brcm,bcm2835-gpio.yaml

  1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/pinctrl/brcm,bcm2835-gpio.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: Broadcom BCM2835 GPIO (and pinmux) controller
  8
  9maintainers:
 10  - Florian Fainelli <f.fainelli@gmail.com>
 11
 12description: >
 13  The BCM2835 GPIO module is a combined GPIO controller, (GPIO) interrupt
 14  controller, and pinmux/control device.
 15
 16properties:
 17  compatible:
 18    enum:
 19      - brcm,bcm2835-gpio
 20      - brcm,bcm2711-gpio
 21      - brcm,bcm7211-gpio
 22
 23  reg:
 24    maxItems: 1
 25
 26  '#gpio-cells':
 27    const: 2
 28
 29  gpio-controller: true
 30  gpio-ranges: true
 31  gpio-line-names: true
 32
 33  interrupts:
 34    description: >
 35      Interrupt outputs: one per bank, then the combined “all banks” line.
 36      BCM7211 may specify up to four per-bank wake-up lines and one combined
 37      wake-up interrupt.
 38    minItems: 4
 39    maxItems: 10
 40
 41  '#interrupt-cells':
 42    const: 2
 43
 44  interrupt-controller: true
 45
 46additionalProperties:
 47  oneOf:
 48    - type: object
 49      additionalProperties: false
 50
 51      patternProperties:
 52        '^pins?-':
 53          type: object
 54          allOf:
 55            - $ref: /schemas/pinctrl/pincfg-node.yaml#
 56            - $ref: /schemas/pinctrl/pinmux-node.yaml#
 57          additionalProperties: false
 58
 59          properties:
 60            pins: true
 61            function: true
 62            bias-disable: true
 63            bias-pull-up: true
 64            bias-pull-down: true
 65            output-high: true
 66            output-low: true
 67
 68          required:
 69            - pins
 70            - function
 71
 72    - type: object
 73      additionalProperties: false
 74      deprecated: true
 75
 76      properties:
 77        brcm,pins:
 78          description:
 79            GPIO pin numbers for legacy configuration.
 80          $ref: /schemas/types.yaml#/definitions/uint32-array
 81
 82        brcm,function:
 83          description:
 84            Legacy mux function for the pins (0=input, 1=output, 2–7=alt functions).
 85          $ref: /schemas/types.yaml#/definitions/uint32-array
 86          maximum: 7
 87
 88        brcm,pull:
 89          description: >
 90            Legacy pull setting for the pins (0=none, 1=pull-down, 2=pull-up).
 91          $ref: /schemas/types.yaml#/definitions/uint32-array
 92          maximum: 2
 93
 94      required:
 95        - brcm,pins
 96
 97allOf:
 98  - if:
 99      properties:
100        compatible:
101          contains:
102            enum:
103              - brcm,bcm2835-gpio
104              - brcm,bcm2711-gpio
105    then:
106      properties:
107        interrupts:
108          maxItems: 5
109
110examples:
111  - |
112    gpio@2200000 {
113        compatible = "brcm,bcm2835-gpio";
114        reg = <0x2200000 0xb4>;
115        interrupts = <2 17>, <2 19>, <2 18>, <2 20>, <2 21>;
116        #gpio-cells = <2>;
117        gpio-controller;
118        #interrupt-cells = <2>;
119        interrupt-controller;
120    };