dt-bindings: display: rockchip: document VOP gamma LUT address

Add the register specifier description for an
optional gamma LUT address.

Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191010194351.17940-2-ezequiel@collabora.com

diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt b/Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt
index 4f58c5a..8b3a5f5 100644 (file)
--- a/Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt
+++ b/Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt
@@ -20,6 +20,10 @@ Required properties:
                "rockchip,rk3228-vop";
                "rockchip,rk3328-vop";
 
+- reg: Must contain one entry corresponding to the base address and length
+       of the register space. Can optionally contain a second entry
+       corresponding to the CRTC gamma LUT address.
+
 - interrupts: should contain a list of all VOP IP block interrupts in the
                 order: VSYNC, LCD_SYSTEM. The interrupt specifier
                 format depends on the interrupt controller used.
@@ -48,7 +52,7 @@ Example:
 SoC specific DT entry:
        vopb: vopb@ff930000 {
                compatible = "rockchip,rk3288-vop";
-               reg = <0xff930000 0x19c>;
+               reg = <0x0 0xff930000 0x0 0x19c>, <0x0 0xff931000 0x0 0x1000>;
                interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
                clocks = <&cru ACLK_VOP0>, <&cru DCLK_VOP0>, <&cru HCLK_VOP0>;
                clock-names = "aclk_vop", "dclk_vop", "hclk_vop";