diff --git a/arch/arm64/boot/dts/renesas/r8a779f0.dtsi b/arch/arm64/boot/dts/renesas/r8a779f0.dtsi
index 76a0f85a50f9..0ebf8e5dd2f9 100644
--- a/arch/arm64/boot/dts/renesas/r8a779f0.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779f0.dtsi
@@ -315,6 +315,16 @@ rwdt: watchdog@e6020000 {
 			status = "disabled";
 		};
 
+		swdt: watchdog@e6030000 {
+			compatible = "renesas,r8a779f0-wdt", "renesas,rcar-gen4-wdt";
+			reg = <0 0xe6030000 0 0x0c>;
+			interrupts = <GIC_SPI 516 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_CORE R8A779F0_CLK_OSC>;
+			power-domains = <&sysc R8A779F0_PD_ALWAYS_ON>;
+			resets = <&cpg 1128>;
+			status = "disabled";
+		};
+
 		pfc: pinctrl@e6050000 {
 			compatible = "renesas,pfc-r8a779f0";
 			reg = <0 0xe6050000 0 0x16c>, <0 0xe6050800 0 0x16c>,