linux-kernel - [PATCH 08/14] dt-bindings: display: bridge: Add i.MX8qxp pixel link to DPI binding

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Date:   Thu, 17 Dec 2020 17:59:27 +0800
From:   Liu Ying <victor.liu@....com>
To:     dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org
Cc:     airlied@...ux.ie, daniel@...ll.ch, robh+dt@...nel.org,
        shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
        festevam@...il.com, linux-imx@....com, mchehab@...nel.org,
        a.hajda@...sung.com, narmstrong@...libre.com,
        Laurent.pinchart@...asonboard.com, jonas@...boo.se,
        jernej.skrabec@...l.net, kishon@...com, vkoul@...nel.org
Subject: [PATCH 08/14] dt-bindings: display: bridge: Add i.MX8qxp pixel link to DPI binding

This patch adds bindings for i.MX8qxp pixel link to DPI(PXL2DPI).

Signed-off-by: Liu Ying <victor.liu@....com>
---
 .../display/bridge/fsl,imx8qxp-pxl2dpi.yaml        | 134 +++++++++++++++++++++
 1 file changed, 134 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..1649622
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pxl2dpi.yaml
@@ -0,0 +1,134 @@
+# 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@....com>
+
+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.
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-pxl2dpi
+
+  power-domains:
+    maxItems: 1
+
+  fsl,syscon:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: |
+      A phandle which points to Control and Status Registers(CSR) module.
+
+  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:
+    type: object
+    description: |
+      A node containing PXL2DPI input & output port nodes with endpoint
+      definitions as documented in
+      Documentation/devicetree/bindings/media/video-interfaces.txt
+      Documentation/devicetree/bindings/graph.txt
+
+    properties:
+      '#address-cells':
+        const: 1
+
+      '#size-cells':
+        const: 0
+
+      port@0:
+        type: object
+        description: The PXL2DPI input port node from pixel link.
+
+        properties:
+          reg:
+            const: 0
+
+        required:
+          - reg
+
+      port@1:
+        type: object
+        description: The PXL2DPI output port node to downstream bridge.
+
+        properties:
+          reg:
+            const: 1
+
+        required:
+          - reg
+
+    required:
+      - "#address-cells"
+      - "#size-cells"
+      - port@0
+      - port@1
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - power-domains
+  - fsl,syscon
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/firmware/imx/rsrc.h>
+    pxl2dpi {
+        compatible = "fsl,imx8qxp-pxl2dpi";
+        power-domains = <&pd IMX_SC_R_MIPI_0>;
+        fsl,syscon = <&mipi_lvds_0_csr>;
+
+        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