diff --git a/arch/arm/boot/dts/rk3126-sdk.dts b/arch/arm/boot/dts/rk3126-sdk.dts
index 4cfa11e8f3f5..790384bc70b5 100755
--- a/arch/arm/boot/dts/rk3126-sdk.dts
+++ b/arch/arm/boot/dts/rk3126-sdk.dts
@@ -37,6 +37,10 @@
 	 };	
 };
 
+&fb {
+        rockchip,disp-mode = <NO_DUAL>;
+};
+
 &rk_screen {
 	display-timings = <&disp_timings>;
 };
diff --git a/arch/arm/boot/dts/rk3128-sdk.dts b/arch/arm/boot/dts/rk3128-sdk.dts
index 68447b0704e6..7096641c56f9 100755
--- a/arch/arm/boot/dts/rk3128-sdk.dts
+++ b/arch/arm/boot/dts/rk3128-sdk.dts
@@ -22,6 +22,10 @@
 	};
 };
 
+&fb {
+	rockchip,disp-mode = <ONE_DUAL>;
+};
+
 &rk_screen {
 	display-timings = <&disp_timings>;
 };