Documentation/devicetree/bindings/gpio/cdns,gpio.yaml

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

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/gpio/cdns,gpio.yaml
Extension
.yaml
Size
1721 bytes
Lines
85
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.

Dependency Surface

Detected Declarations

Annotated Snippet

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

title: Cadence GPIO Controller

maintainers:
  - Jan Kotas <jank@cadence.com>

properties:
  compatible:
    oneOf:
      - const: cdns,gpio-r1p02
      - items:
          - enum:
              - axiado,ax3000-gpio
          - const: cdns,gpio-r1p02

  reg:
    maxItems: 1

  clocks:
    maxItems: 1

  ngpios:
    minimum: 1
    maximum: 32

  gpio-controller: true

  "#gpio-cells":
    const: 2
    description: |
      - First cell is the GPIO line number.
      - Second cell is flags as defined in <dt-bindings/gpio/gpio.h>,
        only GPIO_ACTIVE_HIGH and GPIO_ACTIVE_LOW supported.

  interrupt-controller: true

  "#interrupt-cells":
    const: 2
    description: |
      - First cell is the GPIO line number used as IRQ.
      - Second cell is the trigger type, as defined in
        <dt-bindings/interrupt-controller/irq.h>.

  interrupts:
    maxItems: 1

required:
  - compatible
  - reg
  - clocks
  - gpio-controller
  - "#gpio-cells"

if:
  required: [interrupt-controller]
then:
  required:
    - interrupts

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/interrupt-controller/irq.h>

Annotation

Implementation Notes