diff --git a/target/linux/realtek/dts/macros.dtsi b/target/linux/realtek/dts/macros.dtsi
index eeabf0069e..3cfac36730 100644
--- a/target/linux/realtek/dts/macros.dtsi
+++ b/target/linux/realtek/dts/macros.dtsi
@@ -19,6 +19,12 @@
 		compatible = "ethernet-phy-ieee802.3-c22"; \
 	};
 
+#define PHY_C45(p, n) \
+	phy##p: ethernet-phy@n { \
+		reg = <##n>; \
+		compatible = "ethernet-phy-ieee802.3-c45"; \
+	};
+
 #define EXTERNAL_SFP_PHY(n) \
 	phy##n: ethernet-phy@##n { \
 		compatible = "ethernet-phy-ieee802.3-c22"; \
diff --git a/target/linux/realtek/dts/rtl9303_xikestor_sks8300-8t.dts b/target/linux/realtek/dts/rtl9303_xikestor_sks8300-8t.dts
index bb9616816e..e7bde814dc 100644
--- a/target/linux/realtek/dts/rtl9303_xikestor_sks8300-8t.dts
+++ b/target/linux/realtek/dts/rtl9303_xikestor_sks8300-8t.dts
@@ -130,47 +130,17 @@
 };
 
 &mdio_bus0 {
-	phy0: ethernet-phy@0 {
-		compatible = "ethernet-phy-ieee802.3-c45";
-		reg = <0>;
-	};
-
-	phy8: ethernet-phy@1 {
-		compatible = "ethernet-phy-ieee802.3-c45";
-		reg = <1>;
-	};
-
-	phy16: ethernet-phy@2 {
-		compatible = "ethernet-phy-ieee802.3-c45";
-		reg = <2>;
-	};
-
-	phy20: ethernet-phy@3 {
-		compatible = "ethernet-phy-ieee802.3-c45";
-		reg = <3>;
-	};
+	PHY_C45(0, 0)
+	PHY_C45(8, 1)
+	PHY_C45(16, 2)
+	PHY_C45(20, 3)
 };
 
 &mdio_bus1 {
-	phy24: ethernet-phy@0 {
-		compatible = "ethernet-phy-ieee802.3-c45";
-		reg = <0>;
-	};
-
-	phy25: ethernet-phy@1 {
-		compatible = "ethernet-phy-ieee802.3-c45";
-		reg = <1>;
-	};
-
-	phy26: ethernet-phy@2 {
-		compatible = "ethernet-phy-ieee802.3-c45";
-		reg = <2>;
-	};
-
-	phy27: ethernet-phy@3 {
-		compatible = "ethernet-phy-ieee802.3-c45";
-		reg = <3>;
-	};
+	PHY_C45(24, 0)
+	PHY_C45(25, 1)
+	PHY_C45(26, 2)
+	PHY_C45(27, 3)
 };
 
 &ethernet0 {