Documentation/devicetree/bindings/pinctrl/brcm,iproc-gpio.yaml

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

title: Broadcom iProc GPIO/PINCONF Controller

maintainers:
  - Ray Jui <rjui@broadcom.com>
  - Scott Branden <sbranden@broadcom.com>

properties:
  compatible:
    oneOf:
      - enum:
          - brcm,cygnus-asiu-gpio
          - brcm,cygnus-ccm-gpio
          - brcm,cygnus-crmu-gpio
          - brcm,iproc-gpio
          - brcm,iproc-stingray-gpio
      - items:
          - enum:
              - brcm,iproc-hr2-gpio
              - brcm,iproc-nsp-gpio
          - const: brcm,iproc-gpio

  reg:
    minItems: 1
    items:
      - description: GPIO Bank registers
      - description: IO Ctrl registers

  "#gpio-cells":
    const: 2

  gpio-controller: true

  gpio-ranges: true

  ngpios: true

  "#interrupt-cells":
    const: 2

  interrupts:
    maxItems: 1

  interrupt-controller: true

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

patternProperties:
  '-pins$':
    type: object
    additionalProperties:
      description: Pin configuration child nodes.
      allOf:
        - $ref: pincfg-node.yaml#
        - $ref: pinmux-node.yaml#
      additionalProperties: false

      properties:
        pins:
          items:
            pattern: '^gpio-'

        bias-disable: true
        bias-pull-up: true
        bias-pull-down: true

        drive-strength:
          enum: [ 2, 4, 6, 8, 10, 12, 14, 16 ]

      required:
        - pins

additionalProperties: false

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

    gpio@1800a000 {
        compatible = "brcm,cygnus-ccm-gpio";
        reg = <0x1800a000 0x50>,
              <0x0301d164 0x20>;
        ngpios = <24>;
        #gpio-cells = <2>;
        gpio-controller;
        #interrupt-cells = <2>;
        interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>;
        interrupt-controller;

        touch-pins {
            pwr {
                pins = "gpio-0";
                drive-strength = <16>;
            };

            event {
                pins = "gpio-1";
                bias-pull-up;
            };
        };
    };