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


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# 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>
    gpio0: gpio-controller@fd060000 {
        compatible = "cdns,gpio-r1p02";
        reg = <0xfd060000 0x1000>;
        clocks = <&gpio_clk>;

        interrupt-parent = <&gic>;
        interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;

        gpio-controller;
        #gpio-cells = <2>;

        interrupt-controller;
        #interrupt-cells = <2>;
    };