Re: [PATCH 1/2] dt-bindings: iio: health: maxim,max30102: add max30101

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On Thu, 21 Mar 2024 19:33:48 +0100
Javier Carrasco <javier.carrasco.cruz@xxxxxxxxx> wrote:

> The Maxim max30101 irs the replacement for the max30105, which is no
> longer recommended for future designs.
> 
> The max30101 does not require new properties, and it can be described
> with the existing ones for the max30105.
> 
> Signed-off-by: Javier Carrasco <javier.carrasco.cruz@xxxxxxxxx>

Given there were no driver changes, is it fully compatible?
i.e. Should we have a fallback compatible here?

properties:
  compatible:
    oneOf:
       - items:
           - const: maxim,max30101
           - const: maxim,max30105
       - enum:
           - maxim,max30102
           - maxim,max30105

So that a DTS file could use
compatible = "maxim,max30101", "maxim,max30105"
and work with older kernels as well as new ones that understand the new ID?

> ---
>  Documentation/devicetree/bindings/iio/health/maxim,max30102.yaml | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/iio/health/maxim,max30102.yaml b/Documentation/devicetree/bindings/iio/health/maxim,max30102.yaml
> index c13c10c8d65d..0e455809340f 100644
> --- a/Documentation/devicetree/bindings/iio/health/maxim,max30102.yaml
> +++ b/Documentation/devicetree/bindings/iio/health/maxim,max30102.yaml
> @@ -4,7 +4,7 @@
>  $id: http://devicetree.org/schemas/iio/health/maxim,max30102.yaml#
>  $schema: http://devicetree.org/meta-schemas/core.yaml#
>  
> -title: Maxim MAX30102 heart rate and pulse oximeter and MAX30105 particle-sensor
> +title: Maxim MAX30101/2 heart rate and pulse oximeter and MAX30105 particle-sensor
>  
>  maintainers:
>    - Matt Ranostay <matt.ranostay@xxxxxxxxxxxx>
> @@ -12,6 +12,7 @@ maintainers:
>  properties:
>    compatible:
>      enum:
> +      - maxim,max30101
>        - maxim,max30102
>        - maxim,max30105
>  
> 





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