Hello Marek, On Tue, Jun 17, 2025 at 02:28:01AM +0200, Marek Vasut wrote: > Document trivial PWM on Argon40 Fan HAT, which is a RaspberryPi > blower fan hat which can be controlled over I2C. > > Signed-off-by: Marek Vasut <marek.vasut+renesas@xxxxxxxxxxx> > --- > Cc: "Uwe Kleine-König" <ukleinek@xxxxxxxxxx> > Cc: Conor Dooley <conor+dt@xxxxxxxxxx> > Cc: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx> > Cc: Rob Herring <robh@xxxxxxxxxx> > Cc: devicetree@xxxxxxxxxxxxxxx > Cc: linux-pwm@xxxxxxxxxxxxxxx > Cc: linux-renesas-soc@xxxxxxxxxxxxxxx > --- > V2: Implement dedicated binding document > --- > .../bindings/pwm/argon40,fan-hat.yaml | 47 +++++++++++++++++++ > 1 file changed, 47 insertions(+) > create mode 100644 Documentation/devicetree/bindings/pwm/argon40,fan-hat.yaml > > diff --git a/Documentation/devicetree/bindings/pwm/argon40,fan-hat.yaml b/Documentation/devicetree/bindings/pwm/argon40,fan-hat.yaml > new file mode 100644 > index 000000000000..2725eee5328c > --- /dev/null > +++ b/Documentation/devicetree/bindings/pwm/argon40,fan-hat.yaml > @@ -0,0 +1,47 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/pwm/argon40,fan-hat.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Argon40 Fan HAT PWM controller > + > +maintainers: > + - Marek Vasut <marek.vasut+renesas@xxxxxxxxxxx> > + > +description: | > + The trivial PWM on Argon40 Fan HAT, which is a RaspberryPi blower fan > + hat which can be controlled over I2C, generates a fixed duty cycle PWM > + signal with configurable period to control the fan speed. Did you get that right? I would have expected a fixed period and the parameter modifying the duty cycle? > +allOf: > + - $ref: pwm.yaml# > + > +properties: > + compatible: > + const: argon40,fan-hat > + > + reg: > + maxItems: 1 > + > + "#pwm-cells": > + const: 2 const: 3 Best regards Uwe
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