diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index ed24daeadb938f08b7220c88a0ba49e457173869..d783d164b9c3015e74d1f05e35ca7fe755312077 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -520,6 +520,7 @@
 			#size-cells = <0>;
 
 			mdio: mdio {
+				compatible = "snps,dwmac-mdio";
 				#address-cells = <1>;
 				#size-cells = <0>;
 			};