Re: [PATCH v2 3/4] dt-bindings: update google,cros-ec-pwm documentation

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On Thu, Mar 31, 2022 at 12:58:17PM +0000, Fabio Baltieri wrote:
> Update google,cros-ec-pwm node documentation to mention the
> google,use_pwm_type property.
> 
> Signed-off-by: Fabio Baltieri <fabiobaltieri@xxxxxxxxxxxx>
> ---
>  .../devicetree/bindings/pwm/google,cros-ec-pwm.yaml         | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pwm/google,cros-ec-pwm.yaml b/Documentation/devicetree/bindings/pwm/google,cros-ec-pwm.yaml
> index 4cfbffd8414a..9c895c990ed8 100644
> --- a/Documentation/devicetree/bindings/pwm/google,cros-ec-pwm.yaml
> +++ b/Documentation/devicetree/bindings/pwm/google,cros-ec-pwm.yaml
> @@ -19,6 +19,12 @@ description: |
>  properties:
>    compatible:
>      const: google,cros-ec-pwm
> +
> +  google,use-pwm-type:
> +    description:
> +      Use PWM types (CROS_EC_PWM_DT_<...>) instead of generic channels.
> +    type: boolean

Either do a new compatible string if the cell interpretation is mutually 
exclusive (channel number vs. type) or split the number space for the 
1st cell between type and channel number. IOW, set a bit (31?) to 
signify the number is a type, not a channel.

Rob



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