Hi Rob,
在 2017/8/18 4:56, Rob Herring 写道:
On Tue, Aug 15, 2017 at 11:49:19AM +0800, Sandy Huang wrote:
This patch add Document for Rockchip Soc RK3288 LVDS,
This based on the patches from Mark yao and Heiko Stuebner.
Signed-off-by: Sandy Huang <hjc@xxxxxxxxxxxxxx>
Signed-off-by: Mark yao <mark.yao@xxxxxxxxxxxxxx>
Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx>
---
Changes according to Mark Yao reviews.
.../bindings/display/rockchip/rockchip-lvds.txt | 105 +++++++++++++++++++++
1 file changed, 105 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/rockchip/rockchip-lvds.txt
diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip-lvds.txt b/Documentation/devicetree/bindings/display/rockchip/rockchip-lvds.txt
new file mode 100644
index 0000000..c153411
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/rockchip/rockchip-lvds.txt
@@ -0,0 +1,105 @@
+Rockchip RK3288 LVDS interface
+================================
+
+Required properties:
+- compatible: matching the soc type, one of
+ - "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"
+
+- avdd1v0-supply: regulator phandle for 1.0V analog power
+- avdd1v8-supply: regulator phandle for 1.8V analog power
+- avdd3v3-supply: regulator phandle for 3.3V analog power
+
+- rockchip,grf: phandle to the general register files syscon
+
+Optional properties:
+- pinctrl-names: must contain a "lcdc" entry.
+- pinctrl-0: pin control group to be used for this controller.
+
+Required nodes:
+
+The lvds has two video ports as described by
+ Documentation/devicetree/bindings/media/video-interfaces.txt.
+Their connections are modeled using the OF graph bindings specified in
+ Documentation/devicetree/bindings/graph.txt.
+
+- video port 0 for the VOP inputs
+- video port 1 for either a panel or subsequent encoder
+
+the lvds panel described by
+ Documentation/devicetree/bindings/display/panel/simple-panel.txt
+
+Panel required properties:
+- rockchip,data-width : should be <18> or <24>;
+- rockchip,output: should be "rgb", "lvds" or "duallvds",
+ This describes the output face.
These either aren't needed or shouldn't be Rockchip specific. Probably
the former because no one else has them so far.
rockchip,data-width will be deleted and rockchip,output will moved to
lvds at next version v6.
+- ports for remote LVDS output
+
+Panel optional properties:
+- rockchip,data-mapping: should be "vesa" or "jeida",
+ This describes how the color bits are laid out in the
+ serialized LVDS signal.
There's a common property for this.
I willuse data-mapping instead of rockchip,data-mapping and
rockchip,data-width at next version.
+Example:
+
+lvds_panel: lvds-panel {
+ status = "okay";
+ compatible = "simple-panel";
Not a valid compatible. simple-panel is more a driver, than a binding.
This will be fixed next version v6;
+ enable-gpios = <&gpio7 21 GPIO_ACTIVE_HIGH>;
+ rockchip,data-mapping = "jeida";
+ rockchip,data-width = <24>;
+ rockchip,output = "rgb";
+
+ ports {
+ panel_in_lvds: endpoint {
+ remote-endpoint = <&lvds_out_panel>;
+ };
+ };
+};
+
+For Rockchip RK3288:
+
+ lvds: lvds@ff96c000 {
+ compatible = "rockchip,rk3288-lvds";
+ rockchip,grf = <&grf>;
+ reg = <0xff96c000 0x4000>;
+ clocks = <&cru PCLK_LVDS_PHY>;
+ clock-names = "pclk_lvds";
+ pinctrl-names = "lcdc";
+ pinctrl-0 = <&lcdc_ctl>;
+ avdd1v0-supply = <&vdd10_lcd>;
+ avdd1v8-supply = <&vcc18_lcd>;
+ avdd3v3-supply = <&vcca_33>;
+ rockchip,data-mapping = "jeida";
+ rockchip,data-width = <24>;
+ rockchip,output = "rgb";
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ lvds_in: port@0 {
+ reg = <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_out: port@1 {
+ reg = <1>;
+
+ lvds_out_panel: endpoint {
+ remote-endpoint = <&panel_in>;
+ };
+ };
+ };
+ };
--
2.7.4
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