_support/port/esp32c6/pmu_param.c
index 6e0a8ea8cb..ccfc32b6ef 100644
--- a/components/esp_hw_support/port/esp32c6/pmu_param.c
+++ b/components/esp_hw_support/port/esp32c6/pmu_param.c
@@ -211,7 +211,7 @@ const pmu_hp_system_digital_param_t * pmu_hp_system_digital_param_default(pmu_hp
         .xpd             = 1,   \
         .slp_mem_dbias   = 0, \
         .slp_logic_dbias = 0, \
-        .dbias           = 0x19 \
+        .dbias           = HP_CALI_DBIAS \
     }, \
     .regulator1 = {             \
         .drv_b           = 0x0 \
@@ -231,7 +231,7 @@ const pmu_hp_system_digital_param_t * pmu_hp_system_digital_param_default(pmu_hp
         .xpd             = 1,   \
         .slp_mem_dbias   = 0, \
         .slp_logic_dbias = 0, \
-        .dbias           = 0x1a \
+        .dbias           = HP_CALI_DBIAS \
     }, \
     .regulator1 = {             \
         .drv_b           = 0x0 \
diff --git a/components/esp_hw_support/port/esp32c6/rtc_clk_init.c b/components/esp_hw_support/port/esp32c6/rtc_clk_init.c
index 0f911ace88..2884550feb 100644
--- a/components/esp_hw_support/port/esp32c6/rtc_clk_init.c
+++ b/components/esp_hw_support/port/esp32c6/rtc_clk_init.c
@@ -24,6 +24,8 @@
 #include "hal/pmu_ll.h"
 #include "hal/modem_syscon_ll.h"
 #include "hal/modem_lpcon_ll.h"
+#include "soc/pmu_reg.h"
+#include "pmu_param.h"
 
 static const char *TAG = "rtc_clk_init";
 
@@ -72,6 +74,10 @@ void rtc_clk_init(rtc_clk_config_t cfg)
     REG_SET_FIELD(LP_CLKRST_FOSC_CNTL_REG, LP_CLKRST_FOSC_DFREQ, cfg.clk_8m_dfreq);
     REGI2C_WRITE_MASK(I2C_DIG_REG, I2C_DIG_REG_SCK_DCAP, cfg.slow_clk_dcap);
     REG_SET_FIELD(LP_CLKRST_RC32K_CNTL_REG, LP_CLKRST_RC32K_DFREQ, cfg.rc32k_dfreq);
+    REGI2C_WRITE_MASK(I2C_DIG_REG, I2C_DIG_REG_ENIF_RTC_DREG, 1);
+    REGI2C_WRITE_MASK(I2C_DIG_REG, I2C_DIG_REG_ENIF_DIG_DREG, 1);
+    REG_SET_FIELD(PMU_HP_ACTIVE_HP_REGULATOR0_REG, PMU_HP_ACTIVE_HP_REGULATOR_DBIAS, HP_CALI_DBIAS);
+    REG_SET_FIELD(PMU_HP_SLEEP_LP_REGULATOR0_REG, PMU_HP_SLEEP_LP_REGULATOR_DBIAS, LP_CALI_DBIAS);
 
     clk_ll_rc_fast_tick_conf();
 
diff --git a/components/esp_hw_support/port/esp32h2/rtc_clk_init.c b/components/esp_hw_support/port/esp32h2/rtc_clk_init.c
index aaa476e5b6..02d8b9bc4a 100644
--- a/components/esp_hw_support/port/esp32h2/rtc_clk_init.c
+++ b/components/esp_hw_support/port/esp32h2/rtc_clk_init.c
@@ -20,6 +20,8 @@
 #include "sdkconfig.h"
 #include "esp_rom_uart.h"
 #include "hal/clk_tree_ll.h"
+#include "soc/pmu_reg.h"
+#include "pmu_param.h"
 
 static const char *TAG = "rtc_clk_init";
 
@@ -39,6 +41,10 @@ void rtc_clk_init(rtc_clk_config_t cfg)
     REG_SET_FIELD(LP_CLKRST_FOSC_CNTL_REG, LP_CLKRST_FOSC_DFREQ, cfg.clk_8m_dfreq);
     REGI2C_WRITE_MASK(I2C_PMU, I2C_PMU_OC_SCK_DCAP, cfg.slow_clk_dcap);
     REG_SET_FIELD(LP_CLKRST_RC32K_CNTL_REG, LP_CLKRST_RC32K_DFREQ, cfg.rc32k_dfreq);
+    REGI2C_WRITE_MASK(I2C_PMU, I2C_PMU_EN_I2C_RTC_DREG, 0);
+    REGI2C_WRITE_MASK(I2C_PMU, I2C_PMU_EN_I2C_DIG_DREG, 0);
+    REG_SET_FIELD(PMU_HP_ACTIVE_HP_REGULATOR0_REG, PMU_HP_ACTIVE_HP_REGULATOR_DBIAS, HP_CALI_DBIAS);
+    REG_SET_FIELD(PMU_HP_SLEEP_LP_REGULATOR0_REG, PMU_HP_SLEEP_LP_REGULATOR_DBIAS, LP_CALI_DBIAS);
 
     clk_ll_rc_fast_tick_conf();
 
diff --git a/components/soc/esp32h2/include/soc/rtc.h b/components/soc/esp32h2/include/soc/rtc.h
index 1730c29980..c383142328 100644
--- a/components/soc/esp32h2/include/soc/rtc.h
+++ b/components/soc/esp32h2/include/soc/rtc.h
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2020-2023 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
diff --git a/components/soc/esp32h2/include/soc/soc.h b/components/soc/esp32h2/include/soc/soc.h
index 6d7e5d9d53..df23f1f34d 100644
--- a/components/soc/esp32h2/include/soc/soc.h
+++ b/components/soc/esp32h2/include/soc/soc.h
@@ -137,7 +137,7 @@
 #define  APB_CLK_FREQ_ROM                            ( 32*1000000 )
 #define  CPU_CLK_FREQ_ROM                            APB_CLK_FREQ_ROM
 #define  EFUSE_CLK_FREQ_ROM                          ( 20*1000000)
-#define  CPU_CLK_FREQ_MHZ_BTLD                       (96)               // The cpu clock frequency (in MHz) to set at 2nd stage bootloader system clock configuration
+#define  CPU_CLK_FREQ_MHZ_BTLD                       (64)               // The cpu clock frequency (in MHz) to set at 2nd stage bootloader system clock configuration
 #define  CPU_CLK_FREQ                                APB_CLK_FREQ
 #define  APB_CLK_FREQ                                ( 32*1000000 )
 #define  MODEM_APB_CLK_FREQ                          ( 32*1000000 )