diff --git a/arch/arm64/boot/dts/amlogic/mesong12_odroid_common.dtsi b/arch/arm64/boot/dts/amlogic/mesong12_odroid_common.dtsi
index b2a6c8fd51bf..121acfa01cd3 100644
--- a/arch/arm64/boot/dts/amlogic/mesong12_odroid_common.dtsi
+++ b/arch/arm64/boot/dts/amlogic/mesong12_odroid_common.dtsi
@@ -345,6 +345,14 @@
 	};
 };
 
+&a_uart_pins {
+	mux {
+		groups = "uart_tx_a",
+			"uart_rx_a";
+		function = "uart_a";
+	};
+};
+
 &usb2_phy_v2 {
 	status = "okay";
 	portnum = <2>;