feat(esp_hw_support): use pvt to auto control digital ldo and rtc ldo for esp32p4

components/esp_hw_support/Kconfig

@@ -296,6 +296,15 @@ menu "Hardware Settings"
             RC32K (it cannot operate below -40 degrees Celsius),
             please avoid using it whenever possible
 
+    config ESP_ENABLE_PVT
+        bool "Auto adjust hp & lp voltage using pvt function (MUST ENABLE FOR MP)"
+        depends on SOC_PMU_PVT_SUPPORTED
+        default y
+        help
+            If enabled, hp & lp voltage can be auto adjust by PVT characteristic.
+            Otherwise, internal voltage will be set to fix dbias.
+            This is a must for stable mass production. Disable for debugging only.
+
     config ESP_INTR_IN_IRAM
         bool "Place esp_intr_alloc functions in IRAM" if SPI_FLASH_AUTO_SUSPEND
         default y

components/esp_hw_support/linker.lf

@@ -43,6 +43,8 @@ entries:
         elif PM_SLP_IRAM_OPT = y && IDF_TARGET_ESP32P4 != y:
             pmu_param:get_act_hp_dbias (noflash)
             pmu_param:get_act_lp_dbias (noflash)
+    if SOC_PMU_PVT_SUPPORTED = y:
+        pmu_pvt (noflash)
     if PM_SLP_IRAM_OPT = y && SOC_USB_SERIAL_JTAG_SUPPORTED = y:
         sleep_console (noflash)
     if PM_SLP_IRAM_OPT = y && SOC_USB_OTG_SUPPORTED && SOC_PM_SUPPORT_CNNT_PD = y:

components/esp_hw_support/port/esp32p4/CMakeLists.txt

@@ -13,6 +13,10 @@ if(NOT BOOTLOADER_BUILD)
     list(APPEND srcs "sar_periph_ctrl.c")
 endif()
 
+if(NOT BOOTLOADER_BUILD AND CONFIG_ESP_ENABLE_PVT)
+    list(APPEND srcs "pmu_pvt.c")
+endif()
+
 add_prefix(srcs "${CMAKE_CURRENT_LIST_DIR}/" "${srcs}")
 
 target_sources(${COMPONENT_LIB} PRIVATE "${srcs}")

components/esp_hw_support/port/esp32p4/include/soc/rtc.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -95,6 +95,36 @@ set sleep_init default param
 #define RTC_CNTL_PD_CUR_SLEEP_DEFAULT  1
 #define RTC_CNTL_DG_VDD_DRV_B_SLP_DEFAULT 254
 
+#if CONFIG_ESP_ENABLE_PVT
+
+#define PVT_CHANNEL0_SEL    49
+#define PVT_CHANNEL1_SEL    53
+#define PVT_CHANNEL0_CFG    0x13e80
+#define PVT_CHANNEL1_CFG    0x13e80
+#define PVT_CHANNEL2_CFG    0x10000
+#define PVT_CMD0            0x24
+#define PVT_CMD1            0x5
+#define PVT_CMD2            0x427
+#define PVT_TARGET          0x7d00
+#define PVT_CLK_DIV         1
+#define PVT_EDG_MODE        1
+#define PVT_DELAY_NUM_HIGH  164
+#define PVT_DELAY_NUM_LOW   157
+
+/**
+ * @brief Initialize PVT related parameters
+ */
+void pvt_auto_dbias_init(void);
+
+/**
+ * @brief Enable or disable PVT functions
+ *
+ * @param enable  true to enable, false to disable
+ */
+void pvt_func_enable(bool enable);
+
+#endif //#if CONFIG_ESP_ENABLE_PVT
+
 /*
 The follow value is used to get a reasonable rtc voltage dbias value according to digital dbias & some other value
 storing in efuse (based on ATE 5k ECO3 chips)

components/esp_hw_support/port/esp32p4/pmu_init.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2023-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -18,6 +18,8 @@
 #include "esp_private/esp_pmu.h"
 #include "soc/regi2c_dig_reg.h"
 #include "regi2c_ctrl.h"
+#include "esp_rom_sys.h"
+#include "soc/rtc.h"
 
 static __attribute__((unused)) const char *TAG = "pmu_init";
 
@@ -194,4 +196,10 @@ void pmu_init(void)
     pmu_hp_system_init_default(PMU_instance());
     pmu_lp_system_init_default(PMU_instance());
     pmu_power_domain_force_default(PMU_instance());
+#if CONFIG_ESP_ENABLE_PVT
+    pvt_auto_dbias_init();
+    pvt_func_enable(true);
+    // For PVT func taking effect, need delay.
+    esp_rom_delay_us(1000);
+#endif
 }

components/esp_hw_support/port/esp32p4/pmu_param.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2023-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -13,6 +13,11 @@
 #include "soc/pmu_icg_mapping.h"
 #include "esp_private/esp_pmu.h"
 #include "soc/clk_tree_defs.h"
+#include "hal/efuse_ll.h"
+#include "hal/efuse_hal.h"
+#include "esp_hw_log.h"
+
+static __attribute__((unused)) const char *TAG = "pmu_param";
 
 #ifndef ARRAY_SIZE
 #define ARRAY_SIZE(a)   (sizeof(a) / sizeof((a)[0]))
@@ -323,3 +328,46 @@ const pmu_lp_system_analog_param_t * pmu_lp_system_analog_param_default(pmu_lp_m
     assert(mode < ARRAY_SIZE(lp_analog));
     return &lp_analog[mode];
 }
+
+uint32_t get_act_hp_dbias(void)
+{
+    /* hp_cali_dbias is read from efuse to ensure that the hp_active_voltage is close to 1.15V
+    */
+    uint32_t hp_cali_dbias = HP_CALI_ACTIVE_DBIAS_DEFAULT;
+    uint32_t blk_version = efuse_hal_blk_version();
+    uint32_t hp_cali_dbias_efuse = 0;
+    if (blk_version >= 2) {
+        hp_cali_dbias_efuse = efuse_ll_get_active_hp_dbias();
+    }
+    if (hp_cali_dbias_efuse > 0) {
+        hp_cali_dbias = hp_cali_dbias_efuse + 16;
+        if (hp_cali_dbias > 31) {
+            hp_cali_dbias = 31;
+        }
+    } else {
+        ESP_HW_LOGW(TAG, "hp_cali_dbias not burnt in efuse, use default.");
+    }
+    return hp_cali_dbias;
+}
+
+uint32_t get_act_lp_dbias(void)
+{
+    /* lp_cali_dbias is read from efuse to ensure that the lp_active_voltage is close to 1.15V
+    */
+    uint32_t lp_cali_dbias = LP_CALI_ACTIVE_DBIAS_DEFAULT;
+    uint32_t blk_version = efuse_hal_blk_version();
+    uint32_t lp_cali_dbias_efuse = 0;
+    if (blk_version >= 2) {
+        lp_cali_dbias_efuse = efuse_ll_get_active_lp_dbias();
+    }
+    if (lp_cali_dbias_efuse > 0) {
+        //efuse dbias need to add 4 to near to dcdc voltage
+        lp_cali_dbias = lp_cali_dbias_efuse + 16 + 4;
+        if (lp_cali_dbias > 31) {
+            lp_cali_dbias = 31;
+        }
+    } else {
+        ESP_HW_LOGW(TAG, "lp_cali_dbias not burnt in efuse, use default.");
+    }
+    return lp_cali_dbias;
+}

components/esp_hw_support/port/esp32p4/pmu_pvt.c

@@ -0,0 +1,153 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <esp_types.h>
+#include "sdkconfig.h"
+#include "esp_attr.h"
+#include "soc/soc.h"
+#include "soc/pmu_struct.h"
+#include "soc/pvt_reg.h"
+#include "soc/pmu_reg.h"
+#include "hal/pmu_hal.h"
+#include "pmu_param.h"
+#include "esp_rom_sys.h"
+#include "esp_private/esp_pmu.h"
+#include "soc/regi2c_dig_reg.h"
+#include "regi2c_ctrl.h"
+#include "soc/rtc.h"
+#include "hal/efuse_ll.h"
+#include "hal/efuse_hal.h"
+#include "esp_hw_log.h"
+
+static __attribute__((unused)) const char *TAG = "pmu_pvt";
+
+#if CONFIG_ESP_ENABLE_PVT
+
+static uint8_t get_lp_hp_gap(void)
+{
+    int8_t lp_hp_gap = 0;
+    uint32_t blk_version = efuse_hal_blk_version();
+    uint8_t lp_hp_gap_efuse = 0;
+    if (blk_version >= 2) {
+        lp_hp_gap_efuse = efuse_ll_get_dbias_vol_gap();
+        bool gap_flag = lp_hp_gap_efuse >> 4;
+        uint8_t gap_abs_value = lp_hp_gap_efuse & 0xf;
+        if (gap_flag) {
+            lp_hp_gap = -1 * gap_abs_value;
+        } else {
+            lp_hp_gap = gap_abs_value;
+        }
+        lp_hp_gap = lp_hp_gap - 8;
+        assert((lp_hp_gap >= -15) && (lp_hp_gap <= 7));
+        if (lp_hp_gap < 0 ) {
+            lp_hp_gap = 16 - lp_hp_gap;
+        }
+    }
+    return lp_hp_gap;
+}
+
+static void set_pvt_hp_lp_gap(uint8_t value)
+{
+    bool flag = value >> 4;
+    uint8_t abs_value = value & 0xf;
+
+    SET_PERI_REG_BITS(PVT_DBIAS_CMD0_REG, PVT_DBIAS_CMD0_OFFSET_FLAG, flag, PVT_DBIAS_CMD0_OFFSET_FLAG_S);
+    SET_PERI_REG_BITS(PVT_DBIAS_CMD0_REG, PVT_DBIAS_CMD0_OFFSET_VALUE, abs_value, PVT_DBIAS_CMD0_OFFSET_VALUE_S);
+    SET_PERI_REG_BITS(PVT_DBIAS_CMD1_REG, PVT_DBIAS_CMD1_OFFSET_FLAG, flag, PVT_DBIAS_CMD1_OFFSET_FLAG_S);
+    SET_PERI_REG_BITS(PVT_DBIAS_CMD1_REG, PVT_DBIAS_CMD1_OFFSET_VALUE, abs_value, PVT_DBIAS_CMD1_OFFSET_VALUE_S);
+    SET_PERI_REG_BITS(PVT_DBIAS_CMD2_REG, PVT_DBIAS_CMD2_OFFSET_FLAG, flag, PVT_DBIAS_CMD2_OFFSET_FLAG_S);
+    SET_PERI_REG_BITS(PVT_DBIAS_CMD2_REG, PVT_DBIAS_CMD2_OFFSET_VALUE, abs_value, PVT_DBIAS_CMD2_OFFSET_VALUE_S);
+}
+
+static uint32_t pvt_get_dcmvset(void)
+{
+    return GET_PERI_REG_BITS2(PMU_HP_ACTIVE_HP_REGULATOR0_REG, PMU_HP_DBIAS_VOL_V, PMU_HP_DBIAS_VOL_S);
+}
+
+static uint32_t pvt_get_lp_dbias(void)
+{
+    return GET_PERI_REG_BITS2(PMU_HP_ACTIVE_HP_REGULATOR0_REG, PMU_LP_DBIAS_VOL_V, PMU_LP_DBIAS_VOL_S);
+}
+
+void pvt_auto_dbias_init(void)
+{
+    uint32_t blk_version = efuse_hal_blk_version();
+    if (blk_version >= 2) {
+        SET_PERI_REG_MASK(HP_SYS_CLKRST_REF_CLK_CTRL2_REG, HP_SYS_CLKRST_REG_REF_160M_CLK_EN);
+        SET_PERI_REG_MASK(HP_SYS_CLKRST_SOC_CLK_CTRL1_REG, HP_SYS_CLKRST_REG_PVT_SYS_CLK_EN);
+        /*config for dbias func*/
+        CLEAR_PERI_REG_MASK(PVT_DBIAS_TIMER_REG, PVT_TIMER_EN);
+        esp_rom_delay_us(100);
+        SET_PERI_REG_BITS(PVT_DBIAS_CHANNEL_SEL0_REG, PVT_DBIAS_CHANNEL0_SEL, PVT_CHANNEL0_SEL, PVT_DBIAS_CHANNEL0_SEL_S);
+        SET_PERI_REG_BITS(PVT_DBIAS_CHANNEL_SEL0_REG, PVT_DBIAS_CHANNEL1_SEL, PVT_CHANNEL1_SEL, PVT_DBIAS_CHANNEL1_SEL_S);  // Select monitor cell, which used to monitor PVT situation
+        SET_PERI_REG_BITS(PVT_DBIAS_CHANNEL0_SEL_REG, PVT_DBIAS_CHANNEL0_CFG, PVT_CHANNEL0_CFG, PVT_DBIAS_CHANNEL0_CFG_S);
+        SET_PERI_REG_BITS(PVT_DBIAS_CHANNEL1_SEL_REG, PVT_DBIAS_CHANNEL1_CFG, PVT_CHANNEL1_CFG, PVT_DBIAS_CHANNEL1_CFG_S);
+        SET_PERI_REG_BITS(PVT_DBIAS_CHANNEL2_SEL_REG, PVT_DBIAS_CHANNEL2_CFG, PVT_CHANNEL2_CFG, PVT_DBIAS_CHANNEL2_CFG_S);  // Configure filter threshold for avoiding auto-dbias overly sensitive regulation
+        SET_PERI_REG_BITS(PVT_DBIAS_CMD0_REG, PVT_DBIAS_CMD0_PVT, PVT_CMD0, PVT_DBIAS_CMD0_PVT_S);
+        SET_PERI_REG_BITS(PVT_DBIAS_CMD1_REG, PVT_DBIAS_CMD1_PVT, PVT_CMD1, PVT_DBIAS_CMD1_PVT_S);
+        SET_PERI_REG_BITS(PVT_DBIAS_CMD2_REG, PVT_DBIAS_CMD2_PVT, PVT_CMD2, PVT_DBIAS_CMD2_PVT_S);                          // Configure auto-dbias adjust property, such as adjusting step
+        SET_PERI_REG_MASK(PMU_HP_ACTIVE_HP_REGULATOR0_REG, PMU_DIG_DBIAS_INIT);                                             // Start calibration @HP_CALI_DBIAS_DEFAULT
+        SET_PERI_REG_BITS(PVT_DBIAS_TIMER_REG, PVT_TIMER_TARGET, PVT_TARGET, PVT_TIMER_TARGET_S);                           // Configure auto-dbias voltage regulation cycle
+
+        SET_PERI_REG_BITS(HP_SYS_CLKRST_PERI_CLK_CTRL24_REG, HP_SYS_CLKRST_REG_PVT_CLK_DIV_NUM, PVT_CLK_DIV, HP_SYS_CLKRST_REG_PVT_CLK_DIV_NUM_S);                       // PVT function clock divider number
+        SET_PERI_REG_BITS(HP_SYS_CLKRST_PERI_CLK_CTRL25_REG, HP_SYS_CLKRST_REG_PVT_PERI_GROUP_CLK_DIV_NUM, PVT_CLK_DIV, HP_SYS_CLKRST_REG_PVT_PERI_GROUP_CLK_DIV_NUM_S); // PVT function clock divider number
+        SET_PERI_REG_MASK(HP_SYS_CLKRST_PERI_CLK_CTRL24_REG, HP_SYS_CLKRST_REG_PVT_CLK_EN);
+        SET_PERI_REG_MASK(HP_SYS_CLKRST_PERI_CLK_CTRL25_REG, HP_SYS_CLKRST_REG_PVT_PERI_GROUP1_CLK_EN);
+        SET_PERI_REG_MASK(HP_SYS_CLKRST_PERI_CLK_CTRL25_REG, HP_SYS_CLKRST_REG_PVT_PERI_GROUP2_CLK_EN);
+        SET_PERI_REG_MASK(HP_SYS_CLKRST_PERI_CLK_CTRL25_REG, HP_SYS_CLKRST_REG_PVT_PERI_GROUP3_CLK_EN);
+        SET_PERI_REG_MASK(HP_SYS_CLKRST_PERI_CLK_CTRL25_REG, HP_SYS_CLKRST_REG_PVT_PERI_GROUP4_CLK_EN);
+
+        /*config for pvt cell: unit0; site3; vt1*/
+        SET_PERI_REG_MASK(PVT_CLK_CFG_REG, PVT_MONITOR_CLK_PVT_EN); // Once enable cannot be closed
+        esp_rom_delay_us(100);
+        SET_PERI_REG_BITS(PVT_COMB_PD_SITE3_UNIT0_VT1_CONF2_REG, PVT_MONITOR_EDG_MOD_VT1_PD_SITE3_UNIT0, PVT_EDG_MODE, PVT_MONITOR_EDG_MOD_VT1_PD_SITE3_UNIT0_S);  // Select edge_mode
+        SET_PERI_REG_BITS(PVT_COMB_PD_SITE3_UNIT0_VT1_CONF1_REG, PVT_DELAY_LIMIT_VT1_PD_SITE3_UNIT0, PVT_DELAY_NUM_HIGH, PVT_DELAY_LIMIT_VT1_PD_SITE3_UNIT0_S);    // The threshold for determining whether the voltage is too high
+        SET_PERI_REG_BITS(PVT_COMB_PD_SITE3_UNIT1_VT1_CONF1_REG, PVT_DELAY_LIMIT_VT1_PD_SITE3_UNIT1, PVT_DELAY_NUM_LOW, PVT_DELAY_LIMIT_VT1_PD_SITE3_UNIT1_S);     // The threshold for determining whether the voltage is too low
+
+        /*config lp offset for pvt func*/
+        uint8_t lp_hp_gap = get_lp_hp_gap();
+        set_pvt_hp_lp_gap(lp_hp_gap);
+    } else {
+        ESP_HW_LOGW(TAG, "blk_version is less than 2, pvt auto dbias init not supported in efuse.");
+    }
+}
+
+void pvt_func_enable(bool enable)
+{
+    uint32_t blk_version = efuse_hal_blk_version();
+    if (blk_version >= 2){
+
+        if (enable) {
+            SET_PERI_REG_MASK(HP_SYS_CLKRST_REF_CLK_CTRL2_REG, HP_SYS_CLKRST_REG_REF_160M_CLK_EN);
+            SET_PERI_REG_MASK(HP_SYS_CLKRST_SOC_CLK_CTRL1_REG, HP_SYS_CLKRST_REG_PVT_SYS_CLK_EN);
+            SET_PERI_REG_MASK(HP_SYS_CLKRST_PERI_CLK_CTRL24_REG, HP_SYS_CLKRST_REG_PVT_CLK_EN);
+            SET_PERI_REG_MASK(HP_SYS_CLKRST_PERI_CLK_CTRL25_REG, HP_SYS_CLKRST_REG_PVT_PERI_GROUP1_CLK_EN);
+            SET_PERI_REG_MASK(HP_SYS_CLKRST_PERI_CLK_CTRL25_REG, HP_SYS_CLKRST_REG_PVT_PERI_GROUP2_CLK_EN);
+            SET_PERI_REG_MASK(HP_SYS_CLKRST_PERI_CLK_CTRL25_REG, HP_SYS_CLKRST_REG_PVT_PERI_GROUP3_CLK_EN);
+            SET_PERI_REG_MASK(HP_SYS_CLKRST_PERI_CLK_CTRL25_REG, HP_SYS_CLKRST_REG_PVT_PERI_GROUP4_CLK_EN);
+            SET_PERI_REG_MASK(PMU_HP_ACTIVE_HP_REGULATOR0_REG, PMU_DIG_DBIAS_INIT);                        // Start calibration @HP_CALI_DBIAS_DEFAULT
+            SET_PERI_REG_MASK(PVT_CLK_CFG_REG, PVT_MONITOR_CLK_PVT_EN);                                    // Once enable cannot be closed
+            SET_PERI_REG_MASK(PVT_COMB_PD_SITE3_UNIT0_VT1_CONF1_REG, PVT_MONITOR_EN_VT1_PD_SITE3_UNIT0);   // Enable pvt clk
+            esp_rom_delay_us(1000);
+            CLEAR_PERI_REG_MASK(PMU_HP_ACTIVE_HP_REGULATOR0_REG, PMU_DIG_REGULATOR0_DBIAS_SEL);            // Hand over control of dbias to pvt
+            CLEAR_PERI_REG_MASK(PMU_HP_ACTIVE_HP_REGULATOR0_REG, PMU_DIG_DBIAS_INIT);                      // Must clear @HP_CALI_DBIAS_DEFAULT
+            SET_PERI_REG_MASK(PVT_DBIAS_TIMER_REG, PVT_TIMER_EN);                                          // Enable auto dbias
+        } else {
+            uint32_t pvt_dcmvset = pvt_get_dcmvset();
+            uint32_t pvt_lpdbias = pvt_get_lp_dbias();                                                    // Update pvt_cali_dbias
+            SET_PERI_REG_BITS(PMU_HP_ACTIVE_BIAS_REG, PMU_HP_ACTIVE_DCM_VSET, pvt_dcmvset, PMU_HP_ACTIVE_DCM_VSET_S);
+            SET_PERI_REG_BITS(PMU_HP_SLEEP_LP_REGULATOR0_REG, PMU_HP_SLEEP_LP_REGULATOR_DBIAS, pvt_lpdbias, PMU_HP_SLEEP_LP_REGULATOR_DBIAS_S);
+            SET_PERI_REG_MASK(PMU_HP_ACTIVE_HP_REGULATOR0_REG, PMU_DIG_REGULATOR0_DBIAS_SEL);              // Hand over control of dbias to pmu
+            CLEAR_PERI_REG_MASK(HP_SYS_CLKRST_PERI_CLK_CTRL24_REG, HP_SYS_CLKRST_REG_PVT_CLK_EN);
+        }
+    } else {
+        ESP_HW_LOGD(TAG, "blk_version is less than 2, pvt function not supported in efuse.");
+    }
+}
+
+#endif

components/esp_hw_support/port/esp32p4/pmu_sleep.c

@@ -201,7 +201,7 @@ const pmu_sleep_config_t* pmu_sleep_config_default(
             analog_default.lp_sys[LP(SLEEP)].analog.bias_sleep = PMU_BIASSLP_SLEEP_ON;
             analog_default.lp_sys[LP(SLEEP)].analog.dbg_atten = PMU_DBG_ATTEN_ACTIVE_DEFAULT;
 #if !CONFIG_ESP_SLEEP_KEEP_DCDC_ALWAYS_ON
-            analog_default.lp_sys[LP(SLEEP)].analog.dbias = LP_CALI_DBIAS;
+            analog_default.lp_sys[LP(SLEEP)].analog.dbias = LP_CALI_ACTIVE_DBIAS_DEFAULT;
 #endif
         }
 

components/esp_hw_support/port/esp32p4/private_include/pmu_param.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2023-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -18,7 +18,7 @@ extern "C" {
 
 #define HP_CALI_ACTIVE_DCM_VSET_DEFAULT     27 // For DCDC, about 1.25v
 #define HP_CALI_ACTIVE_DBIAS_DEFAULT        24 // For HP regulator
-#define LP_CALI_DBIAS                       29 // For LP regulator
+#define LP_CALI_ACTIVE_DBIAS_DEFAULT        29 // For LP regulator
 
 // FOR  XTAL FORCE PU IN SLEEP
 #define PMU_PD_CUR_SLEEP_ON    0
@@ -53,6 +53,9 @@ extern "C" {
 #define PMU_DBG_ATTEN_DEEPSLEEP_DEFAULT 12
 #define PMU_LP_DBIAS_DEEPSLEEP_0V7      23
 
+uint32_t get_act_hp_dbias(void);
+uint32_t get_act_lp_dbias(void);
+
 typedef struct {
     pmu_hp_dig_power_reg_t  dig_power;
     pmu_hp_clk_power_reg_t  clk_power;

components/esp_hw_support/port/esp32p4/rtc_clk_init.c

@@ -53,11 +53,22 @@ void rtc_clk_init(rtc_clk_config_t cfg)
     REGI2C_WRITE_MASK(I2C_BIAS, I2C_BIAS_OR_FORCE_XPD_IPH, 0);
     REGI2C_WRITE_MASK(I2C_BIAS, I2C_BIAS_OR_FORCE_XPD_VGATE_BUF, 0);
 
-    pmu_ll_lp_set_regulator_dbias(&PMU, PMU_MODE_LP_ACTIVE, LP_CALI_DBIAS);
+    uint32_t hp_dbias = get_act_hp_dbias();
+    uint32_t lp_dbias = get_act_lp_dbias();
+    pmu_ll_hp_set_regulator_xpd(&PMU, PMU_MODE_HP_ACTIVE, true);
+    pmu_ll_hp_set_regulator_dbias(&PMU, PMU_MODE_HP_ACTIVE, hp_dbias);
+    pmu_ll_lp_set_regulator_dbias(&PMU, PMU_MODE_LP_ACTIVE, lp_dbias);
+
+    uint32_t pvt_hp_dcmvset = GET_PERI_REG_BITS2(PMU_HP_ACTIVE_HP_REGULATOR0_REG, PMU_HP_DBIAS_VOL_V, PMU_HP_DBIAS_VOL_S);
+    uint32_t hp_dcmvset =  HP_CALI_ACTIVE_DCM_VSET_DEFAULT;
+    if (pvt_hp_dcmvset > hp_dcmvset) {
+        hp_dcmvset = pvt_hp_dcmvset;
+    }
     // Switch to DCDC
     pmu_ll_set_dcdc_en(&PMU, true);
     pmu_ll_set_dcdc_switch_force_power_down(&PMU, false);
-    pmu_ll_hp_set_dcm_vset(&PMU, PMU_MODE_HP_ACTIVE, HP_CALI_ACTIVE_DCM_VSET_DEFAULT);
+    pmu_ll_hp_set_dcm_vset(&PMU, PMU_MODE_HP_ACTIVE, hp_dcmvset);
+    SET_PERI_REG_MASK(PMU_HP_ACTIVE_HP_REGULATOR0_REG, PMU_DIG_REGULATOR0_DBIAS_SEL); // Hand over control of dbias to pmu
     esp_rom_delay_us(1000);
     pmu_ll_hp_set_regulator_xpd(&PMU, PMU_MODE_HP_ACTIVE, false);
 

components/esp_hw_support/sleep_modes.c

@@ -20,6 +20,7 @@
 #include "esp_private/esp_sleep_internal.h"
 #include "esp_private/esp_timer_private.h"
 #include "esp_private/rtc_clk.h"
+#include "soc/rtc.h"
 #include "esp_private/sleep_event.h"
 #include "esp_private/system_internal.h"
 #include "esp_private/io_mux.h"
@@ -741,6 +742,9 @@ static SLEEP_FN_ATTR void misc_modules_sleep_prepare(uint32_t sleep_flags, bool
         regi2c_tsens_reg_read();
 #endif
     }
+#if CONFIG_ESP_ENABLE_PVT
+    pvt_func_enable(false);
+#endif
 
     if (s_sleep_sub_mode_ref_cnt[ESP_SLEEP_USE_ADC_TSEN_MONITOR_MODE] == 0) {
         // TODO: IDF-7370
@@ -753,6 +757,10 @@ static SLEEP_FN_ATTR void misc_modules_sleep_prepare(uint32_t sleep_flags, bool
  */
 static SLEEP_FN_ATTR void misc_modules_wake_prepare(uint32_t sleep_flags)
 {
+#if CONFIG_ESP_ENABLE_PVT
+    pvt_func_enable(true);
+#endif
+
 #if CONFIG_PM_POWER_DOWN_PERIPHERAL_IN_LIGHT_SLEEP
     if (sleep_flags & PMU_SLEEP_PD_TOP) {
         // There is no driver to manage the flashboot watchdog, and it is definitely be in off state when

components/esp_hw_support/sleep_system_peripheral.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -121,6 +121,16 @@ esp_err_t sleep_pau_retention_init(void)
 }
 #endif
 
+#if CONFIG_ESP_ENABLE_PVT
+esp_err_t sleep_pvt_retention_init(void)
+{
+    esp_err_t err = sleep_retention_entries_create(pvt_regs_retention, ARRAY_SIZE(pvt_regs_retention), REGDMA_LINK_PRI_SYS_PERIPH_LOW, SLEEP_RETENTION_MODULE_SYS_PERIPH);
+    ESP_RETURN_ON_ERROR(err, TAG, "failed to allocate memory for system (PVT) retention");
+    ESP_LOGI(TAG, "PVT sleep retention initialization");
+    return ESP_OK;
+}
+#endif
+
 static __attribute__((unused)) esp_err_t sleep_sys_periph_retention_init(void *arg)
 {
     esp_err_t err;
@@ -152,6 +162,11 @@ static __attribute__((unused)) esp_err_t sleep_sys_periph_retention_init(void *a
     if(err) goto error;
 #if SOC_PAU_IN_TOP_DOMAIN
     err = sleep_pau_retention_init();
+    if(err) goto error;
+#endif
+#if CONFIG_ESP_ENABLE_PVT
+    err = sleep_pvt_retention_init();
+    if(err) goto error;
 #endif
 
 error:

components/esp_system/port/soc/esp32p4/clk.c

@@ -380,7 +380,10 @@ __attribute__((weak)) void esp_perip_clk_init(void)
         REG_CLR_BIT(HP_SYS_CLKRST_REF_CLK_CTRL1_REG, HP_SYS_CLKRST_REG_REF_50M_CLK_EN);
         REG_CLR_BIT(HP_SYS_CLKRST_REF_CLK_CTRL1_REG, HP_SYS_CLKRST_REG_REF_25M_CLK_EN);
         // 240M CLK is for Key Management use, should not be gated
+#if !CONFIG_ESP_ENABLE_PVT
         REG_CLR_BIT(HP_SYS_CLKRST_REF_CLK_CTRL2_REG, HP_SYS_CLKRST_REG_REF_160M_CLK_EN);
+#endif
+        // 160M CLK is for PVT use, should not be gated
         REG_CLR_BIT(HP_SYS_CLKRST_REF_CLK_CTRL2_REG, HP_SYS_CLKRST_REG_REF_120M_CLK_EN);
         REG_CLR_BIT(HP_SYS_CLKRST_REF_CLK_CTRL2_REG, HP_SYS_CLKRST_REG_REF_80M_CLK_EN);
         REG_CLR_BIT(HP_SYS_CLKRST_REF_CLK_CTRL2_REG, HP_SYS_CLKRST_REG_REF_20M_CLK_EN);

components/hal/esp32p4/include/hal/efuse_ll.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -146,6 +146,21 @@ __attribute__((always_inline)) static inline uint32_t efuse_ll_get_controller_st
     return EFUSE.status.state;
 }
 
+__attribute__((always_inline)) static inline uint32_t efuse_ll_get_active_hp_dbias(void)
+{
+    return EFUSE.rd_mac_sys_4.active_hp_dbias;
+}
+
+__attribute__((always_inline)) static inline uint32_t efuse_ll_get_active_lp_dbias(void)
+{
+    return EFUSE.rd_mac_sys_4.active_lp_dbias;
+}
+
+__attribute__((always_inline)) static inline int32_t efuse_ll_get_dbias_vol_gap(void)
+{
+    return EFUSE.rd_mac_sys_5.lp_dcdc_dbias_vol_gap;
+}
+
 /******************* eFuse control functions *************************/
 
 #ifdef __cplusplus

components/soc/esp32p4/include/soc/Kconfig.soc_caps.in

@@ -235,6 +235,10 @@ config SOC_PMU_SUPPORTED
     bool
     default y
 
+config SOC_PMU_PVT_SUPPORTED
+    bool
+    default y
+
 config SOC_DCDC_SUPPORTED
     bool
     default y

components/soc/esp32p4/include/soc/soc_caps.h

@@ -75,6 +75,7 @@
 #define SOC_VBAT_SUPPORTED              1
 #define SOC_APM_SUPPORTED               1
 #define SOC_PMU_SUPPORTED               1
+#define SOC_PMU_PVT_SUPPORTED           1
 #define SOC_DCDC_SUPPORTED              1
 #define SOC_PAU_SUPPORTED               1     //TODO: IDF-7531
 #define SOC_LP_TIMER_SUPPORTED          1

components/soc/esp32p4/include/soc/system_periph_retention.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2023-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -95,6 +95,16 @@ extern const regdma_entries_config_t systimer_regs_retention[SYSTIMER_RETENTION_
 #define PAU_RETENTION_LINK_LEN 1
 extern const regdma_entries_config_t pau_regs_retention[PAU_RETENTION_LINK_LEN];
 
+/**
+ * @brief Provide access to pvt configuration registers retention
+ * context definition.
+ *
+ * This is an internal function of the sleep retention driver, and is not
+ * useful for external use.
+ */
+#define PVT_RETENTION_LINK_LEN   1
+extern const regdma_entries_config_t pvt_regs_retention[PVT_RETENTION_LINK_LEN];
+
 #ifdef __cplusplus
 }
 #endif

components/soc/esp32p4/register/soc/pvt_reg.h

@@ -1,5 +1,5 @@
 /**
- * SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2023-2025 Espressif Systems (Shanghai) CO LTD
  *
  *  SPDX-License-Identifier: Apache-2.0
  */
@@ -363,10 +363,12 @@ extern "C" {
 /** PVT_DBIAS_CMD0 : R/W; bitpos: [16:0]; default: 0;
  *  needs field desc
  */
-#define PVT_DBIAS_CMD0    0x0001FFFFU
+#define PVT_DBIAS_CMD0_OFFSET_FLAG 1
-#define PVT_DBIAS_CMD0_M  (PVT_DBIAS_CMD0_V << PVT_DBIAS_CMD0_S)
+#define PVT_DBIAS_CMD0_OFFSET_FLAG_S 16
-#define PVT_DBIAS_CMD0_V  0x0001FFFFU
+#define PVT_DBIAS_CMD0_OFFSET_VALUE 0x1F
-#define PVT_DBIAS_CMD0_S  0
+#define PVT_DBIAS_CMD0_OFFSET_VALUE_S 11
+#define PVT_DBIAS_CMD0_PVT 0x7FF
+#define PVT_DBIAS_CMD0_PVT_S 0
 
 /** PVT_DBIAS_CMD1_REG register
  *  needs desc
@@ -375,10 +377,12 @@ extern "C" {
 /** PVT_DBIAS_CMD1 : R/W; bitpos: [16:0]; default: 0;
  *  needs field desc
  */
-#define PVT_DBIAS_CMD1    0x0001FFFFU
+#define PVT_DBIAS_CMD1_OFFSET_FLAG 1
-#define PVT_DBIAS_CMD1_M  (PVT_DBIAS_CMD1_V << PVT_DBIAS_CMD1_S)
+#define PVT_DBIAS_CMD1_OFFSET_FLAG_S 16
-#define PVT_DBIAS_CMD1_V  0x0001FFFFU
+#define PVT_DBIAS_CMD1_OFFSET_VALUE 0x1F
-#define PVT_DBIAS_CMD1_S  0
+#define PVT_DBIAS_CMD1_OFFSET_VALUE_S 11
+#define PVT_DBIAS_CMD1_PVT 0x7FF
+#define PVT_DBIAS_CMD1_PVT_S 0
 
 /** PVT_DBIAS_CMD2_REG register
  *  needs desc
@@ -387,10 +391,12 @@ extern "C" {
 /** PVT_DBIAS_CMD2 : R/W; bitpos: [16:0]; default: 0;
  *  needs field desc
  */
-#define PVT_DBIAS_CMD2    0x0001FFFFU
+#define PVT_DBIAS_CMD2_OFFSET_FLAG 1
-#define PVT_DBIAS_CMD2_M  (PVT_DBIAS_CMD2_V << PVT_DBIAS_CMD2_S)
+#define PVT_DBIAS_CMD2_OFFSET_FLAG_S 16
-#define PVT_DBIAS_CMD2_V  0x0001FFFFU
+#define PVT_DBIAS_CMD2_OFFSET_VALUE 0x1F
-#define PVT_DBIAS_CMD2_S  0
+#define PVT_DBIAS_CMD2_OFFSET_VALUE_S 11
+#define PVT_DBIAS_CMD2_PVT 0x7FF
+#define PVT_DBIAS_CMD2_PVT_S 0
 
 /** PVT_DBIAS_CMD3_REG register
  *  needs desc

components/soc/esp32p4/register/soc/pvt_struct.h

@@ -1,5 +1,5 @@
 /**
- * SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2023-2025 Espressif Systems (Shanghai) CO LTD
  *
  *  SPDX-License-Identifier: Apache-2.0
  */
@@ -347,10 +347,18 @@ typedef union {
  */
 typedef union {
     struct {
-        /** dbias_cmd0 : R/W; bitpos: [16:0]; default: 0;
+        /** dbias_cmd0 : R/W; bitpos: [10:0]; default: 0;
          *  needs field desc
          */
-        uint32_t dbias_cmd0:17;
+        uint32_t dbias_cmd0_pvt:11;
+        /** dbias_cmd0_offset_value : R/W; bitpos: [15:11]; default: 0;
+         *  needs field desc
+         */
+        uint32_t dbias_cmd0_offset_value:5;
+        /** dbias_cmd0_offset_flag : R/W; bitpos: [16]; default: 0;
+         *  needs field desc
+         */
+        uint32_t dbias_cmd0_offset_flag:1;
         uint32_t reserved_17:15;
     };
     uint32_t val;
@@ -361,10 +369,18 @@ typedef union {
  */
 typedef union {
     struct {
-        /** dbias_cmd1 : R/W; bitpos: [16:0]; default: 0;
+        /** dbias_cmd1 : R/W; bitpos: [10:0]; default: 0;
          *  needs field desc
          */
-        uint32_t dbias_cmd1:17;
+        uint32_t dbias_cmd1_pvt:11;
+        /** dbias_cmd1_offset_value : R/W; bitpos: [15:11]; default: 0;
+         *  needs field desc
+         */
+        uint32_t dbias_cmd1_offset_value:5;
+        /** dbias_cmd1_offset_flag : R/W; bitpos: [16]; default: 0;
+         *  needs field desc
+         */
+        uint32_t dbias_cmd1_offset_flag:1;
         uint32_t reserved_17:15;
     };
     uint32_t val;
@@ -375,10 +391,18 @@ typedef union {
  */
 typedef union {
     struct {
-        /** dbias_cmd2 : R/W; bitpos: [16:0]; default: 0;
+        /** dbias_cmd2 : R/W; bitpos: [10:0]; default: 0;
          *  needs field desc
          */
-        uint32_t dbias_cmd2:17;
+        uint32_t dbias_cmd2_pvt:11;
+        /** dbias_cmd2_offset_value : R/W; bitpos: [15:11]; default: 0;
+         *  needs field desc
+         */
+        uint32_t dbias_cmd2_offset_value:5;
+        /** dbias_cmd2_offset_flag : R/W; bitpos: [16]; default: 0;
+         *  needs field desc
+         */
+        uint32_t dbias_cmd2_offset_flag:1;
         uint32_t reserved_17:15;
     };
     uint32_t val;

components/soc/esp32p4/system_retention_periph.c

@@ -23,6 +23,7 @@
 #include "soc/timer_periph.h"
 #include "soc/uart_reg.h"
 #include "esp32p4/rom/cache.h"
+#include "soc/pvt_reg.h"
 
 /* Interrupt Matrix Registers Context */
 #define N_REGS_INTR_CORE0()    (((INTERRUPT_CORE0_CLOCK_GATE_REG - DR_REG_INTERRUPT_CORE0_BASE) / 4) + 1)
@@ -202,3 +203,10 @@ const regdma_entries_config_t pau_regs_retention[] = {
     [0] = { .config = REGDMA_LINK_CONTINUOUS_INIT(REGDMA_PAU_LINK(0x0),  DR_REG_PAU_BASE,               DR_REG_PAU_BASE,    N_REGS_PAU(),       0, 0), .owner = ENTRY(0) },  /* pau */
 };
 _Static_assert(ARRAY_SIZE(pau_regs_retention) == HP_SYSTEM_RETENTION_LINK_LEN, "Inconsistent PAU retention link length definitions");
+
+/* PVT Registers Context */
+#define N_REGS_PVT    (((PVT_COMB_PD_SITE3_UNIT0_VT1_CONF2_REG - DR_REG_PVT_MONITOR_BASE) / 4) + 1)
+const regdma_entries_config_t pvt_regs_retention[] = {
+    [0] = { .config = REGDMA_LINK_CONTINUOUS_INIT(REGDMA_PVT_LINK(0x00), DR_REG_PVT_MONITOR_BASE, DR_REG_PVT_MONITOR_BASE, N_REGS_PVT, 0, 0), .owner = ENTRY(0) | ENTRY(2) },
+};
+_Static_assert(ARRAY_SIZE(pvt_regs_retention) == PVT_RETENTION_LINK_LEN, "Inconsistent PVT retention link length definitions");

components/soc/include/soc/regdma.h

@@ -34,6 +34,7 @@ extern "C" {
 #define REGDMA_MODEMSYSCON_LINK(_pri)       ((0x02 << 8) | _pri)
 #define REGDMA_MODEMLPCON_LINK(_pri)        ((0x03 << 8) | _pri)
 #define REGDMA_PAU_LINK(_pri)               ((0x04 << 8) | _pri)
+#define REGDMA_PVT_LINK(_pri)               ((0x05 << 8) | _pri)
 
 #define REGDMA_CACHE_LINK(_pri)             ((0x0c << 8) | _pri)
 #define REGDMA_INTMTX_LINK(_pri)            ((0x0d << 8) | _pri)
@@ -63,6 +64,7 @@ extern "C" {
 #define REGDMA_LEDC_LINK(_pri)              ((0x24 << 8) | _pri)
 #define REGDMA_PCNT_LINK(_pri)              ((0x25 << 8) | _pri)
 #define REGDMA_MCPWM_LINK(_pri)             ((0x26 << 8) | _pri)
+
 #define REGDMA_MODEM_FE_LINK(_pri)          ((0xFF << 8) | _pri)
 
 #define REGDMA_LINK_PRI_SYS_CLK                 REGDMA_LINK_PRI_0