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|
# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/bcm/raspberrypi,bcm2835-firmware.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Raspberry Pi VideoCore firmware driver
maintainers:
- Eric Anholt <eric@anholt.net>
- Stefan Wahren <wahrenst@gmx.net>
select:
properties:
compatible:
contains:
const: raspberrypi,bcm2835-firmware
required:
- compatible
properties:
compatible:
items:
- const: raspberrypi,bcm2835-firmware
- const: simple-mfd
mboxes:
maxItems: 1
clocks:
type: object
additionalProperties: false
properties:
compatible:
const: raspberrypi,firmware-clocks
"#clock-cells":
const: 1
description: >
The argument is the ID of the clocks contained by the
firmware messages.
required:
- compatible
- "#clock-cells"
gpio:
type: object
additionalProperties: false
properties:
compatible:
const: raspberrypi,firmware-gpio
gpio-controller: true
"#gpio-cells":
const: 2
description:
The first cell is the pin number, and the second cell is used to
specify the gpio polarity (GPIO_ACTIVE_HIGH or GPIO_ACTIVE_LOW).
gpio-line-names:
minItems: 8
required:
- compatible
- gpio-controller
- "#gpio-cells"
reset:
type: object
additionalProperties: false
properties:
compatible:
const: raspberrypi,firmware-reset
"#reset-cells":
const: 1
description: >
The argument is the ID of the firmware reset line to affect.
required:
- compatible
- "#reset-cells"
pwm:
type: object
additionalProperties: false
properties:
compatible:
const: raspberrypi,firmware-poe-pwm
"#pwm-cells":
# See pwm.yaml in this directory for a description of the cells format.
const: 2
required:
- compatible
- "#pwm-cells"
required:
- compatible
- mboxes
additionalProperties: false
examples:
- |
firmware {
compatible = "raspberrypi,bcm2835-firmware", "simple-mfd";
mboxes = <&mailbox>;
firmware_clocks: clocks {
compatible = "raspberrypi,firmware-clocks";
#clock-cells = <1>;
};
expgpio: gpio {
compatible = "raspberrypi,firmware-gpio";
gpio-controller;
#gpio-cells = <2>;
};
reset: reset {
compatible = "raspberrypi,firmware-reset";
#reset-cells = <1>;
};
pwm: pwm {
compatible = "raspberrypi,firmware-poe-pwm";
#pwm-cells = <2>;
};
};
...
|
