Re: [PATCH 11/13] dt-bindings: lpspi: Update maximum num-cs value

[Rob Herring]

On Thu, Aug 14, 2025 at 05:06:51PM +0100, James Clark wrote:
> As mentioned in commit f46b06e62c86 ("spi: spi-fsl-lpspi: Read
> chip-select amount from hardware for i.MX93"), some devices support up
> to 3 chip selects so update the max value.
> 
> This isn't a fix or functional change because the devices with 3 chip
> selects support reading the number of chip selects from hardware, so the
> value wouldn't have needed to be set here. However the commit states
> that the DT could be used to overwrite any HW value, so the full range
> should be supported. This also avoids confusion for any readers about
> how many chip selects there are.

If reading the h/w gives you 3, when would the DT need to override that 
with 3? You only need an override for 2 or less.

> 
> Signed-off-by: James Clark <james.clark@xxxxxxxxxx>
> ---
>  Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml b/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml
> index a65a42ccaafe..ce7bd44ee17e 100644
> --- a/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml
> +++ b/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml
> @@ -64,7 +64,7 @@ properties:
>      description:
>        number of chip selects.
>      minimum: 1
> -    maximum: 2
> +    maximum: 3
>      default: 1
>  
>    power-domains:
> 
> -- 
> 2.34.1
>