diff --git a/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts b/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts
index 38cd8c7e92da..7afd6e57fe86 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts
+++ b/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts
@@ -15,6 +15,7 @@ / {
 	compatible = "xunlong,orangepi-4a", "allwinner,sun55i-t527";
 
 	aliases {
+		ethernet0 = &gmac1;
 		serial0 = &uart0;
 	};
 
@@ -95,11 +96,33 @@ &ehci1 {
 	status = "okay";
 };
 
+&gmac1 {
+	phy-mode = "rgmii-id";
+	phy-handle = <&ext_rgmii_phy>;
+	phy-supply = <&reg_cldo4>;
+
+	tx-internal-delay-ps = <0>;
+	rx-internal-delay-ps = <300>;
+
+	status = "okay";
+};
+
 &gpu {
 	mali-supply = <&reg_dcdc2>;
 	status = "okay";
 };
 
+&mdio1 {
+	ext_rgmii_phy: ethernet-phy@1 {
+		compatible = "ethernet-phy-ieee802.3-c22";
+		reg = <1>;
+		interrupts-extended = <&pio 8 16 IRQ_TYPE_LEVEL_LOW>; /* PI16 */
+		reset-gpios = <&pio 8 15 GPIO_ACTIVE_LOW>; /* PI15 */
+		reset-assert-us = <10000>;
+		reset-deassert-us = <150000>;
+	};
+};
+
 &mmc0 {
 	vmmc-supply = <&reg_cldo3>;
 	cd-gpios = <&pio 5 6 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>; /* PF6 */