This patch adds bindings for i.MX8qm/qxp display pixel link. Signed-off-by: Liu Ying <victor.liu@xxxxxxx> --- v8->v9: * Add 'fsl,dc-id' and 'fsl,dc-stream-id' properties. (Laurent) * Drop Rob's R-b tag. v7->v8: * No change. v6->v7: * No change. v5->v6: * No change. v4->v5: * No change. v3->v4: * No change. v2->v3: * Add Rob's R-b tag. v1->v2: * Use graph schema. (Laurent) * Require all four pixel link output ports. (Laurent) * Mention pixel link is accessed via SCU firmware. (Rob) .../bridge/fsl,imx8qxp-pixel-link.yaml | 144 ++++++++++++++++++ 1 file changed, 144 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pixel-link.yaml diff --git a/Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pixel-link.yaml b/Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pixel-link.yaml new file mode 100644 index 000000000000..38ecc7926fad --- /dev/null +++ b/Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pixel-link.yaml @@ -0,0 +1,144 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/bridge/fsl,imx8qxp-pixel-link.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Freescale i.MX8qm/qxp Display Pixel Link + +maintainers: + - Liu Ying <victor.liu@xxxxxxx> + +description: | + The Freescale i.MX8qm/qxp Display Pixel Link(DPL) forms a standard + asynchronous linkage between pixel sources(display controller or + camera module) and pixel consumers(imaging or displays). + It consists of two distinct functions, a pixel transfer function and a + control interface. Multiple pixel channels can exist per one control channel. + This binding documentation is only for pixel links whose pixel sources are + display controllers. + + The i.MX8qm/qxp Display Pixel Link is accessed via System Controller Unit(SCU) + firmware. + +properties: + compatible: + enum: + - fsl,imx8qm-dc-pixel-link + - fsl,imx8qxp-dc-pixel-link + + fsl,dc-id: + $ref: /schemas/types.yaml#/definitions/uint8 + description: | + u8 value representing the display controller index that the pixel link + connects to. + + fsl,dc-stream-id: + $ref: /schemas/types.yaml#/definitions/uint8 + description: | + u8 value representing the display controller stream index that the pixel + link connects to. + enum: [0, 1] + + ports: + $ref: /schemas/graph.yaml#/properties/ports + + properties: + port@0: + $ref: /schemas/graph.yaml#/properties/port + description: The pixel link input port node from upstream video source. + + patternProperties: + "^port@[1-4]$": + $ref: /schemas/graph.yaml#/properties/port + description: The pixel link output port node to downstream bridge. + + required: + - port@0 + - port@1 + - port@2 + - port@3 + - port@4 + +allOf: + - if: + properties: + compatible: + contains: + const: fsl,imx8qxp-dc-pixel-link + then: + properties: + fsl,dc-id: + const: 0 + + - if: + properties: + compatible: + contains: + const: fsl,imx8qm-dc-pixel-link + then: + properties: + fsl,dc-id: + enum: [0, 1] + +required: + - compatible + - fsl,dc-id + - fsl,dc-stream-id + - ports + +additionalProperties: false + +examples: + - | + dc0-pixel-link0 { + compatible = "fsl,imx8qxp-dc-pixel-link"; + fsl,dc-id = /bits/ 8 <0>; + fsl,dc-stream-id = /bits/ 8 <0>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + /* from dc0 pixel combiner channel0 */ + port@0 { + reg = <0>; + + dc0_pixel_link0_dc0_pixel_combiner_ch0: endpoint { + remote-endpoint = <&dc0_pixel_combiner_ch0_dc0_pixel_link0>; + }; + }; + + /* to PXL2DPIs in MIPI/LVDS combo subsystems */ + port@1 { + #address-cells = <1>; + #size-cells = <0>; + reg = <1>; + + dc0_pixel_link0_mipi_lvds_0_pxl2dpi: endpoint@0 { + reg = <0>; + remote-endpoint = <&mipi_lvds_0_pxl2dpi_dc0_pixel_link0>; + }; + + dc0_pixel_link0_mipi_lvds_1_pxl2dpi: endpoint@1 { + reg = <1>; + remote-endpoint = <&mipi_lvds_1_pxl2dpi_dc0_pixel_link0>; + }; + }; + + /* unused */ + port@2 { + reg = <2>; + }; + + /* unused */ + port@3 { + reg = <3>; + }; + + /* to imaging subsystem */ + port@4 { + reg = <4>; + }; + }; + }; -- 2.25.1
