diff --git a/arch/arm/boot/dts/bcm5301x.dtsi b/arch/arm/boot/dts/bcm5301x.dtsi
index ffcbe49c8f390115165a131361c4c5e192f4c2e1..98647d22b291f100399290adf1d2ed67b31fe0e7 100644
--- a/arch/arm/boot/dts/bcm5301x.dtsi
+++ b/arch/arm/boot/dts/bcm5301x.dtsi
@@ -320,6 +320,14 @@ gmac3: ethernet@27000 {
 		};
 	};
 
+	mdio: mdio@18003000 {
+		compatible = "brcm,iproc-mdio";
+		reg = <0x18003000 0x8>;
+		#size-cells = <1>;
+		#address-cells = <0>;
+		status = "disabled";
+	};
+
 	i2c0: i2c@18009000 {
 		compatible = "brcm,iproc-i2c";
 		reg = <0x18009000 0x50>;