diff --git a/arch/arm/boot/dts/bcm53573.dtsi b/arch/arm/boot/dts/bcm53573.dtsi
index 85a23dc52423..eed1a6147f0b 100644
--- a/arch/arm/boot/dts/bcm53573.dtsi
+++ b/arch/arm/boot/dts/bcm53573.dtsi
@@ -181,6 +181,24 @@
 
 		gmac0: ethernet@5000 {
 			reg = <0x5000 0x1000>;
+
+			mdio {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				switch: switch@1e {
+					compatible = "brcm,bcm53125";
+					reg = <0x1e>;
+
+					status = "disabled";
+
+					/* ports are defined in board DTS */
+					ports {
+						#address-cells = <1>;
+						#size-cells = <0>;
+					};
+				};
+			};
 		};
 
 		gmac1: ethernet@b000 {