netdev - Re: [PATCH v4 0/4] can: rcar_canfd: Add support for V3U flavor

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Date:   Thu, 10 Mar 2022 09:45:50 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Marc Kleine-Budde <mkl@...gutronix.de>
Cc:     Ulrich Hecht <uli+renesas@...nd.eu>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>, linux-can@...r.kernel.org,
        "Lad, Prabhakar" <prabhakar.mahadev-lad.rj@...renesas.com>,
        Biju Das <biju.das.jz@...renesas.com>,
        Wolfram Sang <wsa@...nel.org>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Wolfgang Grandegger <wg@...ndegger.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Vincent Mailhol <mailhol.vincent@...adoo.fr>,
        socketcan@...tkopp.net,
        Kieran Bingham <kieran.bingham@...asonboard.com>,
        Simon Horman <horms@...ge.net.au>
Subject: Re: [PATCH v4 0/4] can: rcar_canfd: Add support for V3U flavor

Hi Marc,

On Thu, Mar 10, 2022 at 9:26 AM Marc Kleine-Budde <mkl@...gutronix.de> wrote:
> On 09.03.2022 17:26:05, Ulrich Hecht wrote:
> > This adds CANFD support for V3U (R8A779A0) SoCs. The V3U's IP supports up
> > to eight channels and has some other minor differences to the Gen3 variety:
> >
> > - changes to some register offsets and layouts
> > - absence of "classic CAN" registers, both modes are handled through the
> >   CANFD register set
> >
> > This patch set tries to accommodate these changes in a minimally intrusive
> > way.
> >
> > This revision tries to address the remaining style issues raised by
> > reviewers. Thanks to Vincent, Marc and Simon for their reviews and
> > suggestions.
> >
> > It has been successfully tested remotely on a V3U Falcon board, but only
> > with channels 0 and 1. We were not able to get higher channels to work in
> > both directions yet. It is not currently clear if this is an issue with the
> > driver, the board or the silicon, but the BSP vendor driver only works with
> > channels 0 and 1 as well, so my bet is on one of the latter. For this
> > reason, this series only enables known-working channels 0 and 1 on Falcon.
>
> Should I take the whole series via linux-can/next?

Please don't take the DTS changes.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

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