linux-kernel - Re: [PATCH 04/15] pinctrl: sh-pfc: Initial R-Car M3-N support

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Message-ID: <20180214135306.GA23932@w540>
Date:   Wed, 14 Feb 2018 14:53:06 +0100
From:   jacopo mondi <jacopo@...ndi.org>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Jacopo Mondi <jacopo+renesas@...ndi.org>,
        Simon Horman <horms@...ge.net.au>,
        Magnus Damm <magnus.damm@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, linux-arm-kernel@...ts.infradead.org,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 04/15] pinctrl: sh-pfc: Initial R-Car M3-N support

Hi Geert,
   thanks for review

On Wed, Feb 14, 2018 at 02:37:08PM +0100, Geert Uytterhoeven wrote:
> Hi Jacopo,
>
> On Tue, Feb 13, 2018 at 10:45 AM, Jacopo Mondi
> <jacopo+renesas@...ndi.org> wrote:
> > Add initial PFC support for R-Car M3-N (r8a77965) SoC.
> > No groups or functions defined, just pin and registers enumeration.
> >
> > Signed-off-by: Jacopo Mondi <jacopo+renesas@...ndi.org>
>
> Thanks for your patch!
>
> Looks mostly OK to me.
> You do want to compare with pfc-r8a7796.c: all differences not related to
> SATA_DEVSL, FSCLK, DU_DOTCLKIN2/3, and PRESET are issues that were fixed
> recently in pfc-r8a7796.c, and should apply to pfc-r8a77965.c, too.
>

I have used the M3-W tables with the exception of the pins/groups you
mentioned, that are clearly marked as different in the datasheet. At
least, this was my intention :)

I used v4.15 M3-W PFC tables, should I look in v4.16-rc1 or in
renesas-drivers for updates?

> That leaves us with very few differences only, but it won't be trivial to have
> a combined M3-W/N PFC driver, I'm afraid.
>

Takes a certain degree of grep-foo to clearly highlight differences
between the two version. Do you have any script/tools you use to
compare PFC tables a bit more easily?

Thanks
  j

> 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