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 {
@@ -768,6 +893,11 @@
 				pins = "PL0", "PL1";
 				function = "s_i2c";
 			};
+
+			r_uart_pins: r-uart {
+				pins = "PL2", "PL3";
+				function = "s_uart";
+			};
 		};
 
 		r_i2c: i2c@7081400 {
@@ -782,6 +912,18 @@
 			#address-cells = <1>;
 			#size-cells = <0>;
 		};
+
+		r_uart: serial@7080000 {
+			compatible = "snps,dw-apb-uart";
+			reg = <0x07080000 0x400>;
+			interrupts = <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&r_ccu CLK_R_APB2_UART>;
+			resets = <&r_ccu RST_R_APB2_UART>;
+			status = "disabled";
+		};
+
 	};
 
 	thermal-zones {
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";
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
index afee79f..c66f4dd 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
@@ -323,8 +348,14 @@
 	};
 };
 
+&r_uart {
+	pinctrl-names = "default";
+	pinctrl-0 = <&r_uart_pins>;
+	status = "disabled";
+};
+
 /delete-node/ &spi0;
 
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_ph_pins>;