[PATCH 1/3] dt-bindings: display: Add Document for Rockchip Soc LVDS
p.zabel at pengutronix.de
Fri Aug 11 08:38:31 PDT 2017
On Wed, 2017-08-09 at 18:00 +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 at rock-chips.com>
> > Signed-off-by: Mark yao <mark.yao at rock-chips.com>
> > Signed-off-by: Heiko Stuebner <heiko at sntech.de>
> .../bindings/display/rockchip/rockchip-lvds.txt | 104 +++++++++++++++++++++
> 1 file changed, 104 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..bf934ba
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/rockchip/rockchip-lvds.txt
> @@ -0,0 +1,104 @@
> +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
> +- rockchip,data-mapping: should be "vesa" or "jeida",
> > + This describes how the color bits are laid out in the
> > + serialized LVDS signal.
> +- rockchip,data-width : should be <18> or <24>;
This can already be described by the panel itself, via the bus_format
property in the panel_desc for panel-simple, or via the existing panel
device tree property "data-mapping" in panel-lvds, which can be set to
"jeida-18", "jeida-24", or "vesa-24".
The LVDS driver can then read the panel bus information from the
So if these properties are necessary at all, they at least should be
More information about the Linux-rockchip