diff --git a/Documentation/devicetree/bindings/display/rockchip/dw_mipi_dsi_rockchip.txt b/Documentation/devicetree/bindings/display/rockchip/dw_mipi_dsi_rockchip.txt
index 1753f0cc6fad..1ed91f92251b 100644
--- a/Documentation/devicetree/bindings/display/rockchip/dw_mipi_dsi_rockchip.txt
+++ b/Documentation/devicetree/bindings/display/rockchip/dw_mipi_dsi_rockchip.txt
@@ -5,14 +5,19 @@ Required properties:
 - #address-cells: Should be <1>.
 - #size-cells: Should be <0>.
 - compatible: "rockchip,rk3288-mipi-dsi", "snps,dw-mipi-dsi".
+  or "rockchip,rk3399-mipi-dsi", "snps,dw-mipi-dsi".
 - reg: Represent the physical address range of the controller.
 - interrupts: Represent the controller's interrupt to the CPU(s).
 - clocks, clock-names: Phandles to the controller's pll reference
-  clock(ref) and APB clock(pclk), as described in [1].
+  clock(ref) and APB clock(pclk) as described in [1].
 - rockchip,grf: this soc should set GRF regs to mux vopl/vopb.
 - ports: contain a port node with endpoint definitions as defined in [2].
   For vopb,set the reg = <0> and set the reg = <1> for vopl.
 
+Optional properties
+- clocks, clock-names: phandle to the mipi dsi phy config clock, name should be
+  "phy_cfg".
+
 [1] Documentation/devicetree/bindings/clock/clock-bindings.txt
 [2] Documentation/devicetree/bindings/media/video-interfaces.txt
 
@@ -23,8 +28,9 @@ Example:
 		compatible = "rockchip,rk3288-mipi-dsi", "snps,dw-mipi-dsi";
 		reg = <0xff960000 0x4000>;
 		interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&cru SCLK_MIPI_24M>, <&cru PCLK_MIPI_DSI0>;
-		clock-names = "ref", "pclk";
+		clocks = <&cru SCLK_MIPI_24M>, <&cru PCLK_MIPI_DSI0>,
+			 <&cru SCLK_DPHY_TX0_CFG>;
+		clock-names = "ref", "pclk", "phy_cfg";
 		rockchip,grf = <&grf>;
 		status = "okay";