[core] Raise WDT_FEED_INTERVAL_MS to 2000ms on BK72xx (#15943)

esphome/core/application.h

@@ -216,11 +216,19 @@ class Application {
   /// loops and scheduler items still feed after every op, so any op exceeding
   /// this threshold triggers a real feed naturally.
   /// Safety margins vs. platform watchdog timeouts:
-  ///   - ESP32 task WDT default (5 s): ~16x
-  ///   - ESP8266 soft WDT (~1.6 s):    ~5x  <-- floor case; any future change
-  ///                                             must keep comfortable margin here
-  ///   - ESP8266 HW WDT (~6 s):        ~20x
+  ///   - ESP32 task WDT default (5 s):  ~16x
+  ///   - ESP8266 soft WDT (~1.6 s):     ~5x  <-- floor case; any future change
+  ///                                              must keep comfortable margin here
+  ///   - ESP8266 HW WDT (~6 s):         ~20x
+  ///   - BK72xx HW WDT (10 s):          ~5x  <-- platform override below
+#ifdef USE_BK72XX
+  // BDK busy-waits 200us per WDT reload (sctrl_dpll_delay200us). LibreTiny
+  // sets HW WDT to 10s; 2000ms keeps ~5x margin. See wdt_ctrl WCMD_RELOAD_PERIOD:
+  // https://github.com/libretiny-eu/framework-beken-bdk/blob/44800e7451ea30fbcbd3bb6e905315de59349fee/beken378/driver/wdt/wdt.c#L75-L87
+  static constexpr uint32_t WDT_FEED_INTERVAL_MS = 2000;
+#else
   static constexpr uint32_t WDT_FEED_INTERVAL_MS = 300;
+#endif
 
   /// Feed the task watchdog. Cold entry — callers without a millis()
   /// timestamp in hand. Out of line to keep call sites tiny.