diff --git a/src/arm64/rockchip/px30-ringneck-haikou.dts b/src/arm64/rockchip/px30-ringneck-haikou.dts
index 16798eb..ae398ac 100644
--- a/src/arm64/rockchip/px30-ringneck-haikou.dts
+++ b/src/arm64/rockchip/px30-ringneck-haikou.dts
@@ -227,6 +227,7 @@
 
 &uart5 {
 	pinctrl-0 = <&uart5_xfer>;
+	rts-gpios = <&gpio0 RK_PB5 GPIO_ACTIVE_HIGH>;
 	status = "okay";
 };