diff --git a/arch/arm64/boot/dts/renesas/r8a7796.dtsi b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
index a339047acdc7..c5192d513d7d 100644
--- a/arch/arm64/boot/dts/renesas/r8a7796.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
@@ -1403,6 +1403,19 @@
 			status = "disabled";
 		};
 
+		usb3_phy0: usb-phy@e65ee000 {
+			compatible = "renesas,r8a7796-usb3-phy",
+				     "renesas,rcar-gen3-usb3-phy";
+			reg = <0 0xe65ee000 0 0x90>;
+			clocks = <&cpg CPG_MOD 328>, <&usb3s0_clk>,
+				 <&usb_extal_clk>;
+			clock-names = "usb3-if", "usb3s_clk", "usb_extal";
+			power-domains = <&sysc R8A7796_PD_ALWAYS_ON>;
+			resets = <&cpg 328>;
+			#phy-cells = <0>;
+			status = "disabled";
+		};
+
 		xhci0: usb@ee000000 {
 			compatible = "renesas,xhci-r8a7796",
 				     "renesas,rcar-gen3-xhci";
@@ -2021,4 +2034,17 @@
 			};
 		};
 	};
+
+	/* External USB clocks - can be overridden by the board */
+	usb3s0_clk: usb3s0 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <0>;
+	};
+
+	usb_extal_clk: usb_extal {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <0>;
+	};
 };