diff --git a/arch/arm/boot/dts/amlogic/mesongxl.dtsi b/arch/arm/boot/dts/amlogic/mesongxl.dtsi
index e159aa654d17..82a966877d7f 100644
--- a/arch/arm/boot/dts/amlogic/mesongxl.dtsi
+++ b/arch/arm/boot/dts/amlogic/mesongxl.dtsi
@@ -705,10 +705,15 @@
 		mux {
 			groups = "uart_tx_a",
 				"uart_rx_a",
-				"uart_cts_a",
 				"uart_rts_a";
 			function = "uart_a";
 		};
+
+		mux1 {
+			groups = "uart_cts_a";
+			function = "uart_a";
+			bias-pull-down;
+		};
 	};
 
 	b_uart_pins:b_uart {
diff --git a/arch/arm64/boot/dts/amlogic/mesongxl.dtsi b/arch/arm64/boot/dts/amlogic/mesongxl.dtsi
index 8c1a63984a74..9e911c5b2efb 100644
--- a/arch/arm64/boot/dts/amlogic/mesongxl.dtsi
+++ b/arch/arm64/boot/dts/amlogic/mesongxl.dtsi
@@ -692,10 +692,15 @@
 		mux {
 			groups = "uart_tx_a",
 				"uart_rx_a",
-				"uart_cts_a",
 				"uart_rts_a";
 			function = "uart_a";
 		};
+
+		mux1 {
+			groups = "uart_cts_a";
+			function = "uart_a";
+			bias-pull-down;
+		};
 	};
 
 	b_uart_pins:b_uart {