Re: [PATCH v2] dt-bindings: serial: renesas,scif: Document R9A09G057 support

[Geert Uytterhoeven]

Hi Prabhakar,

On Thu, Mar 7, 2024 at 12:48 PM Prabhakar <prabhakar.csengg@xxxxxxxxx> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
>
> Document support for the Serial Communication Interface with FIFO (SCIF)
> available in the Renesas RZ/V2H(P) (R9A09G057) SoC. The SCIF interface in
> the Renesas RZ/V2H(P) is similar to that available in the RZ/G2L
> (R9A07G044) SoC, with the only difference being that the RZ/V2H(P) SoC has
> three additional interrupts: one for Tx end/Rx ready and the other two for
> Rx and Tx buffer full, which are edge-triggered.
>
> No driver changes are required as generic compatible string
> "renesas,scif-r9a07g044" will be used as a fallback on RZ/V2H(P) SoC.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
> Reviewed-by: Fabrizio Castro <fabrizio.castro.jz@xxxxxxxxxxx>
> ---
> v1->v2
> * Added validation to check interrupts and interrupt-names count

Thanks for the update!

> --- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> +++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> @@ -77,6 +77,7 @@ properties:
>                - renesas,scif-r9a07g043      # RZ/G2UL and RZ/Five
>                - renesas,scif-r9a07g054      # RZ/V2L
>                - renesas,scif-r9a08g045      # RZ/G3S
> +              - renesas,scif-r9a09g057      # RZ/V2H(P)
>            - const: renesas,scif-r9a07g044   # RZ/G2{L,LC} fallback
>
>    reg:
> @@ -91,6 +92,9 @@ properties:
>        - description: Break interrupt
>        - description: Data Ready interrupt
>        - description: Transmit End interrupt
> +      - description: Transmit End/Data Ready interrupt
> +      - description: Receive buffer full interrupt (EDGE trigger)
> +      - description: Transmit buffer empty interrupt (EDGE trigger)
>
>    interrupt-names:
>      minItems: 4
> @@ -101,6 +105,9 @@ properties:
>        - const: bri
>        - const: dri
>        - const: tei
> +      - const: teidri

As the documentation calls this interrupt "ub1_tei_dri_n", I think
"tei-dri" would be a better name.

> +      - const: rxi-edge
> +      - const: txi-edge

The rest LGTM.

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