diff --git a/arch/arm64/boot/dts/renesas/r8a77951.dtsi b/arch/arm64/boot/dts/renesas/r8a77951.dtsi
index 4e87e8776a2b..742834fa7097 100644
--- a/arch/arm64/boot/dts/renesas/r8a77951.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77951.dtsi
@@ -369,6 +369,7 @@ soc: soc {
 		rwdt: watchdog@e6020000 {
 			compatible = "renesas,r8a7795-wdt", "renesas,rcar-gen3-wdt";
 			reg = <0 0xe6020000 0 0x0c>;
+			interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&cpg CPG_MOD 402>;
 			power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
 			resets = <&cpg 402>;
diff --git a/arch/arm64/boot/dts/renesas/r8a77960.dtsi b/arch/arm64/boot/dts/renesas/r8a77960.dtsi
index 6f79da8cc8c0..0f2635af7b58 100644
--- a/arch/arm64/boot/dts/renesas/r8a77960.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77960.dtsi
@@ -334,6 +334,7 @@ rwdt: watchdog@e6020000 {
 			compatible = "renesas,r8a7796-wdt",
 				     "renesas,rcar-gen3-wdt";
 			reg = <0 0xe6020000 0 0x0c>;
+			interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&cpg CPG_MOD 402>;
 			power-domains = <&sysc R8A7796_PD_ALWAYS_ON>;
 			resets = <&cpg 402>;
diff --git a/arch/arm64/boot/dts/renesas/r8a77961.dtsi b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
index 68cbbb322acf..a2d9959799e8 100644
--- a/arch/arm64/boot/dts/renesas/r8a77961.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
@@ -323,6 +323,7 @@ rwdt: watchdog@e6020000 {
 			compatible = "renesas,r8a77961-wdt",
 				     "renesas,rcar-gen3-wdt";
 			reg = <0 0xe6020000 0 0x0c>;
+			interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&cpg CPG_MOD 402>;
 			power-domains = <&sysc R8A77961_PD_ALWAYS_ON>;
 			resets = <&cpg 402>;
diff --git a/arch/arm64/boot/dts/renesas/r8a77965.dtsi b/arch/arm64/boot/dts/renesas/r8a77965.dtsi
index 9f858af8b762..bba07944228b 100644
--- a/arch/arm64/boot/dts/renesas/r8a77965.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77965.dtsi
@@ -205,6 +205,7 @@ rwdt: watchdog@e6020000 {
 			compatible = "renesas,r8a77965-wdt",
 				     "renesas,rcar-gen3-wdt";
 			reg = <0 0xe6020000 0 0x0c>;
+			interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&cpg CPG_MOD 402>;
 			power-domains = <&sysc R8A77965_PD_ALWAYS_ON>;
 			resets = <&cpg 402>;
diff --git a/arch/arm64/boot/dts/renesas/r8a77970.dtsi b/arch/arm64/boot/dts/renesas/r8a77970.dtsi
index 517892cf6294..79718234d85f 100644
--- a/arch/arm64/boot/dts/renesas/r8a77970.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77970.dtsi
@@ -108,6 +108,7 @@ rwdt: watchdog@e6020000 {
 			compatible = "renesas,r8a77970-wdt",
 				     "renesas,rcar-gen3-wdt";
 			reg = <0 0xe6020000 0 0x0c>;
+			interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&cpg CPG_MOD 402>;
 			power-domains = <&sysc R8A77970_PD_ALWAYS_ON>;
 			resets = <&cpg 402>;
diff --git a/arch/arm64/boot/dts/renesas/r8a77980.dtsi b/arch/arm64/boot/dts/renesas/r8a77980.dtsi
index 347c068ff2c5..148983130adf 100644
--- a/arch/arm64/boot/dts/renesas/r8a77980.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77980.dtsi
@@ -138,6 +138,7 @@ rwdt: watchdog@e6020000 {
 			compatible = "renesas,r8a77980-wdt",
 				     "renesas,rcar-gen3-wdt";
 			reg = <0 0xe6020000 0 0x0c>;
+			interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&cpg CPG_MOD 402>;
 			power-domains = <&sysc R8A77980_PD_ALWAYS_ON>;
 			resets = <&cpg 402>;
diff --git a/arch/arm64/boot/dts/renesas/r8a77990.dtsi b/arch/arm64/boot/dts/renesas/r8a77990.dtsi
index 7e0f1aab2135..af61c67b093d 100644
--- a/arch/arm64/boot/dts/renesas/r8a77990.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77990.dtsi
@@ -171,6 +171,7 @@ rwdt: watchdog@e6020000 {
 			compatible = "renesas,r8a77990-wdt",
 				     "renesas,rcar-gen3-wdt";
 			reg = <0 0xe6020000 0 0x0c>;
+			interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&cpg CPG_MOD 402>;
 			power-domains = <&sysc R8A77990_PD_ALWAYS_ON>;
 			resets = <&cpg 402>;
diff --git a/arch/arm64/boot/dts/renesas/r8a77995.dtsi b/arch/arm64/boot/dts/renesas/r8a77995.dtsi
index cac1f9467ffa..00254cf0aa92 100644
--- a/arch/arm64/boot/dts/renesas/r8a77995.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77995.dtsi
@@ -94,6 +94,7 @@ rwdt: watchdog@e6020000 {
 			compatible = "renesas,r8a77995-wdt",
 				     "renesas,rcar-gen3-wdt";
 			reg = <0 0xe6020000 0 0x0c>;
+			interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&cpg CPG_MOD 402>;
 			power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
 			resets = <&cpg 402>;
