From 911bd547651ff4f9919b9f03edf232f8bb1034d6 Mon Sep 17 00:00:00 2001
From: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
Date: Wed, 23 Apr 2025 20:49:33 +1200
Subject: [PATCH] [watchdog] Fix for variants with single core (#8602)

---
 esphome/components/watchdog/watchdog.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/esphome/components/watchdog/watchdog.cpp b/esphome/components/watchdog/watchdog.cpp
index 3a94a658e8..f6f2992a11 100644
--- a/esphome/components/watchdog/watchdog.cpp
+++ b/esphome/components/watchdog/watchdog.cpp
@@ -6,6 +6,7 @@
 #include <cinttypes>
 #include <cstdint>
 #ifdef USE_ESP32
+#include <soc/soc_caps.h>
 #include "esp_idf_version.h"
 #include "esp_task_wdt.h"
 #endif
@@ -40,7 +41,7 @@ void WatchdogManager::set_timeout_(uint32_t timeout_ms) {
 #if ESP_IDF_VERSION_MAJOR >= 5
   esp_task_wdt_config_t wdt_config = {
       .timeout_ms = timeout_ms,
-      .idle_core_mask = 0x03,
+      .idle_core_mask = (1 << SOC_CPU_CORES_NUM) - 1,
       .trigger_panic = true,
   };
   esp_task_wdt_reconfigure(&wdt_config);