diff --git a/arch/arm64/boot/dts/rockchip/rk3576-industry-evb.dtsi b/arch/arm64/boot/dts/rockchip/rk3576-industry-evb.dtsi
index faf958249f01..a45a91fabea2 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576-industry-evb.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3576-industry-evb.dtsi
@@ -221,6 +221,7 @@
 &uart1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart1m0_xfer &uart1m0_rtsn>;
+	linux,rs485-enabled-at-boot-time;
 	status = "okay";
 };