Re: [PATCH 2/2] dt-bindings: serial: renesas,scif: Validate 'interrupts' and 'interrupt-names'

[Geert Uytterhoeven]

Hi Prabhakar,

On Thu, Mar 7, 2024 at 12:11 AM Prabhakar <prabhakar.csengg@xxxxxxxxx> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
>
> This commit adds support to validate the 'interrupts' and 'interrupt-names'
> properties for every supported SoC. This ensures proper handling and
> configuration of interrupt-related properties across supported platforms.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>

Thanks for your patch!

> --- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> +++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> @@ -82,38 +82,6 @@ properties:
>    reg:
>      maxItems: 1
>
> -  interrupts:
> -    oneOf:
> -      - items:
> -          - description: A combined interrupt
> -      - items:
> -          - description: Error interrupt
> -          - description: Receive buffer full interrupt
> -          - description: Transmit buffer empty interrupt
> -          - description: Break interrupt
> -      - items:
> -          - description: Error interrupt
> -          - description: Receive buffer full interrupt
> -          - description: Transmit buffer empty interrupt
> -          - description: Break interrupt
> -          - description: Data Ready interrupt
> -          - description: Transmit End interrupt

As the above three groups are increasing supersets, you can just use
a single "items" listing all 6 interrupts, and describe the first one
as "Error interrupt or single combined interrupt".  After that, the
SoC-specific logic at the end just needs to specify the appropriate
minItems/maxItems.

> -
> -  interrupt-names:
> -    oneOf:
> -      - items:
> -          - const: eri
> -          - const: rxi
> -          - const: txi
> -          - const: bri
> -      - items:
> -          - const: eri
> -          - const: rxi
> -          - const: txi
> -          - const: bri
> -          - const: dri
> -          - const: tei

Likewise, with "interrupt-names: false" below for the ones that don't
need it.

> -
>    clocks:
>      minItems: 1
>      maxItems: 4
> @@ -173,6 +141,91 @@ allOf:
>        required:
>          - resets
>
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - renesas,scif-r8a7742
> +              - renesas,scif-r8a7743
> +              - renesas,scif-r8a7744
> +              - renesas,scif-r8a7745
> +              - renesas,scif-r8a77470
> +              - renesas,scif-r8a774a1
> +              - renesas,scif-r8a774b1
> +              - renesas,scif-r8a774c0
> +              - renesas,scif-r8a774e1
> +              - renesas,scif-r8a7778
> +              - renesas,scif-r8a7779
> +              - renesas,scif-r8a7790
> +              - renesas,scif-r8a7791
> +              - renesas,scif-r8a7792
> +              - renesas,scif-r8a7793
> +              - renesas,scif-r8a7794
> +              - renesas,scif-r8a7795
> +              - renesas,scif-r8a7796
> +              - renesas,scif-r8a77961
> +              - renesas,scif-r8a77965
> +              - renesas,scif-r8a77970
> +              - renesas,scif-r8a77980
> +              - renesas,scif-r8a77990
> +              - renesas,scif-r8a77995
> +              - renesas,scif-r8a779a0
> +              - renesas,scif-r8a779f0
> +              - renesas,scif-r8a779g0

Please simplify using family-specific names:
  - renesas,rcar-gen1-scif
  - renesas,rcar-gen2-scif
  - renesas,rcar-gen3-scif
  - renesas,rcar-gen4-scif

> +    then:
> +      properties:
> +        interrupts:
> +          items:
> +            - description: A combined interrupt

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68korg

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