diff --git a/arch/arm64/boot/dts/rockchip/rk3399-box-rev1-disvr.dts b/arch/arm64/boot/dts/rockchip/rk3399-box-rev1-disvr.dts
index c036c599ba9b..a9a929575431 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-box-rev1-disvr.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-box-rev1-disvr.dts
@@ -129,6 +129,7 @@
 	status = "okay";
 	extcon = <&fusb0>;
 	dp_vop_sel = <DISPLAY_SOURCE_LCDC0>;
+	dp_defaultmode = <0>;
 };
 
 &cdn_dp_sound {