diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-gb200nvl-bmc.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-gb200nvl-bmc.dts
index dd2a02a6d1d4..72dafebc080d 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-gb200nvl-bmc.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-gb200nvl-bmc.dts
@@ -227,6 +227,30 @@ &uart_routing {
 	status = "okay";
 };
 
+&mdio0 {
+	status = "okay";
+	ethphy0: ethernet-phy@0 {
+		compatible = "ethernet-phy-ieee802.3-c22";
+		reg = <0>;
+	};
+};
+
+&mdio3 {
+	status = "okay";
+	ethphy3: ethernet-phy@2 {
+		compatible = "ethernet-phy-ieee802.3-c22";
+		reg = <2>;
+	};
+};
+
+&mac0 {
+	status = "okay";
+	pinctrl-names = "default";
+	phy-mode = "rgmii-id";
+	phy-handle = <&ethphy3>;
+	pinctrl-0 = <&pinctrl_rgmii1_default>;
+};
+
 &mac2 {
 	status = "okay";
 	phy-mode = "rmii";