Re: [PATCH v2 1/2] dt-bindings: hwmon: amc6821: add PWM polarity

[Rob Herring <robh@kernel.org>]

On Mon, Feb 24, 2025 at 07:08:00PM +0100, Francesco Dolcini wrote:
> From: Francesco Dolcini <francesco.dolcini@toradex.com>
> 
> Add property to describe the PWM-Out pin polarity.

Why doesn't the invert support in the pwm binding work for you? Yes, I 
read the discussion, but don't remember the conclusion and you need to 
justify it here.

> 
> Link: https://www.ti.com/lit/gpn/amc6821
> Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
> ---
> v2: no changes
> v1: https://lore.kernel.org/all/20250218165633.106867-2-francesco@dolcini.it/
> ---
>  Documentation/devicetree/bindings/hwmon/ti,amc6821.yaml | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/hwmon/ti,amc6821.yaml b/Documentation/devicetree/bindings/hwmon/ti,amc6821.yaml
> index 5d33f1a23d03..11604aa41b3e 100644
> --- a/Documentation/devicetree/bindings/hwmon/ti,amc6821.yaml
> +++ b/Documentation/devicetree/bindings/hwmon/ti,amc6821.yaml
> @@ -28,6 +28,14 @@ properties:
>    i2c-mux:
>      type: object
>  
> +  ti,pwm-inverted:
> +    type: boolean
> +    description:
> +      Set to make the PWM-Out pin go high (with an external pull-up resistor)
> +      for 100% duty cycle (suitable for driving the fan using a NMOS device),
> +      when not set the PWM-Out pin goes low for 100% duty cycle (suitable for
> +      driving the fan using a PMOS device).
> +
>  required:
>    - compatible
>    - reg
> -- 
> 2.39.5
>