diff --git a/arch/arm/boot/dts/vf610-zii-dev-rev-b.dts b/arch/arm/boot/dts/vf610-zii-dev-rev-b.dts
index 80698e98dafe1..1f9686c33a845 100644
--- a/arch/arm/boot/dts/vf610-zii-dev-rev-b.dts
+++ b/arch/arm/boot/dts/vf610-zii-dev-rev-b.dts
@@ -211,12 +211,14 @@
 						reg = <0>;
 						label = "lan6";
 						phy-handle = <&switch2phy0>;
+						phy-mode = "sgmii";
 					};
 
 					port@1 {
 						reg = <1>;
 						label = "lan7";
 						phy-handle = <&switch2phy1>;
+						phy-mode = "sgmii";
 					};
 
 					port@2 {