linux-kernel - Re: [PATCH v5 1/2] spi: Add Renesas R-Car Gen3 RPC-IF SPI controller driver

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Date:   Wed, 9 Jan 2019 19:49:37 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Cc:     Mason Yang <masonccyang@...c.com.tw>,
        Mark Brown <broonie@...nel.org>,
        Marek Vasut <marek.vasut@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-spi <linux-spi@...r.kernel.org>,
        Boris Brezillon <boris.brezillon@...tlin.com>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        juliensu@...c.com.tw, Simon Horman <horms@...ge.net.au>,
        zhengxunli@...c.com.tw
Subject: Re: [PATCH v5 1/2] spi: Add Renesas R-Car Gen3 RPC-IF SPI controller driver

Hi Sergei,

On Wed, Jan 9, 2019 at 7:47 PM Sergei Shtylyov
<sergei.shtylyov@...entembedded.com> wrote:
> On 01/08/2019 07:16 AM, Mason Yang wrote:
> > Add a driver for Renesas R-Car Gen3 RPC-IF SPI controller.
> >
> > Signed-off-by: Mason Yang <masonccyang@...c.com.tw>
>
>    You now need to add:
>
> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>

> > --- a/drivers/spi/Kconfig
> > +++ b/drivers/spi/Kconfig
> > @@ -544,6 +544,12 @@ config SPI_RSPI
> >       help
> >         SPI driver for Renesas RSPI and QSPI blocks.
> >
> > +config SPI_RENESAS_RPC_IF
>
>    Since the driver is called without -IF suffix, I wouldn't use it in the
> Kconfig name either, the following is enough:
>
> > +     tristate "Renesas R-Car Gen3 RPC-IF SPI controller"
> > +     depends on ARCH_RENESAS || COMPILE_TEST
>
>    Judging on the compilation error reported by the 0-day bot about readq(),
> we now need to depend on 64BIT or something...

IIRC, this hardware block is also used on RZ/A, which is 32-bit.

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