diff --git a/target/linux/realtek/dts/rtl838x.dtsi b/target/linux/realtek/dts/rtl838x.dtsi
index 8f44de8bdc..035ff029c9 100644
--- a/target/linux/realtek/dts/rtl838x.dtsi
+++ b/target/linux/realtek/dts/rtl838x.dtsi
@@ -16,6 +16,14 @@
 		phy-is-integrated; \
 	};
 
+#define INTERNAL_PHY_SDS(n, s) \
+	phy##n: ethernet-phy@##n { \
+		reg = <##n>; \
+		compatible = "ethernet-phy-ieee802.3-c22"; \
+		phy-is-integrated; \
+		sds = <##s>; \
+	};
+
 #define EXTERNAL_PHY(n) \
 	phy##n: ethernet-phy@##n { \
 		reg = <##n>; \
diff --git a/target/linux/realtek/dts/rtl839x.dtsi b/target/linux/realtek/dts/rtl839x.dtsi
index 98c69a5d34..29458269fa 100644
--- a/target/linux/realtek/dts/rtl839x.dtsi
+++ b/target/linux/realtek/dts/rtl839x.dtsi
@@ -15,6 +15,14 @@
 		phy-is-integrated; \
 	};
 
+#define INTERNAL_PHY_SDS(n, s) \
+	phy##n: ethernet-phy@##n { \
+		reg = <##n>; \
+		compatible = "ethernet-phy-ieee802.3-c22"; \
+		phy-is-integrated; \
+		sds = <##s>; \
+	};
+
 #define EXTERNAL_PHY(n) \
 	phy##n: ethernet-phy@##n { \
 		reg = <##n>; \
diff --git a/target/linux/realtek/dts/rtl930x.dtsi b/target/linux/realtek/dts/rtl930x.dtsi
index 34d1ede54c..947f0d9be5 100644
--- a/target/linux/realtek/dts/rtl930x.dtsi
+++ b/target/linux/realtek/dts/rtl930x.dtsi
@@ -2,6 +2,14 @@
 
 /dts-v1/;
 
+#define INTERNAL_PHY_SDS(n, s) \
+	phy##n: ethernet-phy@##n { \
+		reg = <##n>; \
+		compatible = "ethernet-phy-ieee802.3-c22"; \
+		phy-is-integrated; \
+		sds = <##s>; \
+	};
+
 / {
 	#address-cells = <1>;
 	#size-cells = <1>;
diff --git a/target/linux/realtek/dts/rtl931x.dtsi b/target/linux/realtek/dts/rtl931x.dtsi
index 7ecfd2a0c6..c7feef4724 100644
--- a/target/linux/realtek/dts/rtl931x.dtsi
+++ b/target/linux/realtek/dts/rtl931x.dtsi
@@ -2,6 +2,16 @@
 
 #include <dt-bindings/interrupt-controller/mips-gic.h>
 
+/dts-v1/;
+
+#define INTERNAL_PHY_SDS(n, s) \
+	phy##n: ethernet-phy@##n { \
+		reg = <##n>; \
+		compatible = "ethernet-phy-ieee802.3-c22"; \
+		phy-is-integrated; \
+		sds = <##s>; \
+	};
+
 / {
 	#address-cells = <1>;
 	#size-cells = <1>;