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

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Message-ID: <CAMuHMdW0MxqxRwULhLsRtnYXYK8NYxq-uU7E2BscbvPh3axYFg@mail.gmail.com>
Date: Wed, 6 Mar 2024 10:53:00 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Prabhakar <prabhakar.csengg@...il.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Jiri Slaby <jirislaby@...nel.org>, 
	Rob Herring <robh+dt@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	Magnus Damm <magnus.damm@...il.com>, linux-kernel@...r.kernel.org, 
	linux-serial@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-renesas-soc@...r.kernel.org, 
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>, 
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH] dt-bindings: serial: renesas,scif: Document R9A09G057 support

Hi Prabhakar,

Thanks for your patch!

On Tue, Mar 5, 2024 at 6:16 PM Prabhakar <prabhakar.csengg@...il.com> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
>
> 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.

If you declare SCIF on RZ/V2H compatible with SCIF on RZ/G2L, you
state that the current driver works fine (but perhaps suboptimal),
without adding support for the extra 3 interrupts?

Gr{oetje,eeting}s,

                        Geert

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