diff --git a/arch/arm/dts/stm32mp23-u-boot.dtsi b/arch/arm/dts/stm32mp23-u-boot.dtsi
index 872a8739c54..5a9436dd193 100644
--- a/arch/arm/dts/stm32mp23-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp23-u-boot.dtsi
@@ -37,6 +37,11 @@
 	soc@0 {
 		bootph-all;
 	};
+
+	/* temporary until kernel DT update */
+	watchdog {
+		arm,smc-id = <0xbc000000>;
+	};
 };
 
 &bsec {