diff --git a/arch/arm/boot/dts/r7s72100.dtsi b/arch/arm/boot/dts/r7s72100.dtsi
index 614ba79a9774..9b12d73e67dc 100644
--- a/arch/arm/boot/dts/r7s72100.dtsi
+++ b/arch/arm/boot/dts/r7s72100.dtsi
@@ -371,6 +371,13 @@ gic: interrupt-controller@e8201000 {
 			<0xe8202000 0x1000>;
 	};
 
+	wdt: watchdog@fcfe0000 {
+		compatible = "renesas,r7s72100-wdt", "renesas,rza-wdt";
+		reg = <0xfcfe0000 0x6>;
+		interrupts = <GIC_SPI 106 IRQ_TYPE_EDGE_RISING>;
+		clocks = <&p0_clk>;
+	};
+
 	i2c0: i2c@fcfee000 {
 		#address-cells = <1>;
 		#size-cells = <0>;