refactor(system): guard WDT with SoC capability macros

Wrap MWDT-related code under SOC_WDT_SUPPORTED so targets without a main
watchdog can compile.

Add SOC_RTC_WDT_SUPPORTED for RTC watchdog usage (bootloader, slow-clock
paths) and regenerate Kconfig.soc_caps.in. Bootloader RWDT setup stays
under SOC_RTC_WDT_SUPPORTED; MWDT flashboot teardown stays under
SOC_WDT_SUPPORTED.

ESP_INT_WDT, ESP_TASK_WDT_EN, and BOOTLOADER_WDT_ENABLE depend on
SOC_WDT_SUPPORTED where applicable. Build xt_wdt.c only when
SOC_XT_WDT_SUPPORTED. Provide no-op panic WDT helpers when
SOC_WDT_SUPPORTED is disabled.

components/bootloader/Kconfig.projbuild

@@ -284,6 +284,7 @@ menu "Bootloader config"
 
     config BOOTLOADER_WDT_ENABLE
         bool "Use RTC watchdog in start code"
+        depends on SOC_RTC_WDT_SUPPORTED
         default y
         help
             Tracks the execution time of startup code.

components/bootloader_support/src/bootloader_init.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -16,8 +16,11 @@
 #include "bootloader_common.h"
 #include "esp_cpu.h"
 #include "soc/soc_caps.h"
+
 #include "soc/rtc.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "hal/efuse_hal.h"
 #include "hal/cache_hal.h"
 #include "hal/mmu_hal.h"
@@ -72,6 +75,7 @@ esp_err_t bootloader_check_bootloader_validity(void)
 
 void bootloader_config_wdt(void)
 {
+#if SOC_RTC_WDT_SUPPORTED
     /*
      * At this point, the flashboot protection of RWDT and MWDT0 will have been
      * automatically enabled. We can disable flashboot protection as it's not
@@ -95,11 +99,16 @@ void bootloader_config_wdt(void)
     wdt_hal_write_protect_enable(&rwdt_ctx);
 #endif
 
-    //Disable MWDT0 flashboot protection. But only after we've enabled the RWDT first so that there's not gap in WDT protection.
+#endif /* SOC_RTC_WDT_SUPPORTED */
+
+#if SOC_WDT_SUPPORTED
+    //Disable MWDT0 flashboot protection. When RTC WDT is present, run this after RWDT
+    //setup above so there is no gap in WDT protection during bootloader.
     wdt_hal_context_t mwdt_ctx = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
     wdt_hal_write_protect_disable(&mwdt_ctx);
     wdt_hal_set_flashboot_en(&mwdt_ctx, false);
     wdt_hal_write_protect_enable(&mwdt_ctx);
+#endif /* SOC_WDT_SUPPORTED */
 }
 
 void bootloader_enable_random(void)

components/bootloader_support/src/esp32/bootloader_esp32.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2019-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2019-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -24,6 +24,8 @@
 #include "soc/gpio_sig_map.h"
 #include "soc/io_mux_reg.h"
 #include "soc/rtc.h"
+#include "soc/soc_caps.h"
+
 #include "hal/gpio_hal.h"
 #include "hal/mmu_hal.h"
 #include "xtensa/config/core.h"
@@ -88,6 +90,7 @@ static inline esp_err_t bootloader_check_rated_cpu_clock(void)
     return ESP_OK;
 }
 
+#if SOC_RTC_WDT_SUPPORTED
 static void wdt_reset_cpu0_info_enable(void)
 {
     //We do not reset core1 info here because it didn't work before cpu1 was up. So we put it into call_start_cpu1.
@@ -168,6 +171,7 @@ static void bootloader_check_wdt_reset(void)
     }
     wdt_reset_cpu0_info_enable();
 }
+#endif // SOC_RTC_WDT_SUPPORTED
 
 esp_err_t bootloader_init(void)
 {
@@ -240,10 +244,14 @@ esp_err_t bootloader_init(void)
     }
 #endif // #if !CONFIG_APP_BUILD_TYPE_RAM
 
+#if SOC_RTC_WDT_SUPPORTED
     // check whether a WDT reset happened
     bootloader_check_wdt_reset();
+#endif
+#if SOC_RTC_WDT_SUPPORTED || SOC_WDT_SUPPORTED
     // config WDT
     bootloader_config_wdt();
+#endif
     // enable RNG early entropy source
     bootloader_enable_random();
     return ret;

components/bootloader_support/src/esp32c2/bootloader_esp32c2.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2020-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2020-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -18,6 +18,8 @@
 #include "soc/assist_debug_reg.h"
 #include "esp_cpu.h"
 #include "soc/rtc.h"
+#include "soc/soc_caps.h"
+
 #include "soc/extmem_reg.h"
 #include "soc/system_reg.h"
 #include "esp32c2/rom/ets_sys.h"
@@ -39,6 +41,7 @@
 
 ESP_LOG_ATTR_TAG(TAG, "boot.esp32c2");
 
+#if SOC_RTC_WDT_SUPPORTED
 static void wdt_reset_cpu0_info_enable(void)
 {
     REG_SET_BIT(SYSTEM_CPU_PERI_CLK_EN_REG, SYSTEM_CLK_EN_ASSIST_DEBUG);
@@ -75,6 +78,7 @@ static void bootloader_super_wdt_auto_feed(void)
     REG_SET_BIT(RTC_CNTL_SWD_CONF_REG, RTC_CNTL_SWD_AUTO_FEED_EN);
     REG_WRITE(RTC_CNTL_SWD_WPROTECT_REG, 0);
 }
+#endif // SOC_RTC_WDT_SUPPORTED
 
 static inline void bootloader_ana_reset_config(void)
 {
@@ -89,7 +93,9 @@ esp_err_t bootloader_init(void)
     esp_err_t ret = ESP_OK;
 
     bootloader_ana_reset_config();
+#if SOC_RTC_WDT_SUPPORTED
     bootloader_super_wdt_auto_feed();
+#endif
 
 // In RAM_APP, memory will be initialized in `call_start_cpu0`
 #if !CONFIG_APP_BUILD_TYPE_RAM
@@ -135,10 +141,14 @@ esp_err_t bootloader_init(void)
     }
 #endif // !CONFIG_APP_BUILD_TYPE_RAM
 
+#if SOC_RTC_WDT_SUPPORTED
     // check whether a WDT reset happened
     bootloader_check_wdt_reset();
+#endif
+#if SOC_RTC_WDT_SUPPORTED || SOC_WDT_SUPPORTED
     // config WDT
     bootloader_config_wdt();
+#endif
     // enable RNG early entropy source
     bootloader_enable_random();
     return ret;

components/bootloader_support/src/esp32c3/bootloader_esp32c3.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2020-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2020-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -19,6 +19,8 @@
 #include "esp_cpu.h"
 #include "soc/rtc.h"
 #include "soc/rtc_cntl_reg.h"
+#include "soc/soc_caps.h"
+
 #include "soc/extmem_reg.h"
 #include "soc/system_reg.h"
 #include "soc/chip_revision.h"
@@ -44,6 +46,7 @@
 
 ESP_LOG_ATTR_TAG(TAG, "boot.esp32c3");
 
+#if SOC_RTC_WDT_SUPPORTED
 static void wdt_reset_cpu0_info_enable(void)
 {
     REG_SET_BIT(SYSTEM_CPU_PERI_CLK_EN_REG, SYSTEM_CLK_EN_ASSIST_DEBUG);
@@ -80,6 +83,7 @@ static void bootloader_super_wdt_auto_feed(void)
     REG_SET_BIT(RTC_CNTL_SWD_CONF_REG, RTC_CNTL_SWD_AUTO_FEED_EN);
     REG_WRITE(RTC_CNTL_SWD_WPROTECT_REG, 0);
 }
+#endif // SOC_RTC_WDT_SUPPORTED
 
 static inline void bootloader_hardware_init(void)
 {
@@ -128,7 +132,9 @@ esp_err_t bootloader_init(void)
 
     bootloader_hardware_init();
     bootloader_ana_reset_config();
+#if SOC_RTC_WDT_SUPPORTED
     bootloader_super_wdt_auto_feed();
+#endif
 
 // In RAM_APP, memory will be initialized in `call_start_cpu0`
 #if !CONFIG_APP_BUILD_TYPE_RAM
@@ -179,10 +185,14 @@ esp_err_t bootloader_init(void)
     }
 #endif  //#if !CONFIG_APP_BUILD_TYPE_RAM
 
+#if SOC_RTC_WDT_SUPPORTED
     // check whether a WDT reset happened
     bootloader_check_wdt_reset();
+#endif
+#if SOC_RTC_WDT_SUPPORTED || SOC_WDT_SUPPORTED
     // config WDT
     bootloader_config_wdt();
+#endif
     // enable RNG early entropy source
     bootloader_enable_random();
 

components/bootloader_support/src/esp32c5/bootloader_esp32c5.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2024-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2024-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -14,6 +14,7 @@
 #include "esp_rom_sys.h"
 #include "esp_rom_spiflash.h"
 #include "soc/soc_caps.h"
+
 #include "soc/gpio_sig_map.h"
 #include "soc/io_mux_reg.h"
 #include "soc/assist_debug_reg.h"
@@ -45,6 +46,7 @@
 
 ESP_LOG_ATTR_TAG(TAG, "boot.esp32c5");
 
+#if SOC_RTC_WDT_SUPPORTED
 static void wdt_reset_cpu0_info_enable(void)
 {
     REG_SET_BIT(PCR_ASSIST_CONF_REG, PCR_ASSIST_CLK_EN);
@@ -81,6 +83,7 @@ static void bootloader_super_wdt_auto_feed(void)
     REG_SET_BIT(LP_WDT_SWD_CONFIG_REG, LP_WDT_SWD_AUTO_FEED_EN);
     REG_WRITE(LP_WDT_SWD_WPROTECT_REG, 0);
 }
+#endif // SOC_RTC_WDT_SUPPORTED
 
 static inline void bootloader_hardware_init(void)
 {
@@ -113,7 +116,9 @@ esp_err_t bootloader_init(void)
 
     bootloader_hardware_init();
     bootloader_ana_reset_config();
+#if SOC_RTC_WDT_SUPPORTED
     bootloader_super_wdt_auto_feed();
+#endif
 
 // In RAM_APP, memory will be initialized in `call_start_cpu0`
 #if !CONFIG_APP_BUILD_TYPE_RAM
@@ -164,10 +169,14 @@ esp_err_t bootloader_init(void)
     }
 #endif // !CONFIG_APP_BUILD_TYPE_RAM
 
+#if SOC_RTC_WDT_SUPPORTED
     // check whether a WDT reset happened
     bootloader_check_wdt_reset();
+#endif
+#if SOC_RTC_WDT_SUPPORTED || SOC_WDT_SUPPORTED
     // config WDT
     bootloader_config_wdt();
+#endif
     // enable RNG early entropy source
     bootloader_enable_random();
 

components/bootloader_support/src/esp32c6/bootloader_esp32c6.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -18,6 +18,8 @@
 #include "soc/assist_debug_reg.h"
 #include "esp_cpu.h"
 #include "soc/rtc.h"
+#include "soc/soc_caps.h"
+
 #include "soc/extmem_reg.h"
 #include "soc/pcr_reg.h"
 #include "esp32c6/rom/ets_sys.h"
@@ -46,6 +48,7 @@
 
 ESP_LOG_ATTR_TAG(TAG, "boot.esp32c6");
 
+#if SOC_RTC_WDT_SUPPORTED
 static void wdt_reset_cpu0_info_enable(void)
 {
     REG_SET_BIT(PCR_ASSIST_CONF_REG, PCR_ASSIST_CLK_EN);
@@ -82,6 +85,7 @@ static void bootloader_super_wdt_auto_feed(void)
     REG_SET_BIT(LP_WDT_SWD_CONFIG_REG, LP_WDT_SWD_AUTO_FEED_EN);
     REG_WRITE(LP_WDT_SWD_WPROTECT_REG, 0);
 }
+#endif // SOC_RTC_WDT_SUPPORTED
 
 static inline void bootloader_hardware_init(void)
 {
@@ -112,7 +116,9 @@ esp_err_t bootloader_init(void)
 
     bootloader_hardware_init();
     bootloader_ana_reset_config();
+#if SOC_RTC_WDT_SUPPORTED
     bootloader_super_wdt_auto_feed();
+#endif
 
 // In RAM_APP, memory will be initialized in `call_start_cpu0`
 #if !CONFIG_APP_BUILD_TYPE_RAM
@@ -163,10 +169,14 @@ esp_err_t bootloader_init(void)
     }
 #endif // !CONFIG_APP_BUILD_TYPE_RAM
 
+#if SOC_RTC_WDT_SUPPORTED
     // check whether a WDT reset happened
     bootloader_check_wdt_reset();
+#endif
+#if SOC_RTC_WDT_SUPPORTED || SOC_WDT_SUPPORTED
     // config WDT
     bootloader_config_wdt();
+#endif
     // enable RNG early entropy source
     bootloader_enable_random();
 

components/bootloader_support/src/esp32c61/bootloader_esp32c61.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2024-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2024-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -18,6 +18,8 @@
 #include "soc/assist_debug_reg.h"
 #include "esp_cpu.h"
 #include "soc/rtc.h"
+#include "soc/soc_caps.h"
+
 #include "soc/cache_reg.h"
 #include "soc/pcr_reg.h"
 #include "esp32c61/rom/ets_sys.h"
@@ -46,6 +48,7 @@
 
 ESP_LOG_ATTR_TAG(TAG, "boot.esp32c61");
 
+#if SOC_RTC_WDT_SUPPORTED
 static void wdt_reset_cpu0_info_enable(void)
 {
     REG_SET_BIT(PCR_ASSIST_CONF_REG, PCR_ASSIST_CLK_EN);
@@ -82,6 +85,7 @@ static void bootloader_super_wdt_auto_feed(void)
     REG_SET_BIT(LP_WDT_SWD_CONFIG_REG, LP_WDT_SWD_AUTO_FEED_EN);
     REG_WRITE(LP_WDT_SWD_WPROTECT_REG, 0);
 }
+#endif // SOC_RTC_WDT_SUPPORTED
 
 static inline void bootloader_hardware_init(void)
 {
@@ -104,7 +108,9 @@ esp_err_t bootloader_init(void)
     esp_err_t ret = ESP_OK;
     bootloader_hardware_init();
     bootloader_ana_reset_config();
+#if SOC_RTC_WDT_SUPPORTED
     bootloader_super_wdt_auto_feed();
+#endif
 
 // In RAM_APP, memory will be initialized in `call_start_cpu0`
 #if !CONFIG_APP_BUILD_TYPE_RAM
@@ -155,10 +161,14 @@ esp_err_t bootloader_init(void)
     }
 #endif // !CONFIG_APP_BUILD_TYPE_RAM
 
+#if SOC_RTC_WDT_SUPPORTED
     // check whether a WDT reset happened
     bootloader_check_wdt_reset();
+#endif
+#if SOC_RTC_WDT_SUPPORTED || SOC_WDT_SUPPORTED
     // config WDT
     bootloader_config_wdt();
+#endif
     // enable RNG early entropy source
     bootloader_enable_random();
 

components/bootloader_support/src/esp32h2/bootloader_esp32h2.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -18,6 +18,8 @@
 #include "soc/assist_debug_reg.h"
 #include "esp_cpu.h"
 #include "soc/rtc.h"
+#include "soc/soc_caps.h"
+
 #include "soc/extmem_reg.h"
 #include "soc/pcr_reg.h"
 #include "esp32h2/rom/ets_sys.h"
@@ -45,6 +47,7 @@
 
 ESP_LOG_ATTR_TAG(TAG, "boot.esp32h2");
 
+#if SOC_RTC_WDT_SUPPORTED
 static void wdt_reset_cpu0_info_enable(void)
 {
     REG_SET_BIT(PCR_ASSIST_CONF_REG, PCR_ASSIST_CLK_EN);
@@ -81,6 +84,7 @@ static void bootloader_super_wdt_auto_feed(void)
     REG_SET_BIT(LP_WDT_SWD_CONFIG_REG, LP_WDT_SWD_AUTO_FEED_EN);
     REG_WRITE(LP_WDT_SWD_WPROTECT_REG, 0);
 }
+#endif // SOC_RTC_WDT_SUPPORTED
 
 static inline void bootloader_hardware_init(void)
 {
@@ -109,7 +113,9 @@ esp_err_t bootloader_init(void)
 
     bootloader_hardware_init();
     bootloader_ana_reset_config();
+#if SOC_RTC_WDT_SUPPORTED
     bootloader_super_wdt_auto_feed();
+#endif
 
 // In RAM_APP, memory will be initialized in `call_start_cpu0`
 #if !CONFIG_APP_BUILD_TYPE_RAM
@@ -161,9 +167,13 @@ esp_err_t bootloader_init(void)
 #endif // !CONFIG_APP_BUILD_TYPE_RAM
 
     // check whether a WDT reset happened
+#if SOC_RTC_WDT_SUPPORTED
     bootloader_check_wdt_reset();
+#endif
+#if SOC_RTC_WDT_SUPPORTED || SOC_WDT_SUPPORTED
     // config WDT
     bootloader_config_wdt();
+#endif
     // enable RNG early entropy source
     bootloader_enable_random();
 

components/bootloader_support/src/esp32h21/bootloader_esp32h21.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2024-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2024-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -18,6 +18,8 @@
 #include "soc/assist_debug_reg.h"
 #include "esp_cpu.h"
 #include "soc/rtc.h"
+#include "soc/soc_caps.h"
+
 #include "soc/cache_reg.h"
 #include "soc/pcr_reg.h"
 #include "rom/ets_sys.h"
@@ -44,6 +46,7 @@
 
 ESP_LOG_ATTR_TAG(TAG, "boot.esp32h21");
 
+#if SOC_RTC_WDT_SUPPORTED
 static void wdt_reset_cpu0_info_enable(void)
 {
     REG_SET_BIT(PCR_ASSIST_CONF_REG, PCR_ASSIST_CLK_EN);
@@ -80,6 +83,7 @@ static void bootloader_super_wdt_auto_feed(void)
     REG_SET_BIT(LP_WDT_SWD_CONFIG_REG, LP_WDT_SWD_AUTO_FEED_EN);
     REG_WRITE(LP_WDT_SWD_WPROTECT_REG, 0);
 }
+#endif // SOC_RTC_WDT_SUPPORTED
 
 static inline void bootloader_hardware_init(void)
 {
@@ -106,7 +110,9 @@ esp_err_t bootloader_init(void)
 
     bootloader_hardware_init();
     bootloader_ana_reset_config();
+#if SOC_RTC_WDT_SUPPORTED
     bootloader_super_wdt_auto_feed();
+#endif
 
 // In RAM_APP, memory will be initialized in `call_start_cpu0`
 #if !CONFIG_APP_BUILD_TYPE_RAM
@@ -157,10 +163,14 @@ esp_err_t bootloader_init(void)
     }
 #endif // !CONFIG_APP_BUILD_TYPE_RAM
 
+#if SOC_RTC_WDT_SUPPORTED
     // check whether a WDT reset happened
     bootloader_check_wdt_reset();
+#endif
+#if SOC_RTC_WDT_SUPPORTED || SOC_WDT_SUPPORTED
     // config WDT
     bootloader_config_wdt();
+#endif
     // enable RNG early entropy source
     bootloader_enable_random();
 

components/bootloader_support/src/esp32h4/bootloader_esp32h4.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2025-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -16,6 +16,8 @@
 #include "soc/gpio_sig_map.h"
 #include "esp_cpu.h"
 #include "soc/rtc.h"
+#include "soc/soc_caps.h"
+
 #include "soc/cache_reg.h"
 #include "soc/io_mux_reg.h"
 #include "soc/pcr_reg.h"
@@ -42,6 +44,7 @@
 
 ESP_LOG_ATTR_TAG(TAG, "boot.esp32h4");
 
+#if SOC_RTC_WDT_SUPPORTED
 static void wdt_reset_cpu0_info_enable(void)
 {
     assist_debug_ll_enable_bus_clock(0, true);
@@ -77,6 +80,7 @@ static void bootloader_super_wdt_auto_feed(void)
     REG_SET_BIT(LP_WDT_SWD_CONFIG_REG, LP_WDT_SWD_AUTO_FEED_EN);
     REG_WRITE(LP_WDT_SWD_WPROTECT_REG, 0);
 }
+#endif // SOC_RTC_WDT_SUPPORTED
 
 static inline void bootloader_hardware_init(void)
 {
@@ -120,7 +124,9 @@ esp_err_t bootloader_init(void)
 
     bootloader_hardware_init();
     bootloader_ana_reset_config();
+#if SOC_RTC_WDT_SUPPORTED
     bootloader_super_wdt_auto_feed();
+#endif
 
 // In RAM_APP, memory will be initialized in `call_start_cpu0`
 #if !CONFIG_APP_BUILD_TYPE_RAM
@@ -172,10 +178,14 @@ esp_err_t bootloader_init(void)
 #endif // !CONFIG_APP_BUILD_TYPE_RAM
     bootloader_config_dcache();
     bootloader_config_icache1();
+#if SOC_RTC_WDT_SUPPORTED
     // check whether a WDT reset happened
     bootloader_check_wdt_reset();
+#endif
+#if SOC_RTC_WDT_SUPPORTED || SOC_WDT_SUPPORTED
     // config WDT
     bootloader_config_wdt();
+#endif
     // enable RNG early entropy source
     bootloader_enable_random();
 

components/bootloader_support/src/esp32p4/bootloader_esp32p4.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -18,6 +18,8 @@
 #include "soc/assist_debug_reg.h"
 #include "esp_cpu.h"
 #include "soc/rtc.h"
+#include "soc/soc_caps.h"
+
 #include "soc/cache_reg.h"
 #include "esp32p4/rom/ets_sys.h"
 #include "esp32p4/rom/spi_flash.h"
@@ -52,6 +54,7 @@
 
 ESP_LOG_ATTR_TAG(TAG, "boot.esp32p4");
 
+#if SOC_RTC_WDT_SUPPORTED
 static void wdt_reset_cpu0_info_enable(void)
 {
     _assist_debug_ll_enable_bus_clock(0, true);
@@ -90,6 +93,7 @@ static void bootloader_super_wdt_auto_feed(void)
     REG_SET_BIT(LP_WDT_SWD_CONFIG_REG, LP_WDT_SWD_AUTO_FEED_EN);
     REG_WRITE(LP_WDT_SWD_WPROTECT_REG, 0);
 }
+#endif // SOC_RTC_WDT_SUPPORTED
 
 static inline void bootloader_hardware_init(void)
 {
@@ -129,7 +133,9 @@ esp_err_t bootloader_init(void)
 
     bootloader_hardware_init();
     bootloader_ana_reset_config();
+#if SOC_RTC_WDT_SUPPORTED
     bootloader_super_wdt_auto_feed();
+#endif
 
 // In RAM_APP, memory will be initialized in `call_start_cpu0`
 #if !CONFIG_APP_BUILD_TYPE_RAM
@@ -181,10 +187,14 @@ esp_err_t bootloader_init(void)
     }
 #endif // !CONFIG_APP_BUILD_TYPE_RAM
 
+#if SOC_RTC_WDT_SUPPORTED
     // check whether a WDT reset happened
     bootloader_check_wdt_reset();
+#endif
+#if SOC_RTC_WDT_SUPPORTED || SOC_WDT_SUPPORTED
     // config WDT
     bootloader_config_wdt();
+#endif
     // enable RNG early entropy source
     bootloader_enable_random();
 

components/bootloader_support/src/esp32s2/bootloader_esp32s2.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2019-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2019-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -33,12 +33,15 @@
 #include "soc/extmem_reg.h"
 #include "soc/rtc.h"
 #include "soc/rtc_cntl_reg.h"
+#include "soc/soc_caps.h"
+
 #include "esp_efuse.h"
 #include "hal/mmu_hal.h"
 #include "hal/cache_hal.h"
 
 ESP_LOG_ATTR_TAG(TAG, "boot.esp32s2");
 
+#if SOC_RTC_WDT_SUPPORTED
 static void wdt_reset_cpu0_info_enable(void)
 {
     DPORT_REG_SET_BIT(DPORT_PERI_CLK_EN_REG, DPORT_PERI_EN_ASSIST_DEBUG);
@@ -100,11 +103,14 @@ static void bootloader_super_wdt_auto_feed(void)
 {
     REG_SET_BIT(RTC_CNTL_SWD_CONF_REG, RTC_CNTL_SWD_AUTO_FEED_EN);
 }
+#endif // SOC_RTC_WDT_SUPPORTED
 
 esp_err_t bootloader_init(void)
 {
     esp_err_t ret = ESP_OK;
+#if SOC_RTC_WDT_SUPPORTED
     bootloader_super_wdt_auto_feed();
+#endif
     // protect memory region
 
 // In RAM_APP, memory will be initialized in `call_start_cpu0`
@@ -163,10 +169,14 @@ esp_err_t bootloader_init(void)
     }
 #endif // !CONFIG_APP_BUILD_TYPE_RAM
 
+#if SOC_RTC_WDT_SUPPORTED
     // check whether a WDT reset happened
     bootloader_check_wdt_reset();
+#endif
+#if SOC_RTC_WDT_SUPPORTED || SOC_WDT_SUPPORTED
     // config WDT
     bootloader_config_wdt();
+#endif
     // enable RNG early entropy source
     bootloader_enable_random();
 

components/bootloader_support/src/esp32s3/bootloader_esp32s3.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2020-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2020-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -18,6 +18,8 @@
 #include "soc/rtc.h"
 #include "soc/rtc_cntl_reg.h"
 #include "soc/extmem_reg.h"
+#include "soc/soc_caps.h"
+
 
 #include "esp_rom_gpio.h"
 #include "esp_rom_efuse.h"
@@ -45,6 +47,7 @@
 
 ESP_LOG_ATTR_TAG(TAG, "boot.esp32s3");
 
+#if SOC_RTC_WDT_SUPPORTED
 static void wdt_reset_cpu0_info_enable(void)
 {
     REG_SET_BIT(SYSTEM_CPU_PERI_CLK_EN_REG, SYSTEM_CLK_EN_ASSIST_DEBUG);
@@ -128,6 +131,7 @@ static void bootloader_super_wdt_auto_feed(void)
     REG_SET_BIT(RTC_CNTL_SWD_CONF_REG, RTC_CNTL_SWD_AUTO_FEED_EN);
     REG_WRITE(RTC_CNTL_SWD_WPROTECT_REG, 0);
 }
+#endif // SOC_RTC_WDT_SUPPORTED
 
 static inline void bootloader_ana_reset_config(void)
 {
@@ -147,7 +151,9 @@ esp_err_t bootloader_init(void)
 #endif // XCHAL_ERRATUM_572
 
     bootloader_ana_reset_config();
+#if SOC_RTC_WDT_SUPPORTED
     bootloader_super_wdt_auto_feed();
+#endif
 
 // In RAM_APP, memory will be initialized in `call_start_cpu0`
 #if !CONFIG_APP_BUILD_TYPE_RAM
@@ -202,10 +208,14 @@ esp_err_t bootloader_init(void)
     }
 #endif // !CONFIG_APP_BUILD_TYPE_RAM
 
+#if SOC_RTC_WDT_SUPPORTED
     // check whether a WDT reset happened
     bootloader_check_wdt_reset();
+#endif
+#if SOC_RTC_WDT_SUPPORTED || SOC_WDT_SUPPORTED
     // config WDT
     bootloader_config_wdt();
+#endif
     // enable RNG early entropy source
     bootloader_enable_random();
     return ret;

components/bootloader_support/src/esp32s31/bootloader_esp32s31.c

@@ -11,6 +11,7 @@
 #include "flash_qio_mode.h"
 #include "bootloader_common.h"
 #include "bootloader_init.h"
+#include "soc/soc_caps.h"
 #include "bootloader_clock.h"
 #include "bootloader_flash_config.h"
 #include "bootloader_mem.h"
@@ -18,24 +19,30 @@
 #include "bootloader_flash_priv.h"
 #include "bootloader_soc.h"
 #include "esp_private/bootloader_flash_internal.h"
+#if SOC_RTC_WDT_SUPPORTED
 #include "soc/rtc_wdt_reg.h"
 #include "hal/rwdt_ll.h"
+#endif
 
 ESP_LOG_ATTR_TAG(TAG, "boot.esp32s31");
 
+#if SOC_RTC_WDT_SUPPORTED
 static void bootloader_super_wdt_auto_feed(void)
 {
     REG_WRITE(RTC_WDT_SWD_WPROTECT_REG, RTC_WDT_SWD_WKEY_VALUE);
     REG_SET_BIT(RTC_WDT_SWD_CONFIG_REG, RTC_WDT_SWD_AUTO_FEED_EN);
     REG_WRITE(RTC_WDT_SWD_WPROTECT_REG, 0);
 }
+#endif
 
 esp_err_t bootloader_init(void)
 {
     esp_err_t ret = ESP_OK;
 
     // bootloader_hardware_init();       // TODO: IDF-14696
+#if SOC_RTC_WDT_SUPPORTED
     bootloader_super_wdt_auto_feed();
+#endif
 
 // In RAM_APP, memory will be initialized in `call_start_cpu0`
 #if !CONFIG_APP_BUILD_TYPE_RAM
@@ -89,10 +96,14 @@ esp_err_t bootloader_init(void)
     }
 #endif // !CONFIG_APP_BUILD_TYPE_RAM
 
+#if SOC_RTC_WDT_SUPPORTED
     // check whether a WDT reset happened
     // bootloader_check_wdt_reset();     // TODO: IDF-14678
+#endif
+#if SOC_RTC_WDT_SUPPORTED || SOC_WDT_SUPPORTED
     // config WDT
     bootloader_config_wdt();
+#endif
     // enable RNG early entropy source
     bootloader_enable_random();
 

components/bootloader_support/src/flash_encryption/flash_encrypt.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -14,7 +14,9 @@
 #include "esp_efuse.h"
 #include "esp_efuse_table.h"
 #include "esp_log.h"
+#if SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "sdkconfig.h"
 #include "soc/soc_caps.h"
 
@@ -675,12 +677,16 @@ esp_err_t esp_flash_encrypt_region(uint32_t src_addr, size_t data_length)
         return ESP_FAIL;
     }
 
+#if SOC_RTC_WDT_SUPPORTED
     wdt_hal_context_t rtc_wdt_ctx = RWDT_HAL_CONTEXT_DEFAULT();
+#endif
 
     for (size_t i = 0; i < data_length; i += FLASH_SECTOR_SIZE) {
+#if SOC_RTC_WDT_SUPPORTED
         wdt_hal_write_protect_disable(&rtc_wdt_ctx);
         wdt_hal_feed(&rtc_wdt_ctx);
         wdt_hal_write_protect_enable(&rtc_wdt_ctx);
+#endif
         uint32_t sec_start = i + src_addr;
         err = bootloader_flash_read(sec_start, buf, FLASH_SECTOR_SIZE, false);
         if (err != ESP_OK) {

components/esp_gdbstub/src/gdbstub.c

@@ -20,7 +20,9 @@
 
 #include "soc/soc_caps.h"
 #include "soc/interrupts.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 
 #if GDBSTUB_QXFER_FEATURES_ENABLED
 #define GDBSTUB_QXFER_SUPPORTED_STR ";qXfer:features:read+"
@@ -125,26 +127,35 @@ static uint32_t gdbstub_hton(uint32_t i)
     return __builtin_bswap32(i);
 }
 
+#if SOC_RTC_WDT_SUPPORTED
 static wdt_hal_context_t rtc_wdt_ctx = RWDT_HAL_CONTEXT_DEFAULT();
 static bool rtc_wdt_ctx_enabled = false;
+#endif
+#if SOC_WDT_SUPPORTED
 static wdt_hal_context_t wdt0_context = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
 static bool wdt0_context_enabled = false;
 #if TIMG_LL_GET(INST_NUM) >= 2
 static wdt_hal_context_t wdt1_context = {.inst = WDT_MWDT1, .mwdt_dev = &TIMERG1};
 static bool wdt1_context_enabled = false;
 #endif // TIMG_LL_GET(INST_NUM)
+#endif // SOC_WDT_SUPPORTED
 
 /**
  * Disable all enabled WDTs
  */
 static inline void disable_all_wdts(void)
 {
+#if SOC_WDT_SUPPORTED
     wdt0_context_enabled = wdt_hal_is_enabled(&wdt0_context);
     #if TIMG_LL_GET(INST_NUM) >= 2
     wdt1_context_enabled = wdt_hal_is_enabled(&wdt1_context);
     #endif
+#endif // SOC_WDT_SUPPORTED
+#if SOC_RTC_WDT_SUPPORTED
     rtc_wdt_ctx_enabled = wdt_hal_is_enabled(&rtc_wdt_ctx);
+#endif
 
+#if SOC_WDT_SUPPORTED
     /*Task WDT is the Main Watchdog Timer of Timer Group 0 */
     if (true == wdt0_context_enabled) {
         wdt_hal_write_protect_disable(&wdt0_context);
@@ -162,13 +173,16 @@ static inline void disable_all_wdts(void)
         wdt_hal_write_protect_enable(&wdt1_context);
     }
     #endif // TIMG_LL_GET(INST_NUM) >= 2
+#endif // SOC_WDT_SUPPORTED
 
+#if SOC_RTC_WDT_SUPPORTED
     if (true == rtc_wdt_ctx_enabled) {
         wdt_hal_write_protect_disable(&rtc_wdt_ctx);
         wdt_hal_disable(&rtc_wdt_ctx);
         wdt_hal_feed(&rtc_wdt_ctx);
         wdt_hal_write_protect_enable(&rtc_wdt_ctx);
     }
+#endif // SOC_RTC_WDT_SUPPORTED
 }
 
 /**
@@ -176,6 +190,7 @@ static inline void disable_all_wdts(void)
  */
 static inline void enable_all_wdts(void)
 {
+#if SOC_WDT_SUPPORTED
     /* Task WDT is the Main Watchdog Timer of Timer Group 0 */
     if (false == wdt0_context_enabled) {
         wdt_hal_write_protect_disable(&wdt0_context);
@@ -190,12 +205,15 @@ static inline void enable_all_wdts(void)
         wdt_hal_write_protect_enable(&wdt1_context);
     }
     #endif // TIMG_LL_GET(INST_NUM) >= 2
+#endif // SOC_WDT_SUPPORTED
 
+#if SOC_RTC_WDT_SUPPORTED
     if (false == rtc_wdt_ctx_enabled) {
         wdt_hal_write_protect_disable(&rtc_wdt_ctx);
         wdt_hal_enable(&rtc_wdt_ctx);
         wdt_hal_write_protect_enable(&rtc_wdt_ctx);
     }
+#endif // SOC_RTC_WDT_SUPPORTED
 }
 
 int getActiveTaskNum(void);

components/esp_hw_support/sleep_modes.c

@@ -68,7 +68,9 @@
 
 #include "hal/cache_ll.h"
 #include "hal/clk_tree_ll.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED || SOC_SLEEP_TGWDT_STOP_WORKAROUND
 #include "hal/wdt_hal.h"
+#endif
 #include "hal/uart_hal.h"
 #if SOC_TOUCH_SENSOR_SUPPORTED
 #include "hal/touch_sens_hal.h"
@@ -367,7 +369,7 @@ void esp_sleep_overhead_out_time_refresh(void)
 static uint32_t get_power_down_flags(void);
 static uint32_t get_sleep_flags(uint32_t pd_flags, bool deepsleep);
 static uint32_t get_sleep_clock_icg_flags(void);
-#if CONFIG_ESP_SLEEP_ENABLE_RTC_WDT_IN_SLEEP
+#if CONFIG_ESP_SLEEP_ENABLE_RTC_WDT_IN_SLEEP && SOC_RTC_WDT_SUPPORTED
 static uint32_t get_sleep_rtc_wdt_timeout(uint64_t sleep_duration);
 static uint32_t calc_sleep_slow_clk_required_cycles(uint32_t timeout, uint32_t rtc_slow_clk_cal_period);
 #endif
@@ -740,7 +742,7 @@ static SLEEP_FN_ATTR void misc_modules_wake_prepare(uint32_t sleep_flags)
     pvt_func_enable(true);
 #endif
 
-#if CONFIG_PM_POWER_DOWN_PERIPHERAL_IN_LIGHT_SLEEP
+#if CONFIG_PM_POWER_DOWN_PERIPHERAL_IN_LIGHT_SLEEP && SOC_WDT_SUPPORTED
     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
         // the system is running, after waking up from pd_top sleep, shut it down by software here.
@@ -796,6 +798,7 @@ static SLEEP_FN_ATTR void misc_modules_wake_prepare(uint32_t sleep_flags)
  */
 static SLEEP_FN_ATTR void sleep_rtc_wdt_prepare(bool enable)
 {
+#if SOC_RTC_WDT_SUPPORTED
     wdt_hal_context_t rtc_wdt_ctx = RWDT_HAL_CONTEXT_DEFAULT();
     if (enable) {
         wdt_hal_init(&rtc_wdt_ctx, WDT_RWDT, 0, false);
@@ -816,6 +819,9 @@ static SLEEP_FN_ATTR void sleep_rtc_wdt_prepare(bool enable)
         wdt_hal_disable(&rtc_wdt_ctx);
         wdt_hal_write_protect_enable(&rtc_wdt_ctx);
     }
+#else
+    (void)enable;
+#endif /* SOC_RTC_WDT_SUPPORTED */
 }
 
 static SLEEP_FN_ATTR void sleep_low_power_clock_calibration(bool is_dslp)
@@ -1288,6 +1294,7 @@ static esp_err_t FORCE_IRAM_ATTR deep_sleep_start(bool allow_sleep_rejection)
     s_config.sleep_time_adjustment = DEEP_SLEEP_TIME_OVERHEAD_US;
 
     // Safety net: enable WDT in case exit from deep sleep fails
+#if SOC_RTC_WDT_SUPPORTED
     wdt_hal_context_t rtc_wdt_ctx = RWDT_HAL_CONTEXT_DEFAULT();
     bool rtc_wdt_was_enabled = wdt_hal_is_enabled(&rtc_wdt_ctx);    // If WDT was enabled in the user code, then do not change it here.
     if (!rtc_wdt_was_enabled) {
@@ -1295,6 +1302,7 @@ static esp_err_t FORCE_IRAM_ATTR deep_sleep_start(bool allow_sleep_rejection)
     } else {
         ESP_EARLY_LOGW(TAG, "RTC WDT is enabled and will not be reconfigured again!");
     }
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
 #if SOC_PMU_SUPPORTED
     uint32_t force_pd_flags = PMU_SLEEP_PD_TOP | PMU_SLEEP_PD_VDDSDIO | PMU_SLEEP_PD_MODEM | PMU_SLEEP_PD_HP_PERIPH \
@@ -1342,9 +1350,11 @@ static esp_err_t FORCE_IRAM_ATTR deep_sleep_start(bool allow_sleep_rejection)
         ESP_INFINITE_LOOP();
     }
     // Never returns here, except that the sleep is rejected.
+#if SOC_RTC_WDT_SUPPORTED
     if (!rtc_wdt_was_enabled) {
         sleep_rtc_wdt_prepare(false);
     }
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
 #if CONFIG_ESP_INT_WDT && CONFIG_ESP32_ECO3_CACHE_LOCK_FIX
     // Configure WDT to use livelock workaround timeout after releasing other CPU
@@ -1636,6 +1646,7 @@ esp_err_t esp_light_sleep_start(void)
     periph_inform_out_light_sleep_overhead(s_config.sleep_time_adjustment - sleep_time_overhead_in);
 
     // Safety net: enable WDT in case exit from light sleep fails
+#if SOC_RTC_WDT_SUPPORTED
     wdt_hal_context_t rtc_wdt_ctx = RWDT_HAL_CONTEXT_DEFAULT();
     bool rtc_wdt_was_enabled = wdt_hal_is_enabled(&rtc_wdt_ctx);    // If WDT was enabled in the user code, then do not change it here.
     if (!rtc_wdt_was_enabled) {
@@ -1643,6 +1654,7 @@ esp_err_t esp_light_sleep_start(void)
     } else {
         ESP_EARLY_LOGW(TAG, "RTC WDT is enabled and will not be reconfigured again!");
     }
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
     esp_err_t err = ESP_OK;
     int64_t final_sleep_duration_us = (int64_t)s_config.sleep_duration - (int64_t)s_config.sleep_time_adjustment;
@@ -1724,9 +1736,11 @@ esp_err_t esp_light_sleep_start(void)
 #endif
 #endif
 
+#if SOC_RTC_WDT_SUPPORTED
     if (!rtc_wdt_was_enabled) {
         sleep_rtc_wdt_prepare(false);
     }
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
 #if CONFIG_ESP_TASK_WDT_USE_ESP_TIMER
     /* Restart the Task Watchdog timer as it was stopped before sleeping. */
@@ -3016,7 +3030,7 @@ static SLEEP_FN_ATTR uint32_t get_sleep_flags(uint32_t sleep_flags, bool deepsle
     }
 #endif
 
-#if CONFIG_ESP_SLEEP_ENABLE_RTC_WDT_IN_SLEEP
+#if CONFIG_ESP_SLEEP_ENABLE_RTC_WDT_IN_SLEEP && SOC_RTC_WDT_SUPPORTED
     if (s_config.wakeup_triggers & RTC_TIMER_TRIG_EN) {
         sleep_flags |= RTC_SLEEP_USE_RTC_WDT;
     } else {
@@ -3075,7 +3089,7 @@ static SLEEP_FN_ATTR uint32_t get_sleep_clock_icg_flags(void)
     return clk_flags;
 }
 
-#if CONFIG_ESP_SLEEP_ENABLE_RTC_WDT_IN_SLEEP
+#if CONFIG_ESP_SLEEP_ENABLE_RTC_WDT_IN_SLEEP && SOC_RTC_WDT_SUPPORTED
 /* TODO: PM-609 */
 /* Calculate drift cycles of rtc slow clock in long-term working scenarios. */
 static SLEEP_FN_ATTR uint32_t calc_sleep_slow_clk_required_cycles(uint32_t timeout, uint32_t rtc_slow_clk_cal_period)

components/esp_system/CMakeLists.txt

@@ -37,15 +37,19 @@ else()
             "esp_ipc.c"
             "esp_err.c"
             "freertos_hooks.c"
-            "int_wdt.c"
             "panic.c"
             "esp_system.c"
             "startup.c"
             "startup_funcs.c"
             "system_time.c"
             "stack_check.c"
-            "ubsan.c"
+            "ubsan.c")
-            "xt_wdt.c")
+    if(CONFIG_SOC_WDT_SUPPORTED)
+        list(APPEND srcs "int_wdt.c")
+    endif()
+    if(CONFIG_SOC_XT_WDT_SUPPORTED)
+        list(APPEND srcs "xt_wdt.c")
+    endif()
 
     if(CONFIG_ESP_TASK_WDT_EN)
         list(APPEND srcs "task_wdt/task_wdt.c")

components/esp_system/Kconfig

@@ -269,6 +269,7 @@ menu "ESP System Settings"
 
     config ESP_INT_WDT
         bool "Interrupt watchdog"
+        depends on SOC_WDT_SUPPORTED
         default y
         help
             This watchdog timer can detect if the FreeRTOS tick interrupt has not been called for a certain time,
@@ -294,6 +295,7 @@ menu "ESP System Settings"
 
     config ESP_TASK_WDT_EN
         bool "Enable Task Watchdog Timer"
+        depends on SOC_WDT_SUPPORTED
         default y
         help
             The Task Watchdog Timer can be used to make sure individual tasks are still

components/esp_system/panic.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -16,8 +16,10 @@
 #include "esp_cpu.h"
 #include "soc/rtc.h"
 #include "hal/timer_hal.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_types.h"
 #include "hal/wdt_hal.h"
+#endif
 #include "esp_private/esp_int_wdt.h"
 
 #include "esp_private/panic_internal.h"
@@ -72,7 +74,9 @@
 bool g_panic_abort = false;
 char *g_panic_abort_details = NULL;
 
+#if SOC_RTC_WDT_SUPPORTED
 static wdt_hal_context_t rtc_wdt_ctx = RWDT_HAL_CONTEXT_DEFAULT();
+#endif
 
 static uint32_t DRAM_ATTR g_panic_entry_count[CONFIG_FREERTOS_NUMBER_OF_CORES] = {0}; // Number of times panic handler has been entered per core since multiple cores can enter the panic handler simultaneously
 
@@ -177,6 +181,7 @@ static void print_abort_details(const void *f)
 
 /********************** Panic handler watchdog timer functions **********************/
 
+#if SOC_WDT_SUPPORTED
 /* This function disables the Timer Group WDTs */
 void esp_panic_handler_disable_timg_wdts(void)
 {
@@ -192,7 +197,13 @@ void esp_panic_handler_disable_timg_wdts(void)
     wdt_hal_write_protect_enable(&wdt1_context);
 #endif /* TIMG_LL_GET(INST_NUM) >= 2 */
 }
+#else /* SOC_WDT_SUPPORTED */
+void esp_panic_handler_disable_timg_wdts(void)
+{
+}
+#endif /* SOC_WDT_SUPPORTED */
 
+#if SOC_RTC_WDT_SUPPORTED
 /* This function enables the RTC WDT with the given timeout in milliseconds */
 void esp_panic_handler_enable_rtc_wdt(uint32_t timeout_ms)
 {
@@ -204,7 +215,14 @@ void esp_panic_handler_enable_rtc_wdt(uint32_t timeout_ms)
     wdt_hal_enable(&rtc_wdt_ctx);
     wdt_hal_write_protect_enable(&rtc_wdt_ctx);
 }
+#else /* SOC_RTC_WDT_SUPPORTED */
+void esp_panic_handler_enable_rtc_wdt(uint32_t timeout_ms)
+{
+    (void)timeout_ms;
+}
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 /* Feed the watchdogs if they are enabled and if we are not already in the panic handler */
 void esp_panic_handler_feed_wdts(void)
 {
@@ -217,6 +235,7 @@ void esp_panic_handler_feed_wdts(void)
         return;
     }
 
+#if SOC_WDT_SUPPORTED
     // Feed Timer Group 0 WDT
     wdt_hal_context_t wdt0_context = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
     if (wdt_hal_is_enabled(&wdt0_context)) {
@@ -234,26 +253,43 @@ void esp_panic_handler_feed_wdts(void)
         wdt_hal_write_protect_enable(&wdt1_context);
     }
 #endif /* TIMG_LL_GET(INST_NUM) >= 2 */
+#endif /* SOC_WDT_SUPPORTED */
 
+#if SOC_RTC_WDT_SUPPORTED
     // Feed RTC WDT
     if (wdt_hal_is_enabled(&rtc_wdt_ctx)) {
         wdt_hal_write_protect_disable(&rtc_wdt_ctx);
         wdt_hal_feed(&rtc_wdt_ctx);
         wdt_hal_write_protect_enable(&rtc_wdt_ctx);
     }
+#endif /* SOC_RTC_WDT_SUPPORTED */
 }
+#else /* SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED */
+void esp_panic_handler_feed_wdts(void)
+{
+}
+#endif /* SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED */
 
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 /* This function disables all the watchdogs */
 static inline void disable_all_wdts(void)
 {
+#if SOC_WDT_SUPPORTED
     //Disable Timer Group WDTs
     esp_panic_handler_disable_timg_wdts();
-
+#endif /* SOC_WDT_SUPPORTED */
+#if SOC_RTC_WDT_SUPPORTED
     //Disable RTC WDT
     wdt_hal_write_protect_disable(&rtc_wdt_ctx);
     wdt_hal_disable(&rtc_wdt_ctx);
     wdt_hal_write_protect_enable(&rtc_wdt_ctx);
+#endif /* SOC_RTC_WDT_SUPPORTED */
 }
+#else /* SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED */
+static inline void disable_all_wdts(void)
+{
+}
+#endif /* SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED */
 
 /* IRAM-only halt stub: reset modules, then loop */
 void IRAM_ATTR esp_panic_handler_reset_modules_on_exit_and_halt(void)

components/esp_system/port/cpu_start.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -64,8 +64,10 @@
 #include "esp_memprot.h"
 #elif CONFIG_IDF_TARGET_ESP32H4
 #include "esp_memprot.h"
+#elif CONFIG_IDF_TARGET_ESP32S31
 #endif
 
+#include "rom/ets_sys.h"
 #include "esp_private/cache_utils.h"
 #include "esp_private/rtc_clk.h"
 #include "esp_rtc_time.h"
@@ -92,7 +94,9 @@
 #include "esp_private/crosscore_int.h"
 
 #include "esp_private/sleep_gpio.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "soc/rtc.h"
 #include "hal/cache_hal.h"
 #include "hal/cache_ll.h"
@@ -564,6 +568,7 @@ FORCE_INLINE_ATTR IRAM_ATTR void ext_mem_init(void)
 
 MSPI_INIT_ATTR void sys_rtc_init(const soc_reset_reason_t *rst_reas)
 {
+#if SOC_RTC_WDT_SUPPORTED
 #if CONFIG_IDF_TARGET_ESP32P4
 #define RWDT_RESET           RESET_REASON_CORE_RWDT
 #define MWDT_RESET           RESET_REASON_CORE_MWDT
@@ -585,6 +590,7 @@ MSPI_INIT_ATTR void sys_rtc_init(const soc_reset_reason_t *rst_reas)
         wdt_hal_write_protect_enable(&rtc_wdt_ctx);
     }
 #endif
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
     // Configure the power related stuff. After this the MSPI timing tuning can be done.
     esp_rtc_init();

components/esp_system/port/panic_handler.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -27,8 +27,10 @@
 #include "esp_private/panic_internal.h"
 #include "esp_private/panic_reason.h"
 
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_types.h"
 #include "hal/wdt_hal.h"
+#endif
 
 #if CONFIG_ESP_SYSTEM_HW_STACK_GUARD
 #include "esp_private/hw_stack_guard.h"
@@ -137,9 +139,9 @@ static void panic_handler(void *frame, bool pseudo_excause)
      *
      * We do this before we increment the panic handler entry count to ensure that the WDTs are fed.
      */
-#if CONFIG_ESP_SYSTEM_SINGLE_CORE_MODE
+#if (SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED) && CONFIG_ESP_SYSTEM_SINGLE_CORE_MODE
     esp_panic_handler_feed_wdts();
-#endif // CONFIG_ESP_SYSTEM_SINGLE_CORE_MODE
+#endif // (SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED) && CONFIG_ESP_SYSTEM_SINGLE_CORE_MODE
 
     /* Increment the panic handler entry count */
     esp_panic_handler_increment_entry_count();
@@ -213,18 +215,22 @@ static void panic_handler(void *frame, bool pseudo_excause)
      * TODO: Make the timeout configurable or more intelligent based on the panic reason and the
      * config options.
      */
+#if SOC_RTC_WDT_SUPPORTED
 #if CONFIG_ESP_SYSTEM_PANIC_REBOOT_DELAY_SECONDS
     esp_panic_handler_enable_rtc_wdt((CONFIG_ESP_SYSTEM_PANIC_REBOOT_DELAY_SECONDS + 10) * 1000);
 #else
     esp_panic_handler_enable_rtc_wdt(10000);
 #endif /* CONFIG_ESP_SYSTEM_PANIC_REBOOT_DELAY_SECONDS */
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
+#if SOC_WDT_SUPPORTED
     /* Before we stall the other CPU, we need to disable all WDTs except the RTC WDT.
      * This is because the TIMG WDTs cannot reset the RTC subsystem, which stores the CPU stalling
      * configuration. If the other CPU is stalled and the TIMG WDTs trigger before we can unstall the
      * CPU then we have a chance of locking up the system without rebooting it.
      */
     esp_panic_handler_disable_timg_wdts();
+#endif /* SOC_WDT_SUPPORTED */
 
 #if !CONFIG_ESP_SYSTEM_SINGLE_CORE_MODE
     esp_rom_delay_us(1);

components/esp_system/port/soc/esp32/clk.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -10,7 +10,9 @@
 #include "esp_private/periph_ctrl.h"
 #include "esp_private/esp_clk.h"
 #include "bootloader_clock.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 
 #include "esp_private/spi_share_hw_ctrl.h"
 
@@ -140,7 +142,7 @@ __attribute__((weak)) void esp_clk_init(void)
     rtc_clk_8m_enable(true, rc_fast_d256_is_enabled);
     rtc_clk_fast_src_set(SOC_RTC_FAST_CLK_SRC_RC_FAST);
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // WDT uses a SLOW_CLK clock source. After a function select_rtc_slow_clk a frequency of this source can changed.
     // If the frequency changes from 150kHz to 32kHz, then the timeout set for the WDT will increase 4.6 times.
     // Therefore, for the time of frequency change, set a new lower timeout value (1.6 sec).
@@ -165,7 +167,7 @@ __attribute__((weak)) void esp_clk_init(void)
     select_rtc_slow_clk(SLOW_CLK_150K);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // After changing a frequency WDT timeout needs to be set for new frequency.
     stage_timeout_ticks = (uint32_t)((uint64_t)CONFIG_BOOTLOADER_WDT_TIME_MS * rtc_clk_slow_freq_get_hz() / 1000);
     wdt_hal_write_protect_disable(&rtc_wdt_ctx);

components/esp_system/port/soc/esp32/system_internal.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2018-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2018-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -12,6 +12,7 @@
 #include "esp_log.h"
 #include "esp_ipc_isr.h"
 #include "sdkconfig.h"
+#include "soc/soc_caps.h"
 #include "esp_rom_serial_output.h"
 #include "soc/dport_reg.h"
 #include "soc/gpio_reg.h"
@@ -19,7 +20,9 @@
 #include "esp_cpu.h"
 #include "soc/rtc.h"
 #include "esp_private/rtc_clk.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "hal/uart_ll.h"
 #include "soc/soc_memory_layout.h"
 #include "esp_private/cache_err_int.h"
@@ -72,6 +75,7 @@ void esp_restart_noos(void)
     // Disable interrupts
     esp_cpu_intr_disable(0xFFFFFFFF);
 
+#if SOC_RTC_WDT_SUPPORTED
     // Enable RTC watchdog for 1 second
     wdt_hal_context_t rtc_wdt_ctx;
     wdt_hal_init(&rtc_wdt_ctx, WDT_RWDT, 0, false);
@@ -82,6 +86,7 @@ void esp_restart_noos(void)
 
     //Enable flash boot mode so that flash booting after restart is protected by the RTC WDT.
     wdt_hal_set_flashboot_en(&rtc_wdt_ctx, true);
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
     // Reset and stall the other CPU.
     // CPU must be reset before stalling, in case it was running a s32c1i
@@ -95,6 +100,7 @@ void esp_restart_noos(void)
     // Other core is now stalled, can access DPORT registers directly
     esp_ipc_isr_stall_abort();
 
+#if SOC_WDT_SUPPORTED
     //Todo: Refactor to use Interrupt or Task Watchdog API, and a system level WDT context
     // Disable TG0/TG1 watchdogs
     wdt_hal_context_t wdt0_context = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
@@ -106,6 +112,7 @@ void esp_restart_noos(void)
     wdt_hal_write_protect_disable(&wdt1_context);
     wdt_hal_disable(&wdt1_context);
     wdt_hal_write_protect_enable(&wdt1_context);
+#endif /* SOC_WDT_SUPPORTED */
 
 #ifdef CONFIG_FREERTOS_TASK_CREATE_ALLOW_EXT_MEM
     if (esp_ptr_external_ram(esp_cpu_get_sp())) {

components/esp_system/port/soc/esp32c2/clk.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -21,7 +21,9 @@
 #include "soc/soc.h"
 #include "soc/rtc.h"
 #include "soc/rtc_periph.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "esp_private/periph_ctrl.h"
 #include "bootloader_clock.h"
 #include "soc/syscon_reg.h"
@@ -86,7 +88,7 @@ __attribute__((weak)) void esp_clk_init(void)
     rtc_clk_fast_src_set(SOC_RTC_FAST_CLK_SRC_RC_FAST);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // WDT uses a SLOW_CLK clock source. After a function select_rtc_slow_clk a frequency of this source can changed.
     // If the frequency changes from 150kHz to 32kHz, then the timeout set for the WDT will increase 4.6 times.
     // Therefore, for the time of frequency change, set a new lower timeout value (1.6 sec on 40MHz XTAL and 2.5 sec on 26MHz XTAL).
@@ -114,7 +116,7 @@ __attribute__((weak)) void esp_clk_init(void)
     select_rtc_slow_clk(SLOW_CLK_RTC);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // After changing a frequency WDT timeout needs to be set for new frequency.
     stage_timeout_ticks = (uint32_t)((uint64_t)CONFIG_BOOTLOADER_WDT_TIME_MS * rtc_clk_slow_freq_get_hz() / 1000);
     wdt_hal_write_protect_disable(&rtc_wdt_ctx);

components/esp_system/port/soc/esp32c2/system_internal.c

@@ -1,11 +1,12 @@
 /*
- * SPDX-FileCopyrightText: 2018-2024 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2018-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
 
 #include <string.h>
 #include "sdkconfig.h"
+#include "soc/soc_caps.h"
 #include "esp_macros.h"
 #include "esp_system.h"
 #include "esp_private/system_internal.h"
@@ -20,7 +21,9 @@
 #include "esp_private/rtc_clk.h"
 #include "soc/syscon_reg.h"
 #include "soc/system_reg.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "hal/uart_ll.h"
 #include "esp_private/cache_err_int.h"
 
@@ -59,6 +62,7 @@ void esp_restart_noos(void)
 {
     // Disable interrupts
     rv_utils_intr_global_disable();
+#if SOC_RTC_WDT_SUPPORTED
     // Enable RTC watchdog for 1 second
     wdt_hal_context_t rtc_wdt_ctx;
     wdt_hal_init(&rtc_wdt_ctx, WDT_RWDT, 0, false);
@@ -69,12 +73,15 @@ void esp_restart_noos(void)
     //Enable flash boot mode so that flash booting after restart is protected by the RTC WDT.
     wdt_hal_set_flashboot_en(&rtc_wdt_ctx, true);
     wdt_hal_write_protect_enable(&rtc_wdt_ctx);
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
+#if SOC_WDT_SUPPORTED
     // Disable TG0/TG1 watchdogs
     wdt_hal_context_t wdt0_context = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
     wdt_hal_write_protect_disable(&wdt0_context);
     wdt_hal_disable(&wdt0_context);
     wdt_hal_write_protect_enable(&wdt0_context);
+#endif /* SOC_WDT_SUPPORTED */
 
     // Disable cache
     Cache_Disable_ICache();

components/esp_system/port/soc/esp32c3/clk.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -20,7 +20,9 @@
 #include "soc/rtc.h"
 #include "soc/rtc_periph.h"
 #include "soc/i2s_reg.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "hal/usb_serial_jtag_ll.h"
 #include "esp_private/periph_ctrl.h"
 #include "esp_private/esp_clk.h"
@@ -81,7 +83,7 @@ __attribute__((weak)) void esp_clk_init(void)
     rtc_clk_fast_src_set(SOC_RTC_FAST_CLK_SRC_RC_FAST);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // WDT uses a SLOW_CLK clock source. After a function select_rtc_slow_clk a frequency of this source can changed.
     // If the frequency changes from 150kHz to 32kHz, then the timeout set for the WDT will increase 4.6 times.
     // Therefore, for the time of frequency change, set a new lower timeout value (1.6 sec).
@@ -106,7 +108,7 @@ __attribute__((weak)) void esp_clk_init(void)
     select_rtc_slow_clk(SLOW_CLK_RTC);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // After changing a frequency WDT timeout needs to be set for new frequency.
     stage_timeout_ticks = (uint32_t)((uint64_t)CONFIG_BOOTLOADER_WDT_TIME_MS * rtc_clk_slow_freq_get_hz() / 1000);
     wdt_hal_write_protect_disable(&rtc_wdt_ctx);

components/esp_system/port/soc/esp32c3/system_internal.c

@@ -1,11 +1,12 @@
 /*
- * SPDX-FileCopyrightText: 2018-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2018-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
 
 #include <string.h>
 #include "sdkconfig.h"
+#include "soc/soc_caps.h"
 #include "esp_macros.h"
 #include "esp_system.h"
 #include "esp_private/system_internal.h"
@@ -21,7 +22,9 @@
 #include "soc/syscon_reg.h"
 #include "soc/system_reg.h"
 #include "soc/uart_reg.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "hal/uart_ll.h"
 #include "esp_private/cache_err_int.h"
 
@@ -68,6 +71,7 @@ void esp_restart_noos(void)
 {
     // Disable interrupts
     rv_utils_intr_global_disable();
+#if SOC_RTC_WDT_SUPPORTED
     // Enable RTC watchdog for 1 second
     wdt_hal_context_t rtc_wdt_ctx;
     wdt_hal_init(&rtc_wdt_ctx, WDT_RWDT, 0, false);
@@ -78,7 +82,9 @@ void esp_restart_noos(void)
     //Enable flash boot mode so that flash booting after restart is protected by the RTC WDT.
     wdt_hal_set_flashboot_en(&rtc_wdt_ctx, true);
     wdt_hal_write_protect_enable(&rtc_wdt_ctx);
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
+#if SOC_WDT_SUPPORTED
     // Disable TG0/TG1 watchdogs
     wdt_hal_context_t wdt0_context = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
     wdt_hal_write_protect_disable(&wdt0_context);
@@ -89,6 +95,7 @@ void esp_restart_noos(void)
     wdt_hal_write_protect_disable(&wdt1_context);
     wdt_hal_disable(&wdt1_context);
     wdt_hal_write_protect_enable(&wdt1_context);
+#endif /* SOC_WDT_SUPPORTED */
 
     // Disable cache
     Cache_Disable_ICache();

components/esp_system/port/soc/esp32c5/clk.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -22,7 +22,9 @@
 #include "soc/chip_revision.h"
 #include "esp_cpu.h"
 #include "hal/efuse_hal.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "hal/clk_tree_ll.h"
 #if SOC_MODEM_CLOCK_SUPPORTED
 #include "hal/modem_lpcon_ll.h"
@@ -74,7 +76,7 @@ __attribute__((weak)) void esp_clk_init(void)
 #endif
 #endif //!CONFIG_IDF_ENV_FPGA
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // WDT uses a SLOW_CLK clock source. After a function select_rtc_slow_clk a frequency of this source can changed.
     // If the frequency changes from 150kHz to 32kHz, then the timeout set for the WDT will increase 4.6 times.
     // Therefore, for the time of frequency change, set a new lower timeout value (1.6 sec).
@@ -98,7 +100,7 @@ __attribute__((weak)) void esp_clk_init(void)
     select_rtc_slow_clk(SOC_RTC_SLOW_CLK_SRC_RC_SLOW);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // After changing a frequency WDT timeout needs to be set for new frequency.
     stage_timeout_ticks = (uint32_t)((uint64_t)CONFIG_BOOTLOADER_WDT_TIME_MS * rtc_clk_slow_freq_get_hz() / 1000);
     wdt_hal_write_protect_disable(&rtc_wdt_ctx);

components/esp_system/port/soc/esp32c5/system_internal.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -20,7 +20,9 @@
 #include "soc/rtc.h"
 #include "esp_private/rtc_clk.h"
 #include "soc/uart_reg.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "hal/uart_ll.h"
 #if SOC_MODEM_CLOCK_SUPPORTED
 #include "hal/modem_syscon_ll.h"
@@ -107,6 +109,7 @@ void esp_restart_noos(void)
 {
     // Disable interrupts
     rv_utils_intr_global_disable();
+#if SOC_RTC_WDT_SUPPORTED
     // Enable RTC watchdog for 1 second
     wdt_hal_context_t rtc_wdt_ctx;
     wdt_hal_init(&rtc_wdt_ctx, WDT_RWDT, 0, false);
@@ -117,9 +120,11 @@ void esp_restart_noos(void)
     //Enable flash boot mode so that flash booting after restart is protected by the RTC WDT.
     wdt_hal_set_flashboot_en(&rtc_wdt_ctx, true);
     wdt_hal_write_protect_enable(&rtc_wdt_ctx);
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
     // C5 is a single core SoC, no need to reset and stall the other CPU
 
+#if SOC_WDT_SUPPORTED
     // Disable TG0/TG1 watchdogs
     wdt_hal_context_t wdt0_context = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
     wdt_hal_write_protect_disable(&wdt0_context);
@@ -130,6 +135,7 @@ void esp_restart_noos(void)
     wdt_hal_write_protect_disable(&wdt1_context);
     wdt_hal_disable(&wdt1_context);
     wdt_hal_write_protect_enable(&wdt1_context);
+#endif /* SOC_WDT_SUPPORTED */
 
     // Disable cache
     Cache_Disable_Cache();

components/esp_system/port/soc/esp32c6/clk.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -13,7 +13,9 @@
 #include "soc/soc.h"
 #include "soc/rtc.h"
 #include "esp_cpu.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "hal/clk_gate_ll.h"
 #include "hal/pmu_ll.h"
 #include "esp_private/esp_modem_clock.h"
@@ -56,7 +58,7 @@ __attribute__((weak)) void esp_clk_init(void)
     rtc_clk_fast_src_set(SOC_RTC_FAST_CLK_SRC_RC_FAST);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // WDT uses a SLOW_CLK clock source. After a function select_rtc_slow_clk a frequency of this source can changed.
     // If the frequency changes from 150kHz to 32kHz, then the timeout set for the WDT will increase 4.6 times.
     // Therefore, for the time of frequency change, set a new lower timeout value (1.6 sec).
@@ -80,7 +82,7 @@ __attribute__((weak)) void esp_clk_init(void)
     select_rtc_slow_clk(SOC_RTC_SLOW_CLK_SRC_RC_SLOW);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // After changing a frequency WDT timeout needs to be set for new frequency.
     stage_timeout_ticks = (uint32_t)((uint64_t)CONFIG_BOOTLOADER_WDT_TIME_MS * rtc_clk_slow_freq_get_hz() / 1000);
     wdt_hal_write_protect_disable(&rtc_wdt_ctx);

components/esp_system/port/soc/esp32c6/system_internal.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -15,12 +15,15 @@
 #include "riscv/rv_utils.h"
 #include "esp_rom_serial_output.h"
 #include "soc/gpio_reg.h"
+#include "soc/soc_caps.h"
 #include "esp_cpu.h"
 #include "soc/rtc.h"
 #include "esp_private/rtc_clk.h"
 #include "soc/uart_reg.h"
 #include "hal/uart_ll.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "hal/uart_ll.h"
 #include "hal/modem_syscon_ll.h"
 #include "hal/modem_lpcon_ll.h"
@@ -95,6 +98,7 @@ void esp_restart_noos(void)
 {
     // Disable interrupts
     rv_utils_intr_global_disable();
+#if SOC_RTC_WDT_SUPPORTED
     // Enable RTC watchdog for 1 second
     wdt_hal_context_t rtc_wdt_ctx;
     wdt_hal_init(&rtc_wdt_ctx, WDT_RWDT, 0, false);
@@ -105,9 +109,11 @@ void esp_restart_noos(void)
     //Enable flash boot mode so that flash booting after restart is protected by the RTC WDT.
     wdt_hal_set_flashboot_en(&rtc_wdt_ctx, true);
     wdt_hal_write_protect_enable(&rtc_wdt_ctx);
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
     // C6 is a single core SoC, no need to reset and stall the other CPU
 
+#if SOC_WDT_SUPPORTED
     // Disable TG0/TG1 watchdogs
     wdt_hal_context_t wdt0_context = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
     wdt_hal_write_protect_disable(&wdt0_context);
@@ -118,6 +124,7 @@ void esp_restart_noos(void)
     wdt_hal_write_protect_disable(&wdt1_context);
     wdt_hal_disable(&wdt1_context);
     wdt_hal_write_protect_enable(&wdt1_context);
+#endif /* SOC_WDT_SUPPORTED */
 
     // Disable cache
     Cache_Disable_ICache();

components/esp_system/port/soc/esp32c61/clk.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2024-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2024-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -18,7 +18,9 @@
 #include "soc/rtc.h"
 #include "soc/rtc_periph.h"
 #include "esp_cpu.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "esp_private/esp_modem_clock.h"
 #include "esp_private/periph_ctrl.h"
 #include "esp_private/esp_clk.h"
@@ -54,7 +56,7 @@ __attribute__((weak)) void esp_clk_init(void)
     rtc_clk_fast_src_set(SOC_RTC_FAST_CLK_SRC_RC_FAST);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // WDT uses a SLOW_CLK clock source. After a function select_rtc_slow_clk a frequency of this source can changed.
     // If the frequency changes from 150kHz to 32kHz, then the timeout set for the WDT will increase 4.6 times.
     // Therefore, for the time of frequency change, set a new lower timeout value (1.6 sec).
@@ -78,7 +80,7 @@ __attribute__((weak)) void esp_clk_init(void)
     select_rtc_slow_clk(SOC_RTC_SLOW_CLK_SRC_RC_SLOW);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // After changing a frequency WDT timeout needs to be set for new frequency.
     stage_timeout_ticks = (uint32_t)((uint64_t)CONFIG_BOOTLOADER_WDT_TIME_MS * rtc_clk_slow_freq_get_hz() / 1000);
     wdt_hal_write_protect_disable(&rtc_wdt_ctx);

components/esp_system/port/soc/esp32c61/system_internal.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2024-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2024-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -15,12 +15,15 @@
 #include "riscv/rv_utils.h"
 #include "esp_rom_serial_output.h"
 #include "soc/gpio_reg.h"
+#include "soc/soc_caps.h"
 #include "esp_cpu.h"
 #include "soc/rtc.h"
 #include "esp_private/rtc_clk.h"
 #include "soc/uart_reg.h"
 #include "hal/uart_ll.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "hal/uart_ll.h"
 #include "esp_private/cache_err_int.h"
 
@@ -107,6 +110,7 @@ void esp_restart_noos(void)
 {
     // Disable interrupts
     rv_utils_intr_global_disable();
+#if SOC_RTC_WDT_SUPPORTED
     // Enable RTC watchdog for 1 second
     wdt_hal_context_t rtc_wdt_ctx;
     wdt_hal_init(&rtc_wdt_ctx, WDT_RWDT, 0, false);
@@ -117,9 +121,11 @@ void esp_restart_noos(void)
     //Enable flash boot mode so that flash booting after restart is protected by the RTC WDT.
     wdt_hal_set_flashboot_en(&rtc_wdt_ctx, true);
     wdt_hal_write_protect_enable(&rtc_wdt_ctx);
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
     // C61 is a single core SoC, no need to reset and stall the other CPU
 
+#if SOC_WDT_SUPPORTED
     // Disable TG0/TG1 watchdogs
     wdt_hal_context_t wdt0_context = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
     wdt_hal_write_protect_disable(&wdt0_context);
@@ -130,6 +136,7 @@ void esp_restart_noos(void)
     wdt_hal_write_protect_disable(&wdt1_context);
     wdt_hal_disable(&wdt1_context);
     wdt_hal_write_protect_enable(&wdt1_context);
+#endif /* SOC_WDT_SUPPORTED */
 
     // Disable cache
     Cache_Disable_Cache();

components/esp_system/port/soc/esp32h2/clk.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -19,7 +19,9 @@
 #include "soc/soc.h"
 #include "soc/rtc.h"
 #include "soc/rtc_periph.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "hal/clk_gate_ll.h"
 #include "hal/pmu_ll.h"
 #include "esp_private/esp_modem_clock.h"
@@ -63,7 +65,7 @@ __attribute__((weak)) void esp_clk_init(void)
     rtc_clk_fast_src_set(SOC_RTC_FAST_CLK_SRC_RC_FAST);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // WDT uses a SLOW_CLK clock source. After a function select_rtc_slow_clk a frequency of this source can changed.
     // If the frequency changes from 150kHz to 32kHz, then the timeout set for the WDT will increase 4.6 times.
     // Therefore, for the time of frequency change, set a new lower timeout value (2 sec).
@@ -89,7 +91,7 @@ __attribute__((weak)) void esp_clk_init(void)
     select_rtc_slow_clk(SOC_RTC_SLOW_CLK_SRC_RC_SLOW);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // After changing a frequency WDT timeout needs to be set for new frequency.
     stage_timeout_ticks = (uint32_t)((uint64_t)CONFIG_BOOTLOADER_WDT_TIME_MS * rtc_clk_slow_freq_get_hz() / 1000);
     wdt_hal_write_protect_disable(&rtc_wdt_ctx);

components/esp_system/port/soc/esp32h2/system_internal.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -16,11 +16,14 @@
 #include "riscv/interrupt.h"
 #include "esp_rom_serial_output.h"
 #include "soc/gpio_reg.h"
+#include "soc/soc_caps.h"
 #include "esp_cpu.h"
 #include "soc/rtc.h"
 #include "esp_private/rtc_clk.h"
 #include "soc/uart_reg.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "hal/uart_ll.h"
 #include "hal/spimem_flash_ll.h"
 #include "hal/uart_ll.h"
@@ -93,6 +96,7 @@ void esp_restart_noos(void)
 {
     // Disable interrupts
     rv_utils_intr_global_disable();
+#if SOC_RTC_WDT_SUPPORTED
     // Enable RTC watchdog for 1 second
     wdt_hal_context_t rtc_wdt_ctx;
     wdt_hal_init(&rtc_wdt_ctx, WDT_RWDT, 0, false);
@@ -103,7 +107,9 @@ void esp_restart_noos(void)
     //Enable flash boot mode so that flash booting after restart is protected by the RTC WDT.
     wdt_hal_set_flashboot_en(&rtc_wdt_ctx, true);
     wdt_hal_write_protect_enable(&rtc_wdt_ctx);
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
+#if SOC_WDT_SUPPORTED
     // Disable TG0/TG1 watchdogs
     wdt_hal_context_t wdt0_context = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
     wdt_hal_write_protect_disable(&wdt0_context);
@@ -114,6 +120,7 @@ void esp_restart_noos(void)
     wdt_hal_write_protect_disable(&wdt1_context);
     wdt_hal_disable(&wdt1_context);
     wdt_hal_write_protect_enable(&wdt1_context);
+#endif /* SOC_WDT_SUPPORTED */
 
     // Disable cache
     Cache_Disable_ICache();

components/esp_system/port/soc/esp32h21/clk.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2024-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2024-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -18,7 +18,9 @@
 #include "soc/soc.h"
 #include "soc/rtc.h"
 #include "soc/rtc_periph.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "esp_private/esp_modem_clock.h"
 #include "esp_private/periph_ctrl.h"
 #include "esp_private/esp_clk.h"
@@ -54,7 +56,7 @@ __attribute__((weak)) void esp_clk_init(void)
     rtc_clk_fast_src_set(SOC_RTC_FAST_CLK_SRC_RC_FAST);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // WDT uses a SLOW_CLK clock source. After a function select_rtc_slow_clk a frequency of this source can changed.
     // If the frequency changes from 150kHz to 32kHz, then the timeout set for the WDT will increase 4.6 times.
     // Therefore, for the time of frequency change, set a new lower timeout value (2 sec).
@@ -80,7 +82,7 @@ __attribute__((weak)) void esp_clk_init(void)
     select_rtc_slow_clk(SOC_RTC_SLOW_CLK_SRC_RC_SLOW_D4);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // After changing a frequency WDT timeout needs to be set for new frequency.
     stage_timeout_ticks = (uint32_t)((uint64_t)CONFIG_BOOTLOADER_WDT_TIME_MS * rtc_clk_slow_freq_get_hz() / 1000);
     wdt_hal_write_protect_disable(&rtc_wdt_ctx);

components/esp_system/port/soc/esp32h21/system_internal.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2024-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2024-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -21,8 +21,9 @@
 #include "esp_private/rtc_clk.h"
 #include "soc/uart_reg.h"
 #include "hal/uart_ll.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
-#include "hal/uart_ll.h"
+#endif
 #include "hal/spimem_flash_ll.h"
 #include "esp_private/cache_err_int.h"
 
@@ -98,6 +99,7 @@ void esp_restart_noos(void)
 {
     // Disable interrupts
     rv_utils_intr_global_disable();
+#if SOC_RTC_WDT_SUPPORTED
     // Enable RTC watchdog for 1 second
     wdt_hal_context_t rtc_wdt_ctx;
     wdt_hal_init(&rtc_wdt_ctx, WDT_RWDT, 0, false);
@@ -108,7 +110,9 @@ void esp_restart_noos(void)
     //Enable flash boot mode so that flash booting after restart is protected by the RTC WDT.
     wdt_hal_set_flashboot_en(&rtc_wdt_ctx, true);
     wdt_hal_write_protect_enable(&rtc_wdt_ctx);
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
+#if SOC_WDT_SUPPORTED
     // Disable TG0/TG1 watchdogs
     wdt_hal_context_t wdt0_context = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
     wdt_hal_write_protect_disable(&wdt0_context);
@@ -119,6 +123,7 @@ void esp_restart_noos(void)
     wdt_hal_write_protect_disable(&wdt1_context);
     wdt_hal_disable(&wdt1_context);
     wdt_hal_write_protect_enable(&wdt1_context);
+#endif /* SOC_WDT_SUPPORTED */
 
     // Disable cache
     Cache_Disable_ICache();

components/esp_system/port/soc/esp32h4/clk.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2025-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -18,7 +18,9 @@
 #include "soc/rtc.h"
 #include "soc/rtc_periph.h"
 #include "esp_cpu.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "esp_private/periph_ctrl.h"
 #include "esp_private/esp_clk.h"
 #include "esp_private/esp_pmu.h"
@@ -55,7 +57,7 @@ __attribute__((weak)) void esp_clk_init(void)
     rtc_clk_fast_src_set(SOC_RTC_FAST_CLK_SRC_RC_FAST);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // WDT uses a SLOW_CLK clock source. After a function select_rtc_slow_clk a frequency of this source can changed.
     // If the frequency changes from 150kHz to 32kHz, then the timeout set for the WDT will increase 4.6 times.
     // Therefore, for the time of frequency change, set a new lower timeout value (2 sec).
@@ -78,7 +80,7 @@ __attribute__((weak)) void esp_clk_init(void)
     select_rtc_slow_clk(SOC_RTC_SLOW_CLK_SRC_RC_SLOW_D4);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // After changing a frequency WDT timeout needs to be set for new frequency.
     stage_timeout_ticks = (uint32_t)((uint64_t)CONFIG_BOOTLOADER_WDT_TIME_MS * rtc_clk_slow_freq_get_hz() / 1000);
     wdt_hal_write_protect_disable(&rtc_wdt_ctx);

components/esp_system/port/soc/esp32h4/system_internal.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2025-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -20,10 +20,13 @@
 #include "soc/rtc.h"
 #include "esp_private/rtc_clk.h"
 #include "soc/uart_reg.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "hal/uart_ll.h"
 
 #include "esp32h4/rom/cache.h"
+#include "esp32h4/rom/ets_sys.h"
 // TODO: IDF-11911 need refactor
 
 void esp_system_reset_modules_on_exit(void)
@@ -92,6 +95,7 @@ void esp_restart_noos(void)
 {
     // Disable interrupts
     rv_utils_intr_global_disable();
+#if SOC_RTC_WDT_SUPPORTED
     // Enable RTC watchdog for 1 second
     wdt_hal_context_t rtc_wdt_ctx;
     wdt_hal_init(&rtc_wdt_ctx, WDT_RWDT, 0, false);
@@ -102,6 +106,7 @@ void esp_restart_noos(void)
     //Enable flash boot mode so that flash booting after restart is protected by the RTC WDT.
     wdt_hal_set_flashboot_en(&rtc_wdt_ctx, true);
     wdt_hal_write_protect_enable(&rtc_wdt_ctx);
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
     const uint32_t core_id = esp_cpu_get_core_id();
 #if !CONFIG_ESP_SYSTEM_SINGLE_CORE_MODE
@@ -110,6 +115,7 @@ void esp_restart_noos(void)
     esp_cpu_stall(other_core_id);
 #endif
 
+#if SOC_WDT_SUPPORTED
     // Disable TG0/TG1 watchdogs
     wdt_hal_context_t wdt0_context = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
     wdt_hal_write_protect_disable(&wdt0_context);
@@ -120,6 +126,7 @@ void esp_restart_noos(void)
     wdt_hal_write_protect_disable(&wdt1_context);
     wdt_hal_disable(&wdt1_context);
     wdt_hal_write_protect_enable(&wdt1_context);
+#endif /* SOC_WDT_SUPPORTED */
 
     // Disable cache
     Cache_Disable_Cache(CACHE_MAP_ALL);

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

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -21,7 +21,9 @@
 #include "esp_cpu.h"
 #include "mspi_timing_tuning_configs.h"
 #include "hal/clk_gate_ll.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "esp_private/esp_sleep_internal.h"
 #include "esp_private/esp_clk.h"
 #include "esp_private/esp_pmu.h"
@@ -64,7 +66,7 @@ __attribute__((weak)) void esp_clk_init(void)
 #error "No RTC fast clock source configured"
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // WDT uses a SLOW_CLK clock source. After a function select_rtc_slow_clk a frequency of this source can changed.
     // If the frequency changes from 150kHz to 32kHz, then the timeout set for the WDT will increase 4.6 times.
     // Therefore, for the time of frequency change, set a new lower timeout value (1.6 sec).
@@ -85,7 +87,7 @@ __attribute__((weak)) void esp_clk_init(void)
     select_rtc_slow_clk(SOC_RTC_SLOW_CLK_SRC_RC_SLOW);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // After changing a frequency WDT timeout needs to be set for new frequency.
     stage_timeout_ticks = (uint32_t)((uint64_t)CONFIG_BOOTLOADER_WDT_TIME_MS * rtc_clk_slow_freq_get_hz() / 1000);
     wdt_hal_write_protect_disable(&rtc_wdt_ctx);

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

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -15,14 +15,18 @@
 #include "riscv/rv_utils.h"
 #include "esp_rom_serial_output.h"
 #include "soc/gpio_reg.h"
+#include "soc/soc_caps.h"
 #include "esp_cpu.h"
 #include "soc/rtc.h"
 #include "esp_private/rtc_clk.h"
 #include "soc/uart_reg.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "esp_private/cache_err_int.h"
 
 #include "esp32p4/rom/cache.h"
+#include "esp32p4/rom/ets_sys.h"
 #include "esp32p4/rom/rtc.h"
 #include "soc/hp_sys_clkrst_reg.h"
 #include "soc/lp_clkrst_reg.h"
@@ -157,6 +161,7 @@ void esp_restart_noos(void)
 {
     // Disable interrupts
     rv_utils_intr_global_disable();
+#if SOC_RTC_WDT_SUPPORTED
     // Enable RTC watchdog for 1 second
     wdt_hal_context_t rtc_wdt_ctx;
     wdt_hal_init(&rtc_wdt_ctx, WDT_RWDT, 0, false);
@@ -167,6 +172,7 @@ void esp_restart_noos(void)
     //Enable flash boot mode so that flash booting after restart is protected by the RTC WDT.
     wdt_hal_set_flashboot_en(&rtc_wdt_ctx, true);
     wdt_hal_write_protect_enable(&rtc_wdt_ctx);
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
     const uint32_t core_id = esp_cpu_get_core_id();
 #if !CONFIG_ESP_SYSTEM_SINGLE_CORE_MODE
@@ -175,6 +181,7 @@ void esp_restart_noos(void)
     esp_cpu_stall(other_core_id);
 #endif
 
+#if SOC_WDT_SUPPORTED
     // Disable TG0/TG1 watchdogs
     wdt_hal_context_t wdt0_context = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
     wdt_hal_write_protect_disable(&wdt0_context);
@@ -185,6 +192,7 @@ void esp_restart_noos(void)
     wdt_hal_write_protect_disable(&wdt1_context);
     wdt_hal_disable(&wdt1_context);
     wdt_hal_write_protect_enable(&wdt1_context);
+#endif /* SOC_WDT_SUPPORTED */
 
     // Disable cache
 #if CONFIG_SPIRAM

components/esp_system/port/soc/esp32s2/clk.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -21,7 +21,9 @@
 #include "soc/rtc.h"
 #include "soc/rtc_periph.h"
 #include "soc/i2s_reg.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "esp_private/periph_ctrl.h"
 #include "esp_private/esp_clk.h"
 #include "bootloader_clock.h"
@@ -81,7 +83,7 @@ __attribute__((weak)) void esp_clk_init(void)
     rtc_clk_8m_enable(true, rc_fast_d256_is_enabled);
     rtc_clk_fast_src_set(SOC_RTC_FAST_CLK_SRC_RC_FAST);
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // WDT uses a SLOW_CLK clock source. After a function select_rtc_slow_clk a frequency of this source can changed.
     // If the frequency changes from 90kHz to 32kHz, then the timeout set for the WDT will increase 2.8 times.
     // Therefore, for the time of frequency change, set a new lower timeout value (1.6 sec).
@@ -106,7 +108,7 @@ __attribute__((weak)) void esp_clk_init(void)
     select_rtc_slow_clk(SLOW_CLK_RTC);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // After changing a frequency WDT timeout needs to be set for new frequency.
     stage_timeout_ticks = (uint32_t)((uint64_t)CONFIG_BOOTLOADER_WDT_TIME_MS * rtc_clk_slow_freq_get_hz() / 1000ULL);
     wdt_hal_write_protect_disable(&rtc_wdt_ctx);

components/esp_system/port/soc/esp32s2/system_internal.c

@@ -1,11 +1,12 @@
 /*
- * SPDX-FileCopyrightText: 2018-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2018-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
 
 #include <string.h>
 #include "sdkconfig.h"
+#include "soc/soc_caps.h"
 #include "esp_macros.h"
 #include "esp_system.h"
 #include "esp_private/system_internal.h"
@@ -20,7 +21,9 @@
 #include "soc/rtc.h"
 #include "esp_private/rtc_clk.h"
 #include "soc/syscon_reg.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "hal/uart_ll.h"
 #include "soc/soc_memory_layout.h"
 
@@ -69,6 +72,7 @@ void esp_restart_noos(void)
     // Disable interrupts
     esp_cpu_intr_disable(0xFFFFFFFF);
 
+#if SOC_RTC_WDT_SUPPORTED
     // Enable RTC watchdog for 1 second
     wdt_hal_context_t rtc_wdt_ctx;
     wdt_hal_init(&rtc_wdt_ctx, WDT_RWDT, 0, false);
@@ -79,7 +83,9 @@ void esp_restart_noos(void)
     //Enable flash boot mode so that flash booting after restart is protected by the RTC WDT.
     wdt_hal_set_flashboot_en(&rtc_wdt_ctx, true);
     wdt_hal_write_protect_enable(&rtc_wdt_ctx);
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
+#if SOC_WDT_SUPPORTED
     //Todo: Refactor to use Interrupt or Task Watchdog API, and a system level WDT context
     // Disable TG0/TG1 watchdogs
     wdt_hal_context_t wdt0_context = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
@@ -91,6 +97,7 @@ void esp_restart_noos(void)
     wdt_hal_write_protect_disable(&wdt1_context);
     wdt_hal_disable(&wdt1_context);
     wdt_hal_write_protect_enable(&wdt1_context);
+#endif /* SOC_WDT_SUPPORTED */
 
 #ifdef CONFIG_FREERTOS_TASK_CREATE_ALLOW_EXT_MEM
     if (esp_ptr_external_ram(esp_cpu_get_sp())) {

components/esp_system/port/soc/esp32s3/clk.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -20,7 +20,9 @@
 #include "soc/rtc.h"
 #include "soc/rtc_periph.h"
 #include "soc/i2s_reg.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "hal/usb_serial_jtag_ll.h"
 #include "esp_private/periph_ctrl.h"
 #include "esp_private/esp_clk.h"
@@ -83,7 +85,7 @@ __attribute__((weak)) void esp_clk_init(void)
     rtc_clk_8m_enable(true, rc_fast_d256_is_enabled);
     rtc_clk_fast_src_set(SOC_RTC_FAST_CLK_SRC_RC_FAST);
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // WDT uses a SLOW_CLK clock source. After a function select_rtc_slow_clk a frequency of this source can changed.
     // If the frequency changes from 150kHz to 32kHz, then the timeout set for the WDT will increase 4.6 times.
     // Therefore, for the time of frequency change, set a new lower timeout value (1.6 sec).
@@ -108,7 +110,7 @@ __attribute__((weak)) void esp_clk_init(void)
     select_rtc_slow_clk(SLOW_CLK_RTC);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // After changing a frequency WDT timeout needs to be set for new frequency.
     stage_timeout_ticks = (uint32_t)((uint64_t)CONFIG_BOOTLOADER_WDT_TIME_MS * rtc_clk_slow_freq_get_hz() / 1000ULL);
     wdt_hal_write_protect_disable(&rtc_wdt_ctx);

components/esp_system/port/soc/esp32s3/system_internal.c

@@ -1,6 +1,6 @@
 
 /*
- * SPDX-FileCopyrightText: 2018-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2018-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -21,7 +21,9 @@
 #include "soc/rtc.h"
 #include "esp_private/rtc_clk.h"
 #include "soc/syscon_reg.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "hal/uart_ll.h"
 #include "soc/soc_memory_layout.h"
 
@@ -75,6 +77,7 @@ void esp_restart_noos(void)
     // Disable interrupts
     esp_cpu_intr_disable(0xFFFFFFFF);
 
+#if SOC_RTC_WDT_SUPPORTED
     // Enable RTC watchdog for 1 second
     wdt_hal_context_t rtc_wdt_ctx;
     wdt_hal_init(&rtc_wdt_ctx, WDT_RWDT, 0, false);
@@ -85,7 +88,9 @@ void esp_restart_noos(void)
     //Enable flash boot mode so that flash booting after restart is protected by the RTC WDT.
     wdt_hal_set_flashboot_en(&rtc_wdt_ctx, true);
     wdt_hal_write_protect_enable(&rtc_wdt_ctx);
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
+#if SOC_WDT_SUPPORTED
     // Disable TG0/TG1 watchdogs
     wdt_hal_context_t wdt0_context = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
     wdt_hal_write_protect_disable(&wdt0_context);
@@ -96,6 +101,7 @@ void esp_restart_noos(void)
     wdt_hal_write_protect_disable(&wdt1_context);
     wdt_hal_disable(&wdt1_context);
     wdt_hal_write_protect_enable(&wdt1_context);
+#endif /* SOC_WDT_SUPPORTED */
 
 #ifdef CONFIG_FREERTOS_TASK_CREATE_ALLOW_EXT_MEM
     if (esp_ptr_external_ram(esp_cpu_get_sp())) {

components/esp_system/port/soc/esp32s31/clk.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2025-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -29,7 +29,9 @@
 #include "soc/usb_serial_jtag_reg.h"
 #include "soc/hp_alive_sys_reg.h"
 #include "hal/uart_ll.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "esp_private/esp_sleep_internal.h"
 #include "esp_private/periph_ctrl.h"
 #include "esp_private/esp_clk.h"
@@ -63,7 +65,7 @@ __attribute__((weak)) void esp_clk_init(void)
 
     rtc_clk_8m_enable(true);
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // WDT uses a SLOW_CLK clock source. After a function select_rtc_slow_clk a frequency of this source can changed.
     // If the frequency changes from 150kHz to 32kHz, then the timeout set for the WDT will increase 4.6 times.
     // Therefore, for the time of frequency change, set a new lower timeout value (1.6 sec).
@@ -84,7 +86,7 @@ __attribute__((weak)) void esp_clk_init(void)
     select_rtc_slow_clk(SOC_RTC_SLOW_CLK_SRC_RC_SLOW);
 #endif
 
-#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
+#if defined(CONFIG_BOOTLOADER_WDT_ENABLE) && SOC_RTC_WDT_SUPPORTED
     // After changing a frequency WDT timeout needs to be set for new frequency.
     stage_timeout_ticks = (uint32_t)((uint64_t)CONFIG_BOOTLOADER_WDT_TIME_MS * rtc_clk_slow_freq_get_hz() / 1000);
     wdt_hal_write_protect_disable(&rtc_wdt_ctx);

components/esp_system/port/soc/esp32s31/system_internal.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2025-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -15,15 +15,19 @@
 #include "riscv/rv_utils.h"
 #include "esp_rom_serial_output.h"
 #include "soc/gpio_reg.h"
+#include "soc/soc_caps.h"
 #include "esp_cpu.h"
 #include "soc/rtc.h"
 #include "esp_private/rtc_clk.h"
 #include "soc/rtc_periph.h"
 #include "soc/uart_reg.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "esp_private/cache_err_int.h"
 #include "hal/uart_ll.h"
 #include "esp32s31/rom/cache.h"
+#include "esp32s31/rom/ets_sys.h"
 #include "esp32s31/rom/rtc.h"
 #include "soc/hp_sys_clkrst_reg.h"
 #include "soc/lp_clkrst_reg.h"
@@ -49,6 +53,7 @@ void esp_restart_noos(void)
 {
     // Disable interrupts
     rv_utils_intr_global_disable();
+#if SOC_RTC_WDT_SUPPORTED
     // Enable RTC watchdog for 1 second
     wdt_hal_context_t rtc_wdt_ctx;
     wdt_hal_init(&rtc_wdt_ctx, WDT_RWDT, 0, false);
@@ -60,6 +65,7 @@ void esp_restart_noos(void)
     //Enable flash boot mode so that flash booting after restart is protected by the RTC WDT.
     wdt_hal_set_flashboot_en(&rtc_wdt_ctx, true);
     wdt_hal_write_protect_enable(&rtc_wdt_ctx);
+#endif /* SOC_RTC_WDT_SUPPORTED */
 
     const uint32_t core_id = esp_cpu_get_core_id();
 #if !CONFIG_ESP_SYSTEM_SINGLE_CORE_MODE
@@ -68,6 +74,7 @@ void esp_restart_noos(void)
     esp_cpu_stall(other_core_id);
 #endif
 
+#if SOC_WDT_SUPPORTED
     // Disable TG0/TG1 watchdogs
     wdt_hal_context_t wdt0_context = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
     wdt_hal_write_protect_disable(&wdt0_context);
@@ -78,6 +85,7 @@ void esp_restart_noos(void)
     wdt_hal_write_protect_disable(&wdt1_context);
     wdt_hal_disable(&wdt1_context);
     wdt_hal_write_protect_enable(&wdt1_context);
+#endif /* SOC_WDT_SUPPORTED */
 
     // Disable cache
 #if CONFIG_SPIRAM

components/esp_system/startup_funcs.c

@@ -19,7 +19,9 @@
 #include "esp_private/startup_internal.h"
 #include "freertos/FreeRTOS.h"
 #include "soc/soc_caps.h"
+#if SOC_WDT_SUPPORTED || SOC_RTC_WDT_SUPPORTED
 #include "hal/wdt_hal.h"
+#endif
 #include "hal/uart_types.h"
 #include "hal/uart_ll.h"
 
@@ -134,7 +136,7 @@ ESP_SYSTEM_INIT_FN(init_bootloader_offset, SECONDARY, BIT(0), 205)
 }
 #endif // SOC_RECOVERY_BOOTLOADER_SUPPORTED
 
-#ifndef CONFIG_BOOTLOADER_WDT_DISABLE_IN_USER_CODE
+#if SOC_RTC_WDT_SUPPORTED && !defined(CONFIG_BOOTLOADER_WDT_DISABLE_IN_USER_CODE)
 ESP_SYSTEM_INIT_FN(init_disable_rtc_wdt, SECONDARY, BIT(0), 999)
 {
     wdt_hal_context_t rtc_wdt_ctx = RWDT_HAL_CONTEXT_DEFAULT();
@@ -143,4 +145,4 @@ ESP_SYSTEM_INIT_FN(init_disable_rtc_wdt, SECONDARY, BIT(0), 999)
     wdt_hal_write_protect_enable(&rtc_wdt_ctx);
     return ESP_OK;
 }
-#endif // CONFIG_BOOTLOADER_WDT_DISABLE_IN_USER_CODE
+#endif // SOC_RTC_WDT_SUPPORTED && !CONFIG_BOOTLOADER_WDT_DISABLE_IN_USER_CODE

components/soc/esp32/include/soc/Kconfig.soc_caps.in

@@ -167,6 +167,10 @@ config SOC_WDT_SUPPORTED
     bool
     default y
 
+config SOC_RTC_WDT_SUPPORTED
+    bool
+    default y
+
 config SOC_SPI_FLASH_SUPPORTED
     bool
     default y

components/soc/esp32/include/soc/soc_caps.h

@@ -107,6 +107,7 @@
 #define SOC_CLK_TREE_SUPPORTED      1
 #define SOC_MPU_SUPPORTED           1
 #define SOC_WDT_SUPPORTED           1
+#define SOC_RTC_WDT_SUPPORTED       1
 #define SOC_SPI_FLASH_SUPPORTED     1
 #define SOC_RNG_SUPPORTED           1
 #define SOC_LIGHT_SLEEP_SUPPORTED   1

components/soc/esp32c2/include/soc/Kconfig.soc_caps.in

@@ -115,6 +115,10 @@ config SOC_WDT_SUPPORTED
     bool
     default y
 
+config SOC_RTC_WDT_SUPPORTED
+    bool
+    default y
+
 config SOC_SPI_FLASH_SUPPORTED
     bool
     default y

components/soc/esp32c2/include/soc/soc_caps.h

@@ -51,6 +51,7 @@
 #define SOC_CLK_TREE_SUPPORTED          1
 #define SOC_ASSIST_DEBUG_SUPPORTED      1
 #define SOC_WDT_SUPPORTED               1
+#define SOC_RTC_WDT_SUPPORTED           1
 #define SOC_SPI_FLASH_SUPPORTED         1
 #define SOC_RNG_SUPPORTED               1
 #define SOC_LIGHT_SLEEP_SUPPORTED       1

components/soc/esp32c3/include/soc/Kconfig.soc_caps.in

@@ -171,6 +171,10 @@ config SOC_WDT_SUPPORTED
     bool
     default y
 
+config SOC_RTC_WDT_SUPPORTED
+    bool
+    default y
+
 config SOC_SPI_FLASH_SUPPORTED
     bool
     default y

components/soc/esp32c3/include/soc/soc_caps.h

@@ -68,6 +68,7 @@
 #define SOC_CLK_TREE_SUPPORTED          1
 #define SOC_ASSIST_DEBUG_SUPPORTED      1
 #define SOC_WDT_SUPPORTED               1
+#define SOC_RTC_WDT_SUPPORTED           1
 #define SOC_SPI_FLASH_SUPPORTED         1
 #define SOC_RNG_SUPPORTED               1
 #define SOC_LIGHT_SLEEP_SUPPORTED       1

components/soc/esp32c5/include/soc/Kconfig.soc_caps.in

@@ -235,6 +235,10 @@ config SOC_WDT_SUPPORTED
     bool
     default y
 
+config SOC_RTC_WDT_SUPPORTED
+    bool
+    default y
+
 config SOC_SDIO_SLAVE_SUPPORTED
     bool
     default y

components/soc/esp32c5/include/soc/soc_caps.h

@@ -81,6 +81,7 @@
 #define SOC_CLK_TREE_SUPPORTED          1
 #define SOC_ASSIST_DEBUG_SUPPORTED      1
 #define SOC_WDT_SUPPORTED               1
+#define SOC_RTC_WDT_SUPPORTED           1
 #define SOC_SDIO_SLAVE_SUPPORTED        1
 #define SOC_SPI_FLASH_SUPPORTED         1
 #define SOC_ECDSA_SUPPORTED             1

components/soc/esp32c6/include/soc/Kconfig.soc_caps.in

@@ -227,6 +227,10 @@ config SOC_WDT_SUPPORTED
     bool
     default y
 
+config SOC_RTC_WDT_SUPPORTED
+    bool
+    default y
+
 config SOC_SPI_FLASH_SUPPORTED
     bool
     default y

components/soc/esp32c6/include/soc/soc_caps.h

@@ -79,6 +79,7 @@
 #define SOC_CLK_TREE_SUPPORTED          1
 #define SOC_ASSIST_DEBUG_SUPPORTED      1
 #define SOC_WDT_SUPPORTED               1
+#define SOC_RTC_WDT_SUPPORTED           1
 #define SOC_SPI_FLASH_SUPPORTED         1
 #define SOC_RNG_SUPPORTED               1
 #define SOC_LIGHT_SLEEP_SUPPORTED       1

components/soc/esp32c61/include/soc/Kconfig.soc_caps.in

@@ -143,6 +143,10 @@ config SOC_WDT_SUPPORTED
     bool
     default y
 
+config SOC_RTC_WDT_SUPPORTED
+    bool
+    default y
+
 config SOC_SPI_FLASH_SUPPORTED
     bool
     default y

components/soc/esp32c61/include/soc/soc_caps.h

@@ -59,6 +59,7 @@
 #define SOC_CLK_TREE_SUPPORTED          1
 #define SOC_ASSIST_DEBUG_SUPPORTED      1
 #define SOC_WDT_SUPPORTED               1
+#define SOC_RTC_WDT_SUPPORTED           1
 #define SOC_SPI_FLASH_SUPPORTED         1
 #define SOC_MODEM_CLOCK_SUPPORTED       1
 #define SOC_REG_I2C_SUPPORTED           1

components/soc/esp32h2/include/soc/Kconfig.soc_caps.in

@@ -223,6 +223,10 @@ config SOC_WDT_SUPPORTED
     bool
     default y
 
+config SOC_RTC_WDT_SUPPORTED
+    bool
+    default y
+
 config SOC_SPI_FLASH_SUPPORTED
     bool
     default y

components/soc/esp32h2/include/soc/soc_caps.h

@@ -94,6 +94,7 @@
 #define SOC_CLK_TREE_SUPPORTED          1
 #define SOC_ASSIST_DEBUG_SUPPORTED      1
 #define SOC_WDT_SUPPORTED               1
+#define SOC_RTC_WDT_SUPPORTED           1
 #define SOC_SPI_FLASH_SUPPORTED         1
 #define SOC_RNG_SUPPORTED               1
 #define SOC_LIGHT_SLEEP_SUPPORTED       1

components/soc/esp32h21/include/soc/Kconfig.soc_caps.in

@@ -135,6 +135,10 @@ config SOC_WDT_SUPPORTED
     bool
     default y
 
+config SOC_RTC_WDT_SUPPORTED
+    bool
+    default y
+
 config SOC_SPI_FLASH_SUPPORTED
     bool
     default y

components/soc/esp32h21/include/soc/soc_caps.h

@@ -67,6 +67,7 @@
 #define SOC_CLK_TREE_SUPPORTED          1
 #define SOC_ASSIST_DEBUG_SUPPORTED      1
 #define SOC_WDT_SUPPORTED               1
+#define SOC_RTC_WDT_SUPPORTED           1
 #define SOC_SPI_FLASH_SUPPORTED         1       //TODO: [ESP32H21] IDF-11526
 // #define SOC_RNG_SUPPORTED               1    //TODO: [ESP32H21] IDF-11503
 #define SOC_MODEM_CLOCK_SUPPORTED       1

components/soc/esp32h4/include/soc/Kconfig.soc_caps.in

@@ -167,6 +167,10 @@ config SOC_WDT_SUPPORTED
     bool
     default y
 
+config SOC_RTC_WDT_SUPPORTED
+    bool
+    default y
+
 config SOC_SPI_FLASH_SUPPORTED
     bool
     default y

components/soc/esp32h4/include/soc/soc_caps.h

@@ -85,6 +85,7 @@
 #define SOC_CLK_TREE_SUPPORTED          1
 #define SOC_ASSIST_DEBUG_SUPPORTED      1
 #define SOC_WDT_SUPPORTED               1
+#define SOC_RTC_WDT_SUPPORTED           1
 #define SOC_SPI_FLASH_SUPPORTED         1
 #define SOC_SPIRAM_SUPPORTED            1
 #define SOC_LIGHT_SLEEP_SUPPORTED       1

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

@@ -335,6 +335,10 @@ config SOC_WDT_SUPPORTED
     bool
     default y
 
+config SOC_RTC_WDT_SUPPORTED
+    bool
+    default y
+
 config SOC_SPI_FLASH_SUPPORTED
     bool
     default y

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

@@ -106,6 +106,7 @@
 #define SOC_ASSIST_DEBUG_SUPPORTED      1
 #define SOC_DEBUG_PROBE_SUPPORTED       1
 #define SOC_WDT_SUPPORTED               1
+#define SOC_RTC_WDT_SUPPORTED           1
 #define SOC_SPI_FLASH_SUPPORTED         1
 #define SOC_TOUCH_SENSOR_SUPPORTED      1
 #define SOC_RNG_SUPPORTED               1

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

@@ -203,6 +203,10 @@ config SOC_WDT_SUPPORTED
     bool
     default y
 
+config SOC_RTC_WDT_SUPPORTED
+    bool
+    default y
+
 config SOC_SPI_FLASH_SUPPORTED
     bool
     default y

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

@@ -93,6 +93,7 @@
 #define SOC_CLK_TREE_SUPPORTED          1
 #define SOC_MPU_SUPPORTED               1
 #define SOC_WDT_SUPPORTED               1
+#define SOC_RTC_WDT_SUPPORTED           1
 #define SOC_SPI_FLASH_SUPPORTED         1
 #define SOC_RNG_SUPPORTED               1
 #define SOC_LIGHT_SLEEP_SUPPORTED       1

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

@@ -235,6 +235,10 @@ config SOC_WDT_SUPPORTED
     bool
     default y
 
+config SOC_RTC_WDT_SUPPORTED
+    bool
+    default y
+
 config SOC_SPI_FLASH_SUPPORTED
     bool
     default y

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

@@ -86,6 +86,7 @@
 #define SOC_CLK_TREE_SUPPORTED          1
 #define SOC_MPU_SUPPORTED               1
 #define SOC_WDT_SUPPORTED               1
+#define SOC_RTC_WDT_SUPPORTED           1
 #define SOC_SPI_FLASH_SUPPORTED         1
 #define SOC_RNG_SUPPORTED               1
 #define SOC_LIGHT_SLEEP_SUPPORTED       1

components/soc/esp32s31/include/soc/Kconfig.soc_caps.in

@@ -75,6 +75,10 @@ config SOC_WDT_SUPPORTED
     bool
     default y
 
+config SOC_RTC_WDT_SUPPORTED
+    bool
+    default y
+
 config SOC_SPI_FLASH_SUPPORTED
     bool
     default y

components/soc/esp32s31/include/soc/soc_caps.h

@@ -87,6 +87,7 @@
 // #define SOC_ASSIST_DEBUG_SUPPORTED      1      // TODO: [ESP32S31] IDF-14675
 // #define SOC_DEBUG_PROBE_SUPPORTED       1      // TODO: [ESP32S31] IDF-14798
 #define SOC_WDT_SUPPORTED               1
+#define SOC_RTC_WDT_SUPPORTED           1
 #define SOC_SPI_FLASH_SUPPORTED         1         // TODO: [ESP32S31] IDF-14777
 // #define SOC_TOUCH_SENSOR_SUPPORTED      1      // TODO: [ESP32S31] IDF-14796
 // #define SOC_RNG_SUPPORTED               1      // TODO: [ESP32S31] IDF-14632