fix(esp_hw_support): fix current leakage if ext32k slow clock source not exists

components/esp_hw_support/port/esp32/rtc_clk.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
  */
@@ -114,6 +114,11 @@ void rtc_clk_32k_enable_external(void)
     rtc_clk_32k_enable_common(CLK_LL_XTAL32K_ENABLE_MODE_EXTERNAL);
 }
 
+void rtc_clk_32k_disable_external(void)
+{
+    clk_ll_xtal32k_disable();
+}
+
 /* Helping external 32kHz crystal to start up.
  * External crystal connected to outputs GPIO32 GPIO33.
  * Forms N pulses with a frequency of about 32KHz on the outputs of the crystal.

components/esp_hw_support/port/esp32c2/rtc_clk.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2020-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2020-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -36,6 +36,12 @@ void rtc_clk_32k_enable_external(void)
     REG_SET_BIT(RTC_CNTL_PAD_HOLD_REG, BIT(EXT_OSC_SLOW_GPIO_NUM));
 }
 
+void rtc_clk_32k_disable_external(void)
+{
+    PIN_INPUT_DISABLE(IO_MUX_GPIO0_REG);
+    REG_CLR_BIT(RTC_CNTL_PAD_HOLD_REG, BIT(EXT_OSC_SLOW_GPIO_NUM));
+}
+
 void rtc_clk_8m_enable(bool clk_8m_en, bool d256_en)
 {
     if (clk_8m_en) {

components/esp_hw_support/port/esp32c3/rtc_clk.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2020-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2020-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -55,6 +55,13 @@ void rtc_clk_32k_enable_external(void)
     clk_ll_xtal32k_enable(CLK_LL_XTAL32K_ENABLE_MODE_EXTERNAL);
 }
 
+void rtc_clk_32k_disable_external(void)
+{
+    PIN_INPUT_DISABLE(IO_MUX_GPIO0_REG);
+    CLEAR_PERI_REG_MASK(RTC_CNTL_PAD_HOLD_REG, RTC_CNTL_GPIO_PIN0_HOLD);
+    clk_ll_xtal32k_disable();
+}
+
 void rtc_clk_32k_bootstrap(uint32_t cycle)
 {
     /* No special bootstrapping needed for ESP32-C3, 'cycle' argument is to keep the signature

components/esp_hw_support/port/esp32c6/rtc_clk.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
  */
@@ -61,6 +61,13 @@ void rtc_clk_32k_enable_external(void)
     clk_ll_xtal32k_enable(CLK_LL_XTAL32K_ENABLE_MODE_EXTERNAL);
 }
 
+void rtc_clk_32k_disable_external(void)
+{
+    PIN_INPUT_DISABLE(IO_MUX_GPIO0_REG);
+    REG_CLR_BIT(LP_AON_GPIO_HOLD0_REG, BIT(EXT_OSC_SLOW_GPIO_NUM));
+    clk_ll_xtal32k_disable();
+}
+
 void rtc_clk_32k_bootstrap(uint32_t cycle)
 {
     /* No special bootstrapping needed for ESP32-C6, 'cycle' argument is to keep the signature

components/esp_hw_support/port/esp32h2/rtc_clk.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
  */
@@ -62,6 +62,13 @@ void rtc_clk_32k_enable_external(void)
     clk_ll_xtal32k_enable(CLK_LL_XTAL32K_ENABLE_MODE_EXTERNAL);
 }
 
+void rtc_clk_32k_disable_external(void)
+{
+    PIN_INPUT_DISABLE(IO_MUX_GPIO13_REG);
+    REG_CLR_BIT(LP_AON_GPIO_HOLD0_REG, BIT(EXT_OSC_SLOW_GPIO_NUM));
+    clk_ll_xtal32k_disable();
+}
+
 void rtc_clk_32k_bootstrap(uint32_t cycle)
 {
     /* No special bootstrapping needed for ESP32-H2, 'cycle' argument is to keep the signature

components/esp_hw_support/port/esp32s2/rtc_clk.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
  */
@@ -48,6 +48,13 @@ void rtc_clk_32k_enable_external(void)
     clk_ll_xtal32k_enable(CLK_LL_XTAL32K_ENABLE_MODE_EXTERNAL);
 }
 
+void rtc_clk_32k_disable_external(void)
+{
+    CLEAR_PERI_REG_MASK(RTC_IO_XTAL_32P_PAD_REG, RTC_IO_X32P_MUX_SEL);
+    CLEAR_PERI_REG_MASK(RTC_IO_XTAL_32N_PAD_REG, RTC_IO_X32N_MUX_SEL);
+    clk_ll_xtal32k_disable();
+}
+
 void rtc_clk_32k_bootstrap(uint32_t cycle)
 {
     /* No special bootstrapping needed for ESP32-S2, 'cycle' argument is to keep the signature

components/esp_hw_support/port/esp32s3/rtc_clk.c

@@ -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
  */
@@ -71,6 +71,13 @@ void rtc_clk_32k_enable_external(void)
     clk_ll_xtal32k_enable(CLK_LL_XTAL32K_ENABLE_MODE_EXTERNAL);
 }
 
+void rtc_clk_32k_disable_external(void)
+{
+    PIN_INPUT_DISABLE(IO_MUX_GPIO15_REG);
+    CLEAR_PERI_REG_MASK(RTC_CNTL_PAD_HOLD_REG, RTC_CNTL_X32P_HOLD);
+    clk_ll_xtal32k_disable();
+}
+
 void rtc_clk_32k_bootstrap(uint32_t cycle)
 {
     /* No special bootstrapping needed for ESP32-S3, 'cycle' argument is to keep the signature

components/esp_system/port/soc/esp32/clk.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
  */
@@ -91,7 +91,13 @@ static void select_rtc_slow_clk(slow_clk_sel_t slow_clk)
             rtc_clk_8m_enable(true, true);
         }
         rtc_clk_slow_src_set(rtc_slow_clk_src);
-
+        if (rtc_slow_clk_src != SOC_RTC_SLOW_CLK_SRC_XTAL32K) {
+            if (slow_clk == SLOW_CLK_32K_XTAL) {
+                rtc_clk_32k_enable(false);
+            } else if (slow_clk == SLOW_CLK_32K_EXT_OSC) {
+                rtc_clk_32k_disable_external();
+            }
+        }
         if (SLOW_CLK_CAL_CYCLES > 0) {
             /* TODO: 32k XTAL oscillator has some frequency drift at startup.
              * Improve calibration routine to wait until the frequency is stable.

components/esp_system/port/soc/esp32c2/clk.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
  */
@@ -179,7 +179,9 @@ static void select_rtc_slow_clk(slow_clk_sel_t slow_clk)
             rtc_clk_8m_enable(true, true);
         }
         rtc_clk_slow_src_set(rtc_slow_clk_src);
-
+        if (rtc_slow_clk_src != SOC_RTC_SLOW_CLK_SRC_OSC_SLOW) {
+            rtc_clk_32k_disable_external();
+        }
         if (SLOW_CLK_CAL_CYCLES > 0) {
             /* TODO: 32k XTAL oscillator has some frequency drift at startup.
              * Improve calibration routine to wait until the frequency is stable.

components/esp_system/port/soc/esp32c3/clk.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
  */
@@ -174,7 +174,13 @@ static void select_rtc_slow_clk(slow_clk_sel_t slow_clk)
             rtc_clk_8m_enable(true, true);
         }
         rtc_clk_slow_src_set(rtc_slow_clk_src);
-
+        if (rtc_slow_clk_src != SOC_RTC_SLOW_CLK_SRC_XTAL32K) {
+            if (slow_clk == SLOW_CLK_32K_XTAL) {
+                rtc_clk_32k_enable(false);
+            } else if (slow_clk == SLOW_CLK_32K_EXT_OSC) {
+                rtc_clk_32k_disable_external();
+            }
+        }
         if (SLOW_CLK_CAL_CYCLES > 0) {
             /* TODO: 32k XTAL oscillator has some frequency drift at startup.
              * Improve calibration routine to wait until the frequency is stable.

components/esp_system/port/soc/esp32c6/clk.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
  */
@@ -163,12 +163,14 @@ static void select_rtc_slow_clk(soc_rtc_slow_clk_src_t rtc_slow_clk_src)
             rtc_clk_rc32k_enable(true);
         }
         rtc_clk_slow_src_set(rtc_slow_clk_src);
-
         // Disable unused clock sources after clock source switching is complete.
         // Regardless of the clock source selection, the internal 136K clock source will always keep on.
-        if (rtc_slow_clk_src != SOC_RTC_SLOW_CLK_SRC_XTAL32K && rtc_slow_clk_src != SOC_RTC_SLOW_CLK_SRC_OSC_SLOW) {
+        if (rtc_slow_clk_src != SOC_RTC_SLOW_CLK_SRC_XTAL32K) {
             rtc_clk_32k_enable(false);
         }
+        if (rtc_slow_clk_src != SOC_RTC_SLOW_CLK_SRC_OSC_SLOW) {
+            rtc_clk_32k_disable_external();
+        }
         if (rtc_slow_clk_src != SOC_RTC_SLOW_CLK_SRC_RC32K) {
             rtc_clk_rc32k_enable(false);
         }

components/esp_system/port/soc/esp32h2/clk.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
  */
@@ -164,12 +164,14 @@ static void select_rtc_slow_clk(soc_rtc_slow_clk_src_t rtc_slow_clk_src)
             rtc_clk_rc32k_enable(true);
         }
         rtc_clk_slow_src_set(rtc_slow_clk_src);
-
         // Disable unused clock sources after clock source switching is complete.
         // Regardless of the clock source selection, the internal 136K clock source will always keep on.
-        if (rtc_slow_clk_src != SOC_RTC_SLOW_CLK_SRC_XTAL32K && rtc_slow_clk_src != SOC_RTC_SLOW_CLK_SRC_OSC_SLOW) {
+        if (rtc_slow_clk_src != SOC_RTC_SLOW_CLK_SRC_XTAL32K) {
             rtc_clk_32k_enable(false);
         }
+        if (rtc_slow_clk_src != SOC_RTC_SLOW_CLK_SRC_OSC_SLOW) {
+            rtc_clk_32k_disable_external();
+        }
         if (rtc_slow_clk_src != SOC_RTC_SLOW_CLK_SRC_RC32K) {
             rtc_clk_rc32k_enable(false);
         }

components/esp_system/port/soc/esp32s2/clk.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
  */
@@ -180,7 +180,13 @@ static void select_rtc_slow_clk(slow_clk_sel_t slow_clk)
             rtc_clk_8m_enable(true, true);
         }
         rtc_clk_slow_src_set(rtc_slow_clk_src);
-
+        if (rtc_slow_clk_src != SOC_RTC_SLOW_CLK_SRC_XTAL32K) {
+            if (slow_clk == SLOW_CLK_32K_XTAL) {
+                rtc_clk_32k_enable(false);
+            } else if (slow_clk == SLOW_CLK_32K_EXT_OSC) {
+                rtc_clk_32k_disable_external();
+            }
+        }
         if (SLOW_CLK_CAL_CYCLES > 0) {
             /* TODO: 32k XTAL oscillator has some frequency drift at startup.
              * Improve calibration routine to wait until the frequency is stable.

components/esp_system/port/soc/esp32s3/clk.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
  */
@@ -176,7 +176,13 @@ static void select_rtc_slow_clk(slow_clk_sel_t slow_clk)
             rtc_clk_8m_enable(true, true);
         }
         rtc_clk_slow_src_set(rtc_slow_clk_src);
-
+        if (rtc_slow_clk_src != SOC_RTC_SLOW_CLK_SRC_XTAL32K) {
+            if (slow_clk == SLOW_CLK_32K_XTAL) {
+                rtc_clk_32k_enable(false);
+            } else if (slow_clk == SLOW_CLK_32K_EXT_OSC) {
+                rtc_clk_32k_disable_external();
+            }
+        }
         if (SLOW_CLK_CAL_CYCLES > 0) {
             /* TODO: 32k XTAL oscillator has some frequency drift at startup.
              * Improve calibration routine to wait until the frequency is stable.

components/soc/esp32/include/soc/rtc.h

@@ -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
  */
@@ -179,6 +179,11 @@ void rtc_clk_32k_enable(bool en);
  */
 void rtc_clk_32k_enable_external(void);
 
+/**
+ * @brief Disable 32 kHz XTAL oscillator input.
+ */
+void rtc_clk_32k_disable_external(void);
+
 /**
  * @brief Get the state of 32k XTAL oscillator
  * @return true if 32k XTAL oscillator has been enabled

components/soc/esp32c2/include/soc/rtc.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2020-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2020-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -263,6 +263,11 @@ void rtc_clk_xtal_freq_update(rtc_xtal_freq_t xtal_freq);
  */
 void rtc_clk_32k_enable_external(void);
 
+/**
+ * @brief Disable 32KHz external oscillator
+ */
+void rtc_clk_32k_disable_external(void);
+
 /**
  * @brief Enable or disable 8 MHz internal oscillator
  *

components/soc/esp32c3/include/soc/rtc.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2020-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -268,6 +268,11 @@ void rtc_clk_32k_enable(bool en);
  */
 void rtc_clk_32k_enable_external(void);
 
+/**
+ * @brief Disable 32 kHz XTAL oscillator input.
+ */
+void rtc_clk_32k_disable_external(void);
+
 /**
  * @brief Get the state of 32k XTAL oscillator
  * @return true if 32k XTAL oscillator has been enabled

components/soc/esp32c6/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
  */
@@ -235,6 +235,11 @@ void rtc_clk_32k_enable(bool en);
  */
 void rtc_clk_32k_enable_external(void);
 
+/**
+ * @brief Disable 32 kHz XTAL oscillator input.
+ */
+void rtc_clk_32k_disable_external(void);
+
 /**
  * @brief Get the state of 32k XTAL oscillator
  * @return true if 32k XTAL oscillator has been enabled

components/soc/esp32h2/include/soc/rtc.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2020-2024 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2020-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -237,6 +237,11 @@ void rtc_clk_32k_enable(bool en);
  */
 void rtc_clk_32k_enable_external(void);
 
+/**
+ * @brief Disable 32 kHz XTAL oscillator input.
+ */
+void rtc_clk_32k_disable_external(void);
+
 /**
  * @brief Get the state of 32k XTAL oscillator
  * @return true if 32k XTAL oscillator has been enabled

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

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2024-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -234,6 +234,11 @@ void rtc_clk_32k_enable(bool en);
  */
 void rtc_clk_32k_enable_external(void);
 
+/**
+ * @brief Disable 32 kHz XTAL oscillator input.
+ */
+void rtc_clk_32k_disable_external(void);
+
 /**
  * @brief Get the state of 32k XTAL oscillator
  * @return true if 32k XTAL oscillator has been enabled

components/soc/esp32s2/include/soc/rtc.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -263,6 +263,11 @@ void rtc_clk_32k_enable(bool en);
  */
 void rtc_clk_32k_enable_external(void);
 
+/**
+ * @brief Disable 32 kHz XTAL oscillator input.
+ */
+void rtc_clk_32k_disable_external(void);
+
 /**
  * @brief Get the state of 32k XTAL oscillator
  * @return true if 32k XTAL oscillator has been enabled

components/soc/esp32s3/include/soc/rtc.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -283,7 +283,12 @@ void rtc_clk_32k_enable(bool en);
 void rtc_clk_32k_enable_external(void);
 
 /**
- * @brief Get the state of 32k XTAL oscillator
+ * @brief Disable 32 kHz XTAL oscillator input.
+ */
+void rtc_clk_32k_disable_external(void);
+
+/**
+ * @brief Get the state of 32k XTAL oscillators
  * @return true if 32k XTAL oscillator has been enabled
  */
 bool rtc_clk_32k_enabled(void);