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authorJacob Chen <jacob-chen@iotwrt.com>2016-03-14 11:20:19 +0800
committerAnatolij Gustschin <agust@denx.de>2016-03-14 22:24:44 +0100
commitc87c30e3ba9ab110c031c14d1f349118d32041c1 (patch)
tree147510909f172f3df682c81bc357e454ad992357 /doc
parent8530783594f6de14ec6d4b7bf804437d6e1a4f5f (diff)
doc: dt-bindings: Describe rockchip LVDS interface
I didn't have a common board to enable LVDS. So add this dcocument to help others who want to enable LVDS in their board. Signed-off-by: Jacob Chen <jacob-chen@iotwrt.com> Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'doc')
-rw-r--r--doc/device-tree-bindings/video/rockchip-lvds.txt77
1 files changed, 77 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/video/rockchip-lvds.txt b/doc/device-tree-bindings/video/rockchip-lvds.txt
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+Rockchip LVDS interface
+------------------
+
+Required properties:
+- compatible: "rockchip,rk3288-lvds";
+
+- reg: physical base address of the controller and length
+ of memory mapped region.
+- clocks: must include clock specifiers corresponding to entries in the
+ clock-names property.
+- clock-names: must contain "pclk_lvds"
+
+- rockchip,grf: phandle to the general register files syscon
+
+- rockchip,data-mapping: should be <LVDS_FORMAT_VESA> or <LVDS_FORMAT_JEIDA>,
+ This describes how the color bits are laid out in the
+ serialized LVDS signal.
+- rockchip,data-width : should be <18> or <24>;
+- rockchip,output: should be <LVDS_OUTPUT_RGB>, <LVDS_OUTPUT_SINGLE> or
+ <LVDS_OUTPUT_DUAL>, This describes the output face.
+
+- display-timings : described by
+ doc/devicetree/device-tree-bindings/video/display-timing.txt.
+
+Example:
+ lvds: lvds@ff96c000 {
+ compatible = "rockchip,rk3288-lvds";
+ reg = <0xff96c000 0x4000>;
+ clocks = <&cru PCLK_LVDS_PHY>;
+ clock-names = "pclk_lvds";
+ pinctrl-names = "default";
+ pinctrl-0 = <&lcdc0_ctl>;
+ rockchip,grf = <&grf>;
+ status = "disabled";
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ lvds_in: port@0 {
+ reg = <0>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ lvds_in_vopb: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&vopb_out_lvds>;
+ };
+ lvds_in_vopl: endpoint@1 {
+ reg = <1>;
+ remote-endpoint = <&vopl_out_lvds>;
+ };
+ };
+ };
+ };
+
+ &lvds {
+ rockchip,data-mapping = <LVDS_FORMAT_VESA>;
+ rockchip,data-width = <24>;
+ rockchip,output = <LVDS_OUTPUT_DUAL>;
+ rockchip,panel = <&panel>;
+ status = "okay";
+
+ display-timings {
+ timing@0 {
+ clock-frequency = <40000000>;
+ hactive = <1920>;
+ vactive = <1080>;
+ hsync-len = <44>;
+ hfront-porch = <88>;
+ hback-porch = <148>;
+ vfront-porch = <4>;
+ vback-porch = <36>;
+ vsync-len = <5>;
+ };
+ };
+ };