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| author | Nicolas Saenz Julienne <nsaenzjulienne@suse.de> | 2021-01-18 13:32:42 +0100 |
|---|---|---|
| committer | Nicolas Saenz Julienne <nsaenzjulienne@suse.de> | 2021-03-22 17:59:52 +0100 |
| commit | a953e68ef2df657d8b65e16370e5808ec5819f23 (patch) | |
| tree | 5e34750b0a83b09ea3ebca7073455cc233881654 | |
| parent | 3b8ddff780b7d12e99ae39177f84b9003097777a (diff) | |
| download | linux-a953e68ef2df657d8b65e16370e5808ec5819f23.tar.bz2 | |
dt-bindings: pwm: Add binding for RPi firmware PWM bus
The PWM bus controlling the fan in RPi's official PoE hat can only be
controlled by the board's co-processor.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Rob Herring <robh@kernel.org>
| -rw-r--r-- | Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml | 20 | ||||
| -rw-r--r-- | include/dt-bindings/pwm/raspberrypi,firmware-poe-pwm.h | 13 |
2 files changed, 33 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml index a2c63c8b1d10..e3664eab0f6a 100644 --- a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml +++ b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml @@ -64,6 +64,21 @@ properties: - compatible - "#reset-cells" + pwm: + type: object + + 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" + additionalProperties: false required: @@ -87,5 +102,10 @@ examples: compatible = "raspberrypi,firmware-reset"; #reset-cells = <1>; }; + + pwm: pwm { + compatible = "raspberrypi,firmware-poe-pwm"; + #pwm-cells = <2>; + }; }; ... diff --git a/include/dt-bindings/pwm/raspberrypi,firmware-poe-pwm.h b/include/dt-bindings/pwm/raspberrypi,firmware-poe-pwm.h new file mode 100644 index 000000000000..27c5ce68847b --- /dev/null +++ b/include/dt-bindings/pwm/raspberrypi,firmware-poe-pwm.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2020 Nicolas Saenz Julienne + * Author: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> + */ + +#ifndef _DT_BINDINGS_RASPBERRYPI_FIRMWARE_PWM_H +#define _DT_BINDINGS_RASPBERRYPI_FIRMWARE_PWM_H + +#define RASPBERRYPI_FIRMWARE_PWM_POE 0 +#define RASPBERRYPI_FIRMWARE_PWM_NUM 1 + +#endif |