xref: /openbmc/linux/Documentation/devicetree/bindings/gpio/ti,omap-gpio.yaml (revision bc3aca53)

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

title: OMAP GPIO controller bindings

maintainers:
  - Grygorii Strashko <grygorii.strashko@ti.com>

description: |
  The general-purpose interface combines general-purpose input/output (GPIO) banks.
  Each GPIO banks provides up to 32 dedicated general-purpose pins with input
  and output capabilities; interrupt generation in active mode and wake-up
  request generation in idle mode upon the detection of external events.

properties:
  compatible:
    oneOf:
      - enum:
          - ti,omap2-gpio
          - ti,omap3-gpio
          - ti,omap4-gpio
      - items:
          - const: ti,am4372-gpio
          - const: ti,omap4-gpio

  reg:
    maxItems: 1

  gpio-controller: true

  '#gpio-cells':
    const: 2

  interrupt-controller: true

  '#interrupt-cells':
    const: 2

  interrupts:
    maxItems: 1

  gpio-ranges: true

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

  ti,gpio-always-on:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      Indicates if a GPIO bank is always powered and will never lose its logic state.

  ti,hwmods:
    $ref: /schemas/types.yaml#/definitions/string
    deprecated: true
    description:
      Name of the hwmod associated with the GPIO. Needed on some legacy OMAP
      SoCs which have not been converted to the ti,sysc interconnect hierarachy.

  ti,no-reset-on-init:
    $ref: /schemas/types.yaml#/definitions/flag
    deprecated: true
    description:
      Do not reset on init. Used with ti,hwmods on some legacy OMAP SoCs which
      have not been converted to the ti,sysc interconnect hierarachy.

patternProperties:
  "^(.+-hog(-[0-9]+)?)$":
    type: object

    required:
      - gpio-hog

required:
  - compatible
  - reg
  - gpio-controller
  - "#gpio-cells"
  - interrupt-controller
  - "#interrupt-cells"
  - interrupts

additionalProperties: false

examples:
  - |
    #include <dt-bindings/gpio/gpio.h>

    gpio0: gpio@0 {
        compatible = "ti,omap4-gpio";
        reg = <0x0 0x1000>;
        gpio-controller;
        #gpio-cells = <2>;
        interrupt-controller;
        #interrupt-cells = <2>;
        interrupts = <96>;
        ti,gpio-always-on;

        ls-buf-en-hog {
            gpio-hog;
            gpios = <10 GPIO_ACTIVE_HIGH>;
            output-high;
            line-name = "LS_BUF_EN";
        };
    };