On Thu, Feb 18, 2021 at 11:41:49AM +0800, Liu Ying wrote: > This patch adds bindings for i.MX8qxp pixel link to DPI(PXL2DPI). > > Signed-off-by: Liu Ying <victor.liu@xxxxxxx> > --- > v3->v4: > * Add 'fsl,sc-resource' property. (Rob) > > v2->v3: > * Drop 'fsl,syscon' property. (Rob) > * Mention the CSR module controls PXL2DPI. > > v1->v2: > * Use graph schema. (Laurent) > > .../display/bridge/fsl,imx8qxp-pxl2dpi.yaml | 108 +++++++++++++++++++++ > 1 file changed, 108 insertions(+) > create mode 100644 Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pxl2dpi.yaml > > diff --git a/Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pxl2dpi.yaml b/Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pxl2dpi.yaml > new file mode 100644 > index 00000000..e4e77fa > --- /dev/null > +++ b/Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pxl2dpi.yaml > @@ -0,0 +1,108 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/display/bridge/fsl,imx8qxp-pxl2dpi.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Freescale i.MX8qxp Pixel Link to Display Pixel Interface > + > +maintainers: > + - Liu Ying <victor.liu@xxxxxxx> > + > +description: | > + The Freescale i.MX8qxp Pixel Link to Display Pixel Interface(PXL2DPI) > + interfaces the pixel link 36-bit data output and the DSI controller’s > + MIPI-DPI 24-bit data input, and inputs of LVDS Display Bridge(LDB) module > + used in LVDS mode, to remap the pixel color codings between those modules. > + This module is purely combinatorial. > + > + The i.MX8qxp PXL2DPI is controlled by Control and Status Registers(CSR) module. > + The CSR module, as a system controller, contains the PXL2DPI's configuration > + register. So this node should be a child of the CSR. Ideally, this schema is also referenced from the CSR's schema (and if that doesn't exist, it should be there first). > + > +properties: > + compatible: > + const: fsl,imx8qxp-pxl2dpi > + > + fsl,sc-resource: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: The SCU resource ID associated with this PXL2DPI instance. > + > + power-domains: > + maxItems: 1 > + > + fsl,companion-pxl2dpi: > + $ref: /schemas/types.yaml#/definitions/phandle > + description: | > + A phandle which points to companion PXL2DPI which is used by downstream > + LVDS Display Bridge(LDB) in split mode. > + > + ports: > + $ref: /schemas/graph.yaml#/properties/ports > + > + properties: > + port@0: > + $ref: /schemas/graph.yaml#/properties/port > + description: The PXL2DPI input port node from pixel link. > + > + port@1: > + $ref: /schemas/graph.yaml#/properties/port > + description: The PXL2DPI output port node to downstream bridge. > + > + required: > + - port@0 > + - port@1 > + > +required: > + - compatible > + - fsl,sc-resource > + - power-domains > + - ports > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/firmware/imx/rsrc.h> > + pxl2dpi { > + compatible = "fsl,imx8qxp-pxl2dpi"; > + fsl,sc-resource = <IMX_SC_R_MIPI_0>; > + power-domains = <&pd IMX_SC_R_MIPI_0>; > + > + ports { > + #address-cells = <1>; > + #size-cells = <0>; > + > + port@0 { > + #address-cells = <1>; > + #size-cells = <0>; > + reg = <0>; > + > + mipi_lvds_0_pxl2dpi_dc_pixel_link0: endpoint@0 { > + reg = <0>; > + remote-endpoint = <&dc_pixel_link0_mipi_lvds_0_pxl2dpi>; > + }; > + > + mipi_lvds_0_pxl2dpi_dc_pixel_link1: endpoint@1 { > + reg = <1>; > + remote-endpoint = <&dc_pixel_link1_mipi_lvds_0_pxl2dpi>; > + }; > + }; > + > + port@1 { > + #address-cells = <1>; > + #size-cells = <0>; > + reg = <1>; > + > + mipi_lvds_0_pxl2dpi_mipi_lvds_0_ldb_ch0: endpoint@0 { > + reg = <0>; > + remote-endpoint = <&mipi_lvds_0_ldb_ch0_mipi_lvds_0_pxl2dpi>; > + }; > + > + mipi_lvds_0_pxl2dpi_mipi_lvds_0_ldb_ch1: endpoint@1 { > + reg = <1>; > + remote-endpoint = <&mipi_lvds_0_ldb_ch1_mipi_lvds_0_pxl2dpi>; > + }; > + }; > + }; > + }; > -- > 2.7.4 >
