Documentation/devicetree/bindings/gpio/snps,dw-apb-gpio.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/gpio/snps,dw-apb-gpio.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/gpio/snps,dw-apb-gpio.yaml
Extension
.yaml
Size
3230 bytes
Lines
152
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 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/gpio/snps,dw-apb-gpio.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Synopsys DesignWare APB GPIO controller

description: |
  Synopsys DesignWare GPIO controllers have a configurable number of ports,
  each of which are intended to be represented as child nodes with the generic
  GPIO-controller properties as described in this bindings file.

maintainers:
  - Hoan Tran <hoan@os.amperecomputing.com>
  - Serge Semin <fancer.lancer@gmail.com>

properties:
  $nodename:
    pattern: "^gpio@[0-9a-f]+$"

  compatible:
    const: snps,dw-apb-gpio

  "#address-cells":
    const: 1

  "#size-cells":
    const: 0

  reg:
    maxItems: 1

  clocks:
    minItems: 1
    items:
      - description: APB interface clock source
      - description: DW GPIO debounce reference clock source

  clock-names:
    minItems: 1
    items:
      - const: bus
      - const: db

  resets:
    maxItems: 1

patternProperties:
  "^gpio-(port|controller)@[0-9a-f]+$":
    type: object
    properties:
      compatible:
        const: snps,dw-apb-gpio-port

      reg:
        maxItems: 1

      gpio-controller: true

      '#gpio-cells':
        const: 2

      gpio-line-names:
        minItems: 1
        maxItems: 32

      gpio-ranges: true

      ngpios:

Annotation

Implementation Notes