121 lines
2.8 KiB
YAML
121 lines
2.8 KiB
YAML
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/pinctrl/brcm,bcm2835-gpio.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Broadcom BCM2835 GPIO (and pinmux) controller
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maintainers:
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- Florian Fainelli <f.fainelli@gmail.com>
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description: >
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The BCM2835 GPIO module is a combined GPIO controller, (GPIO) interrupt
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controller, and pinmux/control device.
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properties:
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compatible:
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enum:
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- brcm,bcm2835-gpio
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- brcm,bcm2711-gpio
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- brcm,bcm7211-gpio
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reg:
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maxItems: 1
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'#gpio-cells':
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const: 2
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gpio-controller: true
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gpio-ranges: true
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gpio-line-names: true
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interrupts:
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description: >
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Interrupt outputs: one per bank, then the combined “all banks” line.
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BCM7211 may specify up to four per-bank wake-up lines and one combined
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wake-up interrupt.
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minItems: 4
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maxItems: 10
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'#interrupt-cells':
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const: 2
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interrupt-controller: true
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additionalProperties:
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oneOf:
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- type: object
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additionalProperties: false
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patternProperties:
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'^pins?-':
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type: object
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allOf:
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- $ref: /schemas/pinctrl/pincfg-node.yaml#
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- $ref: /schemas/pinctrl/pinmux-node.yaml#
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additionalProperties: false
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properties:
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pins: true
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function: true
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bias-disable: true
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bias-pull-up: true
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bias-pull-down: true
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output-high: true
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output-low: true
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required:
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- pins
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- function
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- type: object
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additionalProperties: false
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deprecated: true
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properties:
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brcm,pins:
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description:
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GPIO pin numbers for legacy configuration.
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$ref: /schemas/types.yaml#/definitions/uint32-array
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brcm,function:
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description:
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Legacy mux function for the pins (0=input, 1=output, 2–7=alt functions).
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$ref: /schemas/types.yaml#/definitions/uint32-array
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maximum: 7
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brcm,pull:
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description: >
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Legacy pull setting for the pins (0=none, 1=pull-down, 2=pull-up).
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$ref: /schemas/types.yaml#/definitions/uint32-array
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maximum: 2
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required:
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- brcm,pins
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allOf:
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- if:
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properties:
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compatible:
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contains:
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enum:
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- brcm,bcm2835-gpio
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- brcm,bcm2711-gpio
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then:
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properties:
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interrupts:
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maxItems: 5
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examples:
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- |
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gpio@2200000 {
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compatible = "brcm,bcm2835-gpio";
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reg = <0x2200000 0xb4>;
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interrupts = <2 17>, <2 19>, <2 18>, <2 20>, <2 21>;
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#gpio-cells = <2>;
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gpio-controller;
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#interrupt-cells = <2>;
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interrupt-controller;
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};
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