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f6bd99a2d2
Document trivial PWM on Argon40 Fan HAT, which is a RaspberryPi blower fan hat which can be controlled over I2C. Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Link: https://lore.kernel.org/r/20250629220757.936212-2-marek.vasut+renesas@mailbox.org Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
49 lines
921 B
YAML
49 lines
921 B
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/pwm/argon40,fan-hat.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Argon40 Fan HAT PWM controller
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maintainers:
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- Marek Vasut <marek.vasut+renesas@mailbox.org>
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description:
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The trivial PWM on Argon40 Fan HAT, which is a RaspberryPi blower fan
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hat which can be controlled over I2C, generates a fixed 30 kHz period
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PWM signal with configurable 0..100% duty cycle to control the fan
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speed.
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allOf:
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- $ref: pwm.yaml#
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properties:
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compatible:
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const: argon40,fan-hat
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reg:
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maxItems: 1
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"#pwm-cells":
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const: 3
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required:
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- compatible
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- reg
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additionalProperties: false
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examples:
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- |
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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pwm@1a {
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compatible = "argon40,fan-hat";
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reg = <0x1a>;
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#pwm-cells = <3>;
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};
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};
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