Thread (24 messages) 24 messages, 4 authors, 2021-03-17
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Revisions (9)
  1. v1 [diff vs current]
  2. v2 [diff vs current]
  3. v3 [diff vs current]
  4. v4 [diff vs current]
  5. v5 current
  6. v6 [diff vs current]
  7. v7 [diff vs current]
  8. v8 [diff vs current]
  9. v9 [diff vs current]

[PATCH v5 08/14] dt-bindings: display: bridge: Add i.MX8qxp pixel link to DPI binding

From: Liu Ying <victor.liu@nxp.com>
Date: 2021-03-10 10:10:46
Also in: dri-devel, linux-arm-kernel, linux-media, lkml
Subsystem: drm drivers, drm drivers and misc gpu patches, drm drivers for bridge chips, drm drivers for freescale imx bridge, open firmware and flattened device tree bindings, the rest · Maintainers: David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Andrzej Hajda, Neil Armstrong, Robert Foss, Liu Ying, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds

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

Signed-off-by: Liu Ying <victor.liu@nxp.com>
---
v4->v5:
* No change.

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@nxp.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.
+
+  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.
+
+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
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