diff --git a/arch/arm64/boot/dts/mediatek/mt6797-evb.dts b/arch/arm64/boot/dts/mediatek/mt6797-evb.dts
index c79109c65409..237e869a5fa1 100644
--- a/arch/arm64/boot/dts/mediatek/mt6797-evb.dts
+++ b/arch/arm64/boot/dts/mediatek/mt6797-evb.dts
@@ -33,4 +33,6 @@ memory@40000000 {
 
 &uart0 {
 	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_pins_a>;
 };
diff --git a/arch/arm64/boot/dts/mediatek/mt6797.dtsi b/arch/arm64/boot/dts/mediatek/mt6797.dtsi
index a64bb84bdec3..2b2a69c7567f 100644
--- a/arch/arm64/boot/dts/mediatek/mt6797.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt6797.dtsi
@@ -142,6 +142,13 @@ pio: pinctrl@10005000 {
 		gpio-controller;
 		#gpio-cells = <2>;
 
+		uart0_pins_a: uart0 {
+			pins0 {
+				pinmux = <MT6797_GPIO234__FUNC_UTXD0>,
+					 <MT6797_GPIO235__FUNC_URXD0>;
+			};
+		};
+
 		uart1_pins_a: uart1 {
 			pins1 {
 				pinmux = <MT6797_GPIO232__FUNC_URXD1>,