Re: [PATCH 2/3] spi: dt-bindings: Add num-cs property for mpfs-spi

[Krzysztof Kozlowski <krzk@xxxxxxxxxx>]

On 02/05/2024 16:34, Prajna Rajendra Kumar wrote:
> The PolarFire SoC SPI controller supports multiple chip selects,but in
> the MSS, only one CS line is physically wired. To reflect this hardware
> limitation in the device tree, the binding enforces that the 'num-cs'
> property defaults to 1 and cannot exceed 1 unless additional
> chip select lines are explicitly defined using GPIO descriptors.
> 

You marked it as Fix for bug, but I don't understand where the bug is.
Do you describe above the issue or the solution?

> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: microchip,mpfs-spi
> +      not:
> +        required:
> +          - cs-gpios

I don't understand what you are expressing here. Did you actually
validate it that it achieves exactly what you want?

> +    then:
> +      properties:
> +        num-cs:
> +          default: 1
> +          maximum: 1
> +
>  unevaluatedProperties: false
>  
>  examples:

Best regards,
Krzysztof