brcm,iproc-gpio.yaml

  1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/pinctrl/brcm,iproc-gpio.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: Broadcom iProc GPIO/PINCONF Controller
  8
  9maintainers:
 10  - Ray Jui <rjui@broadcom.com>
 11  - Scott Branden <sbranden@broadcom.com>
 12
 13properties:
 14  compatible:
 15    oneOf:
 16      - enum:
 17          - brcm,cygnus-asiu-gpio
 18          - brcm,cygnus-ccm-gpio
 19          - brcm,cygnus-crmu-gpio
 20          - brcm,iproc-gpio
 21          - brcm,iproc-stingray-gpio
 22      - items:
 23          - enum:
 24              - brcm,iproc-hr2-gpio
 25              - brcm,iproc-nsp-gpio
 26          - const: brcm,iproc-gpio
 27
 28  reg:
 29    minItems: 1
 30    items:
 31      - description: GPIO Bank registers
 32      - description: IO Ctrl registers
 33
 34  "#gpio-cells":
 35    const: 2
 36
 37  gpio-controller: true
 38
 39  gpio-ranges: true
 40
 41  ngpios: true
 42
 43  "#interrupt-cells":
 44    const: 2
 45
 46  interrupts:
 47    maxItems: 1
 48
 49  interrupt-controller: true
 50
 51required:
 52  - compatible
 53  - reg
 54  - "#gpio-cells"
 55  - gpio-controller
 56  - ngpios
 57
 58patternProperties:
 59  '-pins$':
 60    type: object
 61    additionalProperties:
 62      description: Pin configuration child nodes.
 63      allOf:
 64        - $ref: pincfg-node.yaml#
 65        - $ref: pinmux-node.yaml#
 66      additionalProperties: false
 67
 68      properties:
 69        pins:
 70          items:
 71            pattern: '^gpio-'
 72
 73        bias-disable: true
 74        bias-pull-up: true
 75        bias-pull-down: true
 76
 77        drive-strength:
 78          enum: [ 2, 4, 6, 8, 10, 12, 14, 16 ]
 79
 80      required:
 81        - pins
 82
 83additionalProperties: false
 84
 85examples:
 86  - |
 87    #include <dt-bindings/interrupt-controller/arm-gic.h>
 88
 89    gpio@1800a000 {
 90        compatible = "brcm,cygnus-ccm-gpio";
 91        reg = <0x1800a000 0x50>,
 92              <0x0301d164 0x20>;
 93        ngpios = <24>;
 94        #gpio-cells = <2>;
 95        gpio-controller;
 96        #interrupt-cells = <2>;
 97        interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>;
 98        interrupt-controller;
 99
100        touch-pins {
101            pwr {
102                pins = "gpio-0";
103                drive-strength = <16>;
104            };
105
106            event {
107                pins = "gpio-1";
108                bias-pull-up;
109            };
110        };
111    };