diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
index c72da8c..41a057e 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
@@ -128,6 +128,16 @@
 				pins = "PH0", "PH1";
 				function = "uart0";
 			};
+
+			uart2_pins: uart2 {
+				pins = "PD19", "PD20";
+				function = "uart2";
+			};
+
+			uart3_pins: uart3 {
+				pins = "PD23", "PD24", "PD25", "PD26";
+				function = "uart3";
+			};
 		};
 
 		uart0: serial@5000000 {
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi
index b2526da..f31e14d 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi
@@ -197,6 +201,18 @@
 	status = "okay";
 };
 
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart2_pins>;
+	status = "disabled";
+};
+
+&uart3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart3_pins>;
+	status = "disabled";
+};
+
 &usb2otg {
 	dr_mode = "otg";
 	status = "okay";