Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml
Extension
.yaml
Size
2187 bytes
Lines
66
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

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Annotated Snippet

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/sprd/sprd,display-subsystem.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Unisoc DRM master device

maintainers:
  - Kevin Tang <kevin.tang@unisoc.com>

description: |
  The Unisoc DRM master device is a virtual device needed to list all
  DPU devices or other display interface nodes that comprise the
  graphics subsystem.

  Unisoc's display pipeline have several components as below description,
  multi display controllers and corresponding physical interfaces.
  For different display scenarios, dpu0 and dpu1 maybe binding to different
  encoder.

  E.g:
  dpu0 and dpu1 both binding to DSI for dual mipi-dsi display;
  dpu0 binding to DSI for primary display, and dpu1 binding to DP for external display;

          +-----------------------------------------+
          |                                         |
          |                            +---------+  |
  +----+  |   +----+    +---------+    |DPHY/CPHY|  |   +------+
  |    +----->+dpu0+--->+MIPI|DSI +--->+Combo    +----->+Panel0|
  |AXI |  |   +----+    +---------+    +---------+  |   +------+
  |    |  |                  ^                      |
  |    |  |                  |                      |
  |    |  |      +-----------+                      |
  |    |  |      |                                  |
  |APB |  |   +--+-+    +-----------+    +---+      |   +------+
  |    +----->+dpu1+--->+DisplayPort+--->+PHY+--------->+Panel1|
  |    |  |   +----+    +-----------+    +---+      |   +------+
  +----+  |                                         |
          +-----------------------------------------+

properties:
  compatible:
    const: sprd,display-subsystem

  ports:
    $ref: /schemas/types.yaml#/definitions/phandle-array
    items:
      maxItems: 1
    description:
      Should contain a list of phandles pointing to display interface port
      of DPU devices.

required:
  - compatible
  - ports

additionalProperties: false

examples:
  - |
    display-subsystem {
        compatible = "sprd,display-subsystem";
        ports = <&dpu_out>;
    };

Annotation

Implementation Notes