diff --git a/Documentation/devicetree/bindings/video/rockchip_lcdc.txt b/Documentation/devicetree/bindings/video/rockchip_lcdc.txt
index efe5c564e7eb..333b329ddff9 100755
--- a/Documentation/devicetree/bindings/video/rockchip_lcdc.txt
+++ b/Documentation/devicetree/bindings/video/rockchip_lcdc.txt
@@ -7,6 +7,7 @@ Required properties:
 - compatible: value should be one of the following
 		"rockchip,rk3288-lcdc"; /* for RK3288 SoCs */
 		"rockchip,rk3368-lcdc"; /* for RK3368 SoCs */
+		"rockchip,rk3228-lcdc"; /* for RK3228 SoCs */
 - rockchip,prop: set the lcdc as primary or extend display.
 - rochchip,pwr18: set the controller IO voltage,0 is 3.3v,1 is 1.8v.
 - reg: physical base address and length of the LCDC registers set.