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Thu, 9 Jun 2022 06:48:38 +0000 From: Liu Ying To: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org Subject: [PATCH v8 05/14] dt-bindings: display: bridge: Add i.MX8qm/qxp display pixel link binding Date: Thu, 9 Jun 2022 14:49:22 +0800 Message-Id: <20220609064931.3068601-6-victor.liu@nxp.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220609064931.3068601-1-victor.liu@nxp.com> References: <20220609064931.3068601-1-victor.liu@nxp.com> X-ClientProxiedBy: SGXP274CA0008.SGPP274.PROD.OUTLOOK.COM (2603:1096:4:b8::20) To AM7PR04MB7046.eurprd04.prod.outlook.com (2603:10a6:20b:113::22) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 301c3304-93c3-46ed-06c8-08da49e41510 X-MS-TrafficTypeDiagnostic: VI1PR0402MB3518:EE_ X-LD-Processed: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635,ExtAddr X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Reviewed-by: Rob Herring Signed-off-by: Liu Ying --- 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 | 106 ++++++++++++++++++ 1 file changed, 106 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..3af67ccf8db1 --- /dev/null +++ b/Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pixel-link.yaml @@ -0,0 +1,106 @@ +# 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 + +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 + + 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 + +required: + - compatible + - ports + +additionalProperties: false + +examples: + - | + dc0-pixel-link0 { + compatible = "fsl,imx8qxp-dc-pixel-link"; + + 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>; + }; + }; + };