diff --git a/package/boot/uboot-envtools/files/realtek b/package/boot/uboot-envtools/files/realtek
index af48d270785..93cccfdc3e9 100644
--- a/package/boot/uboot-envtools/files/realtek
+++ b/package/boot/uboot-envtools/files/realtek
@@ -9,6 +9,7 @@ board=$(board_name)
 
 case "$board" in
 d-link,dgs-1210-16|\
+d-link,dgs-1210-20|\
 d-link,dgs-1210-28|\
 d-link,dgs-1210-10p|\
 zyxel,gs1900-8|\
diff --git a/target/linux/realtek/dts-5.10/rtl8382_d-link_dgs-1210-20.dts b/target/linux/realtek/dts-5.10/rtl8382_d-link_dgs-1210-20.dts
new file mode 100644
index 00000000000..cd495bc343d
--- /dev/null
+++ b/target/linux/realtek/dts-5.10/rtl8382_d-link_dgs-1210-20.dts
@@ -0,0 +1,104 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "rtl8382_d-link_dgs-1210.dtsi"
+
+/ {
+	compatible = "d-link,dgs-1210-20", "realtek,rtl838x-soc";
+	model = "D-Link DGS-1210-20";
+
+	gpio-restart {
+		compatible = "gpio-restart";
+		gpios = <&gpio1 34 GPIO_ACTIVE_LOW>;
+		open-source;
+	};
+
+	keys {
+		compatible = "gpio-keys-polled";
+		poll-interval = <20>;
+
+		reset {
+			label = "reset";
+			gpios = <&gpio1 33 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+
+	gpio1: rtl8231-gpio {
+		compatible = "realtek,rtl8231-gpio";
+		#gpio-cells = <2>;
+		gpio-controller;
+		indirect-access-bus-id = <0>;
+	};
+};
+
+&ethernet0 {
+	mdio: mdio-bus {
+		compatible = "realtek,rtl838x-mdio";
+		regmap = <&ethernet0>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		EXTERNAL_PHY(0)
+		EXTERNAL_PHY(1)
+		EXTERNAL_PHY(2)
+		EXTERNAL_PHY(3)
+		EXTERNAL_PHY(4)
+		EXTERNAL_PHY(5)
+		EXTERNAL_PHY(6)
+		EXTERNAL_PHY(7)
+
+		INTERNAL_PHY(8)
+		INTERNAL_PHY(9)
+		INTERNAL_PHY(10)
+		INTERNAL_PHY(11)
+		INTERNAL_PHY(12)
+		INTERNAL_PHY(13)
+		INTERNAL_PHY(14)
+		INTERNAL_PHY(15)
+
+		EXTERNAL_SFP_PHY(24)
+		EXTERNAL_SFP_PHY(25)
+		EXTERNAL_SFP_PHY(26)
+		EXTERNAL_SFP_PHY(27)
+	};
+};
+
+&switch0 {
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		SWITCH_PORT(0, 1, qsgmii)
+		SWITCH_PORT(1, 2, qsgmii)
+		SWITCH_PORT(2, 3, qsgmii)
+		SWITCH_PORT(3, 4, qsgmii)
+		SWITCH_PORT(4, 5, qsgmii)
+		SWITCH_PORT(5, 6, qsgmii)
+		SWITCH_PORT(6, 7, qsgmii)
+		SWITCH_PORT(7, 8, qsgmii)
+
+		SWITCH_PORT(8, 9, internal)
+		SWITCH_PORT(9, 10, internal)
+		SWITCH_PORT(10, 11, internal)
+		SWITCH_PORT(11, 12, internal)
+		SWITCH_PORT(12, 13, internal)
+		SWITCH_PORT(13, 14, internal)
+		SWITCH_PORT(14, 15, internal)
+		SWITCH_PORT(15, 16, internal)
+
+		SWITCH_PORT(24, 17, qsgmii)
+		SWITCH_PORT(25, 18, qsgmii)
+		SWITCH_PORT(26, 19, qsgmii)
+		SWITCH_PORT(27, 20, qsgmii)
+
+		port@28 {
+			ethernet = <&ethernet0>;
+			reg = <28>;
+			phy-mode = "internal";
+			fixed-link {
+				speed = <1000>;
+				full-duplex;
+			};
+		};
+	};
+};
diff --git a/target/linux/realtek/image/rtl838x.mk b/target/linux/realtek/image/rtl838x.mk
index 289e37db163..df145cfb697 100644
--- a/target/linux/realtek/image/rtl838x.mk
+++ b/target/linux/realtek/image/rtl838x.mk
@@ -30,6 +30,12 @@ define Device/d-link_dgs-1210-16
 endef
 TARGET_DEVICES += d-link_dgs-1210-16
 
+define Device/d-link_dgs-1210-20
+  $(Device/d-link_dgs-1210)
+  DEVICE_MODEL := DGS-1210-20
+endef
+TARGET_DEVICES += d-link_dgs-1210-20
+
 define Device/d-link_dgs-1210-28
   $(Device/d-link_dgs-1210)
   DEVICE_MODEL := DGS-1210-28