Merge branch 'fix/fix_s2_s3_rtc_iomux_clock_management_v5.1' into 'release/v5.1'

fix(esp_hw_support): fix esp32s2/esp32s3 RTC IOMUX clock management (v5.1)

See merge request espressif/esp-idf!37169

components/driver/gpio/gpio.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -23,6 +23,7 @@
 #include "hal/gpio_hal.h"
 #include "esp_rom_gpio.h"
 #include "esp_private/esp_gpio_reserve.h"
+#include "esp_private/io_mux.h"
 
 #if (SOC_RTCIO_PIN_COUNT > 0)
 #include "hal/rtc_io_hal.h"
@@ -622,6 +623,11 @@ esp_err_t gpio_wakeup_enable(gpio_num_t gpio_num, gpio_int_type_t intr_type)
     if ((intr_type == GPIO_INTR_LOW_LEVEL) || (intr_type == GPIO_INTR_HIGH_LEVEL)) {
 #if SOC_RTCIO_WAKE_SUPPORTED
         if (rtc_gpio_is_valid_gpio(gpio_num)) {
+#if SOC_LP_IO_CLOCK_IS_INDEPENDENT
+            // LP_IO Wake-up function does not depend on LP_IO Matrix, but uses its clock to
+            // sample the wake-up signal, we need to enable the LP_IO clock here.
+            io_mux_enable_lp_io_clock(gpio_num, true);
+#endif
             ret = rtc_gpio_wakeup_enable(gpio_num, intr_type);
         }
 #endif
@@ -647,6 +653,9 @@ esp_err_t gpio_wakeup_disable(gpio_num_t gpio_num)
 #if SOC_RTCIO_WAKE_SUPPORTED
     if (rtc_gpio_is_valid_gpio(gpio_num)) {
         ret = rtc_gpio_wakeup_disable(gpio_num);
+#if SOC_LP_IO_CLOCK_IS_INDEPENDENT
+        io_mux_enable_lp_io_clock(gpio_num, false);
+#endif
     }
 #endif
     portENTER_CRITICAL(&gpio_context.gpio_spinlock);
@@ -974,6 +983,9 @@ esp_err_t gpio_deep_sleep_wakeup_enable(gpio_num_t gpio_num, gpio_int_type_t int
         return ESP_ERR_INVALID_ARG;
     }
     portENTER_CRITICAL(&gpio_context.gpio_spinlock);
+#if SOC_LP_IO_CLOCK_IS_INDEPENDENT
+    io_mux_enable_lp_io_clock(gpio_num, true);
+#endif
     gpio_hal_deepsleep_wakeup_enable(gpio_context.gpio_hal, gpio_num, intr_type);
 #if CONFIG_ESP_SLEEP_GPIO_RESET_WORKAROUND || CONFIG_PM_SLP_DISABLE_GPIO
     gpio_hal_sleep_sel_dis(gpio_context.gpio_hal, gpio_num);
@@ -992,6 +1004,9 @@ esp_err_t gpio_deep_sleep_wakeup_disable(gpio_num_t gpio_num)
     gpio_hal_deepsleep_wakeup_disable(gpio_context.gpio_hal, gpio_num);
 #if CONFIG_ESP_SLEEP_GPIO_RESET_WORKAROUND || CONFIG_PM_SLP_DISABLE_GPIO
     gpio_hal_sleep_sel_en(gpio_context.gpio_hal, gpio_num);
+#endif
+#if SOC_LP_IO_CLOCK_IS_INDEPENDENT
+    io_mux_enable_lp_io_clock(gpio_num, false);
 #endif
     portEXIT_CRITICAL(&gpio_context.gpio_spinlock);
     return ESP_OK;

components/driver/gpio/rtc_io.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2019-2023 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2019-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -8,6 +8,8 @@
 #include "esp_log.h"
 #include "esp_err.h"
 #include "esp_check.h"
+#include "esp_private/periph_ctrl.h"
+#include "esp_private/io_mux.h"
 #include "freertos/FreeRTOS.h"
 #include "freertos/semphr.h"
 #include "freertos/timers.h"
@@ -44,6 +46,9 @@ esp_err_t rtc_gpio_init(gpio_num_t gpio_num)
 {
     ESP_RETURN_ON_FALSE(rtc_gpio_is_valid_gpio(gpio_num), ESP_ERR_INVALID_ARG, RTCIO_TAG, "RTCIO number error");
     RTCIO_ENTER_CRITICAL();
+#if SOC_LP_IO_CLOCK_IS_INDEPENDENT
+    io_mux_enable_lp_io_clock(gpio_num, true);
+#endif
     rtcio_hal_function_select(rtc_io_number_get(gpio_num), RTCIO_FUNC_RTC);
     RTCIO_EXIT_CRITICAL();
 
@@ -56,6 +61,10 @@ esp_err_t rtc_gpio_deinit(gpio_num_t gpio_num)
     RTCIO_ENTER_CRITICAL();
     // Select Gpio as Digital Gpio
     rtcio_hal_function_select(rtc_io_number_get(gpio_num), RTCIO_FUNC_DIGITAL);
+
+#if SOC_LP_IO_CLOCK_IS_INDEPENDENT
+    io_mux_force_disable_lp_io_clock(gpio_num);
+#endif
     RTCIO_EXIT_CRITICAL();
 
     return ESP_OK;

components/esp_hw_support/include/esp_private/io_mux.h

@@ -1,13 +1,17 @@
 /*
- * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
 
 #pragma once
 
+#include <stdbool.h>
 #include "esp_err.h"
+#include "hal/gpio_types.h"
 #include "soc/clk_tree_defs.h"
+#include "soc/soc_caps.h"
+#include "soc/io_mux_reg.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -26,6 +30,26 @@ extern "C" {
  */
 esp_err_t io_mux_set_clock_source(soc_module_clk_t clk_src);
 
+#if SOC_LP_IO_CLOCK_IS_INDEPENDENT
+typedef struct {
+    uint8_t rtc_io_enabled_cnt[MAX_RTC_GPIO_NUM];
+    uint32_t rtc_io_using_mask;
+} rtc_io_status_t;
+
+/**
+ * Enable/Disable LP_IO peripheral clock.
+ * @param gpio_num GPIO number
+ * @param enable   true to enable the clock / false to disable the clock
+ */
+void io_mux_enable_lp_io_clock(gpio_num_t gpio_num, bool enable);
+
+/**
+ * Force disable one LP_IO to clock dependency
+ * @param gpio_num GPIO number
+ */
+void io_mux_force_disable_lp_io_clock(gpio_num_t gpio_num);
+#endif
+
 #ifdef __cplusplus
 }
 #endif

components/esp_hw_support/port/esp32s2/io_mux.c

@@ -1,13 +1,67 @@
 /*
- * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
 
+#include "sdkconfig.h"
+#include "esp_attr.h"
+#include "freertos/FreeRTOS.h"
 #include "esp_private/io_mux.h"
+#include "hal/rtc_io_ll.h"
+
+#define RTCIO_RCC_ATOMIC() \
+    for (int _rc_cnt = 1; \
+    _rc_cnt ? (portENTER_CRITICAL(&rtc_spinlock), 1) : 0;     \
+    portEXIT_CRITICAL(&rtc_spinlock), _rc_cnt--)
 
 esp_err_t io_mux_set_clock_source(soc_module_clk_t clk_src)
 {
     // IO MUX clock source is not selectable
     return ESP_OK;
 }
+
+extern portMUX_TYPE rtc_spinlock;
+static portMUX_TYPE s_io_mux_spinlock = portMUX_INITIALIZER_UNLOCKED;
+
+static rtc_io_status_t s_rtc_io_status = {
+    .rtc_io_enabled_cnt = { 0 },
+    .rtc_io_using_mask = 0
+};
+
+void io_mux_enable_lp_io_clock(gpio_num_t gpio_num, bool enable)
+{
+    portENTER_CRITICAL(&s_io_mux_spinlock);
+    if (enable) {
+        if (s_rtc_io_status.rtc_io_enabled_cnt[gpio_num] == 0) {
+            s_rtc_io_status.rtc_io_using_mask |= (1ULL << gpio_num);
+        }
+        s_rtc_io_status.rtc_io_enabled_cnt[gpio_num]++;
+    } else if (!enable && (s_rtc_io_status.rtc_io_enabled_cnt[gpio_num] > 0)) {
+        s_rtc_io_status.rtc_io_enabled_cnt[gpio_num]--;
+        if (s_rtc_io_status.rtc_io_enabled_cnt[gpio_num] == 0) {
+            s_rtc_io_status.rtc_io_using_mask &= ~(1ULL << gpio_num);
+        }
+    }
+    RTCIO_RCC_ATOMIC() {
+        if (s_rtc_io_status.rtc_io_using_mask == 0) {
+            rtcio_ll_enable_io_clock(false);
+        } else {
+            rtcio_ll_enable_io_clock(true);
+        }
+    }
+    portEXIT_CRITICAL(&s_io_mux_spinlock);
+}
+
+void io_mux_force_disable_lp_io_clock(gpio_num_t gpio_num)
+{
+    portENTER_CRITICAL(&s_io_mux_spinlock);
+    s_rtc_io_status.rtc_io_enabled_cnt[gpio_num] = 0;
+    s_rtc_io_status.rtc_io_using_mask &= ~(1ULL << gpio_num);
+    if (s_rtc_io_status.rtc_io_using_mask == 0) {
+        RTCIO_RCC_ATOMIC() {
+            rtcio_ll_enable_io_clock(false);
+        }
+    }
+    portEXIT_CRITICAL(&s_io_mux_spinlock);
+}

components/esp_hw_support/port/esp32s3/io_mux.c

@@ -1,13 +1,67 @@
 /*
- * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
 
+#include "sdkconfig.h"
+#include "esp_attr.h"
+#include "freertos/FreeRTOS.h"
 #include "esp_private/io_mux.h"
+#include "hal/rtc_io_ll.h"
+
+#define RTCIO_RCC_ATOMIC() \
+    for (int _rc_cnt = 1; \
+    _rc_cnt ? (portENTER_CRITICAL(&rtc_spinlock), 1) : 0;     \
+    portEXIT_CRITICAL(&rtc_spinlock), _rc_cnt--)
 
 esp_err_t io_mux_set_clock_source(soc_module_clk_t clk_src)
 {
     // IO MUX clock source is not selectable
     return ESP_OK;
 }
+
+extern portMUX_TYPE rtc_spinlock;
+static portMUX_TYPE s_io_mux_spinlock = portMUX_INITIALIZER_UNLOCKED;
+
+static rtc_io_status_t s_rtc_io_status = {
+    .rtc_io_enabled_cnt = { 0 },
+    .rtc_io_using_mask = 0
+};
+
+void io_mux_enable_lp_io_clock(gpio_num_t gpio_num, bool enable)
+{
+    portENTER_CRITICAL(&s_io_mux_spinlock);
+    if (enable) {
+        if (s_rtc_io_status.rtc_io_enabled_cnt[gpio_num] == 0) {
+            s_rtc_io_status.rtc_io_using_mask |= (1ULL << gpio_num);
+        }
+        s_rtc_io_status.rtc_io_enabled_cnt[gpio_num]++;
+    } else if (!enable && (s_rtc_io_status.rtc_io_enabled_cnt[gpio_num] > 0)) {
+        s_rtc_io_status.rtc_io_enabled_cnt[gpio_num]--;
+        if (s_rtc_io_status.rtc_io_enabled_cnt[gpio_num] == 0) {
+            s_rtc_io_status.rtc_io_using_mask &= ~(1ULL << gpio_num);
+        }
+    }
+    RTCIO_RCC_ATOMIC() {
+        if (s_rtc_io_status.rtc_io_using_mask == 0) {
+            rtcio_ll_enable_io_clock(false);
+        } else {
+            rtcio_ll_enable_io_clock(true);
+        }
+    }
+    portEXIT_CRITICAL(&s_io_mux_spinlock);
+}
+
+void io_mux_force_disable_lp_io_clock(gpio_num_t gpio_num)
+{
+    portENTER_CRITICAL(&s_io_mux_spinlock);
+    s_rtc_io_status.rtc_io_enabled_cnt[gpio_num] = 0;
+    s_rtc_io_status.rtc_io_using_mask &= ~(1ULL << gpio_num);
+    if (s_rtc_io_status.rtc_io_using_mask == 0) {
+        RTCIO_RCC_ATOMIC() {
+            rtcio_ll_enable_io_clock(false);
+        }
+    }
+    portEXIT_CRITICAL(&s_io_mux_spinlock);
+}

components/esp_hw_support/port/esp32s3/rtc_clk.c

@@ -19,6 +19,7 @@
 #include "esp_hw_log.h"
 #include "hal/clk_tree_ll.h"
 #include "hal/regi2c_ctrl_ll.h"
+#include "hal/rtc_io_ll.h"
 #include "esp_private/regi2c_ctrl.h"
 #include "soc/regi2c_dig_reg.h"
 #include "soc/sens_reg.h"
@@ -65,7 +66,7 @@ void rtc_clk_32k_enable(bool enable)
 void rtc_clk_32k_enable_external(void)
 {
     PIN_INPUT_ENABLE(IO_MUX_GPIO15_REG);
-    SET_PERI_REG_MASK(SENS_SAR_PERI_CLK_GATE_CONF_REG, SENS_IOMUX_CLK_EN);
+    rtcio_ll_enable_io_clock(true);
     SET_PERI_REG_MASK(RTC_CNTL_PAD_HOLD_REG, RTC_CNTL_X32P_HOLD);
     clk_ll_xtal32k_enable(CLK_LL_XTAL32K_ENABLE_MODE_EXTERNAL);
 }

components/esp_hw_support/sleep_modes.c

@@ -15,8 +15,10 @@
 #include "esp_private/esp_clk_tree_common.h"
 #include "esp_private/esp_sleep_internal.h"
 #include "esp_private/esp_timer_private.h"
+#include "esp_private/rtc_clk.h"
 #include "esp_private/sleep_event.h"
 #include "esp_private/system_internal.h"
+#include "esp_private/io_mux.h"
 #include "esp_log.h"
 #include "esp_newlib.h"
 #include "esp_timer.h"
@@ -1587,6 +1589,9 @@ esp_err_t esp_sleep_enable_ext0_wakeup(gpio_num_t gpio_num, int level)
 static void ext0_wakeup_prepare(void)
 {
     int rtc_gpio_num = s_config.ext0_rtc_gpio_num;
+#if SOC_LP_IO_CLOCK_IS_INDEPENDENT
+    rtcio_ll_enable_io_clock(true);
+#endif
     rtcio_hal_ext0_set_wakeup_pin(rtc_gpio_num, s_config.ext0_trigger_level);
     rtcio_hal_function_select(rtc_gpio_num, RTCIO_FUNC_RTC);
     rtcio_hal_input_enable(rtc_gpio_num);
@@ -1716,6 +1721,9 @@ static void ext1_wakeup_prepare(void)
         if ((rtc_gpio_mask & BIT(rtc_pin)) == 0) {
             continue;
         }
+#if SOC_LP_IO_CLOCK_IS_INDEPENDENT
+        rtcio_ll_enable_io_clock(true);
+#endif
 #if SOC_RTCIO_INPUT_OUTPUT_SUPPORTED
         // Route pad to RTC
         rtcio_hal_function_select(rtc_pin, RTCIO_FUNC_RTC);
@@ -1787,6 +1795,9 @@ static void gpio_deep_sleep_wakeup_prepare(void)
         if (((1ULL << gpio_idx) & s_config.gpio_wakeup_mask) == 0) {
             continue;
         }
+#if SOC_LP_IO_CLOCK_IS_INDEPENDENT
+        rtcio_ll_enable_io_clock(true);
+#endif
 #if CONFIG_ESP_SLEEP_GPIO_ENABLE_INTERNAL_RESISTORS
         if (s_config.gpio_trigger_mode & BIT(gpio_idx)) {
             ESP_ERROR_CHECK(gpio_pullup_dis(gpio_idx));

components/hal/esp32s2/include/hal/rtc_io_ll.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -13,6 +13,9 @@
 #pragma once
 
 #include <stdlib.h>
+#include <stdbool.h>
+#include "soc/rtc_io_struct.h"
+#include "soc/rtc_io_reg.h"
 #include "soc/rtc_periph.h"
 #include "soc/sens_struct.h"
 #include "hal/gpio_types.h"
@@ -24,7 +27,7 @@ extern "C" {
 #endif
 
 typedef enum {
-    RTCIO_FUNC_RTC = 0x0,         /*!< The pin controled by RTC module. */
+    RTCIO_FUNC_RTC = 0x0,         /*!< The pin controlled by RTC module. */
     RTCIO_FUNC_DIGITAL = 0x1,     /*!< The pin controlled by DIGITAL module. */
 } rtcio_ll_func_t;
 
@@ -39,6 +42,16 @@ typedef enum {
     RTCIO_OUTPUT_OD = 0x1,      /*!< RTCIO output mode is open-drain. */
 } rtcio_ll_out_mode_t;
 
+/**
+ * @brief Enable/Disable LP IOMUX clock.
+ *
+ * @param enable true to enable the clock / false to disable the clock
+ */
+static inline void rtcio_ll_enable_io_clock(bool enable)
+{
+    SENS.sar_io_mux_conf.iomux_clk_gate_en = enable;
+}
+
 /**
  * @brief Select the rtcio function.
  *
@@ -49,14 +62,12 @@ typedef enum {
 static inline void rtcio_ll_function_select(int rtcio_num, rtcio_ll_func_t func)
 {
     if (func == RTCIO_FUNC_RTC) {
-        SENS.sar_io_mux_conf.iomux_clk_gate_en = 1;
         // 0: GPIO connected to digital GPIO module. 1: GPIO connected to analog RTC module.
         SET_PERI_REG_MASK(rtc_io_desc[rtcio_num].reg, (rtc_io_desc[rtcio_num].mux));
         //0:RTC FUNCTION 1,2,3:Reserved
         SET_PERI_REG_BITS(rtc_io_desc[rtcio_num].reg, RTC_IO_TOUCH_PAD1_FUN_SEL_V, RTCIO_LL_PIN_FUNC, rtc_io_desc[rtcio_num].func);
     } else if (func == RTCIO_FUNC_DIGITAL) {
         CLEAR_PERI_REG_MASK(rtc_io_desc[rtcio_num].reg, (rtc_io_desc[rtcio_num].mux));
-        SENS.sar_io_mux_conf.iomux_clk_gate_en = 0;
     }
 }
 
@@ -269,8 +280,7 @@ static inline void rtcio_ll_force_unhold_all(void)
  */
 static inline void rtcio_ll_wakeup_enable(int rtcio_num, rtcio_ll_wake_type_t type)
 {
-    SENS.sar_io_mux_conf.iomux_clk_gate_en = 1;
-    RTCIO.pin[rtcio_num].wakeup_enable = 0x1;
+    RTCIO.pin[rtcio_num].wakeup_enable = 1;
     RTCIO.pin[rtcio_num].int_type = type;
 }
 
@@ -281,7 +291,6 @@ static inline void rtcio_ll_wakeup_enable(int rtcio_num, rtcio_ll_wake_type_t ty
  */
 static inline void rtcio_ll_wakeup_disable(int rtcio_num)
 {
-    SENS.sar_io_mux_conf.iomux_clk_gate_en = 0;
     RTCIO.pin[rtcio_num].wakeup_enable = 0;
     RTCIO.pin[rtcio_num].int_type = RTCIO_WAKEUP_DISABLE;
 }

components/hal/esp32s3/include/hal/rtc_io_ll.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -13,6 +13,9 @@
 #pragma once
 
 #include <stdlib.h>
+#include <stdbool.h>
+#include "soc/rtc_io_struct.h"
+#include "soc/rtc_io_reg.h"
 #include "soc/rtc_periph.h"
 #include "hal/gpio_types.h"
 #include "soc/io_mux_reg.h"
@@ -41,6 +44,16 @@ typedef enum {
     RTCIO_OUTPUT_OD = 0x1,      /*!< RTCIO output mode is open-drain. */
 } rtcio_ll_out_mode_t;
 
+/**
+ * @brief Enable/Disable LP IOMUX clock.
+ *
+ * @param enable true to enable the clock / false to disable the clock
+ */
+static inline void rtcio_ll_enable_io_clock(bool enable)
+{
+    SENS.sar_peri_clk_gate_conf.iomux_clk_en = enable;
+}
+
 /**
  * @brief Select the rtcio function.
  *
@@ -55,14 +68,12 @@ static inline void rtcio_ll_function_select(int rtcio_num, rtcio_ll_func_t func)
         if (rtcio_num == rtc_io_num_map[USB_DM_GPIO_NUM] || rtcio_num == rtc_io_num_map[USB_DP_GPIO_NUM]) {
             USB_SERIAL_JTAG.conf0.usb_pad_enable = 0;
         }
-        SENS.sar_peri_clk_gate_conf.iomux_clk_en = 1;
         // 0: GPIO connected to digital GPIO module. 1: GPIO connected to analog RTC module.
         SET_PERI_REG_MASK(rtc_io_desc[rtcio_num].reg, (rtc_io_desc[rtcio_num].mux));
         //0:RTC FUNCTION 1,2,3:Reserved
         SET_PERI_REG_BITS(rtc_io_desc[rtcio_num].reg, RTC_IO_TOUCH_PAD1_FUN_SEL_V, RTCIO_LL_PIN_FUNC, rtc_io_desc[rtcio_num].func);
     } else if (func == RTCIO_FUNC_DIGITAL) {
         CLEAR_PERI_REG_MASK(rtc_io_desc[rtcio_num].reg, (rtc_io_desc[rtcio_num].mux));
-        SENS.sar_peri_clk_gate_conf.iomux_clk_en = 0;
         // USB Serial JTAG pad re-enable won't be done here (it requires both DM and DP pins not in rtc function)
         // Instead, USB_SERIAL_JTAG_USB_PAD_ENABLE needs to be guaranteed to be set in usb_serial_jtag driver
     }
@@ -295,8 +306,7 @@ static inline void rtcio_ll_force_unhold_all(void)
  */
 static inline void rtcio_ll_wakeup_enable(int rtcio_num, rtcio_ll_wake_type_t type)
 {
-    SENS.sar_peri_clk_gate_conf.iomux_clk_en = 1;
-    RTCIO.pin[rtcio_num].wakeup_enable = 0x1;
+    RTCIO.pin[rtcio_num].wakeup_enable = 1;
     RTCIO.pin[rtcio_num].int_type = type;
 }
 

components/soc/esp32s2/include/soc/Kconfig.soc_caps.in

@@ -587,6 +587,10 @@ config SOC_RTCIO_WAKE_SUPPORTED
     bool
     default y
 
+config SOC_LP_IO_CLOCK_IS_INDEPENDENT
+    bool
+    default y
+
 config SOC_SDM_GROUPS
     int
     default 1

components/soc/esp32s2/include/soc/soc_caps.h

@@ -256,6 +256,8 @@
                                              */
 #define SOC_RTCIO_HOLD_SUPPORTED 1
 #define SOC_RTCIO_WAKE_SUPPORTED 1
+// LP IO peripherals have independent clock gating to manage
+#define SOC_LP_IO_CLOCK_IS_INDEPENDENT 1
 
 /*-------------------------- Sigma Delta Modulator CAPS -----------------*/
 #define SOC_SDM_GROUPS             1U

components/soc/esp32s3/include/soc/Kconfig.soc_caps.in

@@ -699,6 +699,10 @@ config SOC_RTCIO_WAKE_SUPPORTED
     bool
     default y
 
+config SOC_LP_IO_CLOCK_IS_INDEPENDENT
+    bool
+    default y
+
 config SOC_SDM_GROUPS
     bool
     default y

components/soc/esp32s3/include/soc/soc_caps.h

@@ -285,6 +285,8 @@
                                              */
 #define SOC_RTCIO_HOLD_SUPPORTED 1
 #define SOC_RTCIO_WAKE_SUPPORTED 1
+// LP IO peripherals have independent clock gating to manage
+#define SOC_LP_IO_CLOCK_IS_INDEPENDENT 1
 
 /*-------------------------- Sigma Delta Modulator CAPS -----------------*/
 #define SOC_SDM_GROUPS             1

components/ulp/ulp_riscv/ulp_core/include/ulp_riscv_gpio.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2010-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2010-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -11,10 +11,12 @@ extern "C" {
 #endif
 
 #include "sdkconfig.h"
+#include "soc/soc_caps.h"
 #include "soc/rtc_io_reg.h"
 #include "soc/sens_reg.h"
 #include "hal/gpio_types.h"
 #include "ulp_riscv_register_ops.h"
+#include "hal/rtc_io_ll.h"
 
 typedef enum {
     ULP_RISCV_GPIO_INTR_DISABLE = 0,    /*!< Disable RTC GPIO interrupt                             */
@@ -33,10 +35,8 @@ typedef enum {
 
 static inline void ulp_riscv_gpio_init(gpio_num_t gpio_num)
 {
-#if CONFIG_IDF_TARGET_ESP32S2
-    SET_PERI_REG_MASK(SENS_SAR_IO_MUX_CONF_REG, SENS_IOMUX_CLK_GATE_EN_M);
-#elif CONFIG_IDF_TARGET_ESP32S3
-    SET_PERI_REG_MASK(SENS_SAR_PERI_CLK_GATE_CONF_REG, SENS_IOMUX_CLK_EN_M);
+#if SOC_LP_IO_CLOCK_IS_INDEPENDENT
+    rtcio_ll_enable_io_clock(true);
 #endif
     SET_PERI_REG_MASK(RTC_IO_TOUCH_PAD0_REG + gpio_num*4, RTC_IO_TOUCH_PAD0_MUX_SEL);
     REG_SET_FIELD(RTC_IO_TOUCH_PAD0_REG + gpio_num*4, RTC_IO_TOUCH_PAD0_FUN_SEL, 0);