diff --git a/arch/arm/boot/dts/r8a7742-iwg21d-q7.dts b/arch/arm/boot/dts/r8a7742-iwg21d-q7.dts
index c57a5710574a..f23c2ba65c92 100644
--- a/arch/arm/boot/dts/r8a7742-iwg21d-q7.dts
+++ b/arch/arm/boot/dts/r8a7742-iwg21d-q7.dts
@@ -90,6 +90,11 @@ sdhi2_pins_uhs: sd2_uhs {
 	};
 };
 
+&rwdt {
+	timeout-sec = <60>;
+	status = "okay";
+};
+
 &scifa2 {
 	pinctrl-0 = <&scifa2_pins>;
 	pinctrl-names = "default";