Documentation/devicetree/bindings/display/xylon,logicvc-display.yaml

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

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System
Linux kernel
Corpus path
Documentation/devicetree/bindings/display/xylon,logicvc-display.yaml
Extension
.yaml
Size
8554 bytes
Lines
302
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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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
# Copyright 2019 Bootlin
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/xylon,logicvc-display.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Xylon LogiCVC display controller

maintainers:
  - Paul Kocialkowski <paul.kocialkowski@bootlin.com>

description: |
  The Xylon LogiCVC is a display controller that supports multiple layers.
  It is usually implemented as programmable logic and was optimized for use
  with Xilinx Zynq-7000 SoCs and Xilinx FPGAs.

  Because the controller is intended for use in a FPGA, most of the
  configuration of the controller takes place at logic configuration bitstream
  synthesis time. As a result, many of the device-tree bindings are meant to
  reflect the synthesis configuration and must not be configured differently.
  Matching synthesis parameters are provided when applicable.

  Layers are declared in the "layers" sub-node and have dedicated configuration.
  In version 3 of the controller, each layer has fixed memory offset and address
  starting from the video memory base address for its framebuffer. In version 4,
  framebuffers are configured with a direct memory address instead.

properties:
  compatible:
    enum:
      - xylon,logicvc-3.02.a-display
      - xylon,logicvc-4.01.a-display

  reg:
    maxItems: 1

  clocks:
    minItems: 1
    maxItems: 4

  clock-names:
    minItems: 1
    items:
      # vclk is required and must be provided as first item.
      - const: vclk
      # Other clocks are optional and can be provided in any order.
      - enum:
          - vclk2
          - lvdsclk
          - lvdsclkn
      - enum:
          - vclk2
          - lvdsclk
          - lvdsclkn
      - enum:
          - vclk2
          - lvdsclk
          - lvdsclkn

  interrupts:
    maxItems: 1

  memory-region:
    maxItems: 1

  xylon,display-interface:
    enum:
      # Parallel RGB interface (C_DISPLAY_INTERFACE == 0)
      - parallel-rgb

Annotation

Implementation Notes