diff --git a/arch/arm/boot/dts/stm32429i-eval.dts b/arch/arm/boot/dts/stm32429i-eval.dts
index a6a300b5799a986d725b57b190746f5fed5c4596..2e78e4e4adddd62f3bf7647b435f31480fc07a7c 100644
--- a/arch/arm/boot/dts/stm32429i-eval.dts
+++ b/arch/arm/boot/dts/stm32429i-eval.dts
@@ -157,6 +157,11 @@
 	status = "okay";
 };
 
+&iwdg {
+	status = "okay";
+	timeout-sec = <32>;
+};
+
 &ltdc {
 	status = "okay";
 	pinctrl-0 = <&ltdc_pins>;