Re: [PATCH 06/14] spi: dt-bindings: dw-apb-ssi: update spi-{r,t}x-bus-width for dwc-ssi

[Geert Uytterhoeven]

Hi Conor,

On Sat, Jun 18, 2022 at 2:32 PM Conor Dooley <mail@xxxxxxxxxxx> wrote:
> From: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
>
> snps,dwc-ssi-1.01a has a single user - the Canaan k210, which uses a
> width of 4 for spi-{r,t}x-bus-width. Update the binding to reflect
> this.
>
> Signed-off-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>

Thanks for your patch!

> --- a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
> +++ b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
> @@ -135,19 +135,41 @@ properties:
>        of the designware controller, and the upper limit is also subject to
>        controller configuration.
>
> -patternProperties:
> -  "^.*@[0-9a-f]+$":
> -    type: object
> -    properties:
> -      reg:
> -        minimum: 0
> -        maximum: 3
> -
> -      spi-rx-bus-width:
> -        const: 1
> -
> -      spi-tx-bus-width:
> -        const: 1
> +if:
> +  properties:
> +    compatible:
> +      contains:
> +        const: snps,dwc-ssi-1.01a
> +
> +then:
> +  patternProperties:
> +    "^.*@[0-9a-f]+$":
> +      type: object
> +      properties:
> +        reg:
> +          minimum: 0
> +          maximum: 3
> +
> +        spi-rx-bus-width:
> +          const: 4
> +
> +        spi-tx-bus-width:
> +          const: 4

These two also depend on the board (SPI device + wiring).
So all of [1, 2, 4] are valid values.

> +
> +else:
> +  patternProperties:
> +    "^.*@[0-9a-f]+$":
> +      type: object
> +      properties:
> +        reg:
> +          minimum: 0
> +          maximum: 3
> +
> +        spi-rx-bus-width:
> +          const: 1
> +
> +        spi-tx-bus-width:
> +          const: 1
>
>  unevaluatedProperties: false

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds