linux-kernel - Re: [RFC PATCH v2 5/6] spi: Add QuadSPI driver for Atmel SAMA5D2

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Message-ID: <20180801215733.4dfa3a95@bbrezillon>
Date:   Wed, 1 Aug 2018 21:57:33 +0200
From:   Boris Brezillon <boris.brezillon@...tlin.com>
To:     Mark Brown <broonie@...nel.org>
Cc:     Piotr Bugalski <bugalski.piotr@...il.com>,
        linux-spi@...r.kernel.org, David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Richard Weinberger <richard@....at>,
        linux-mtd@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Cyrille Pitchen <cyrille.pitchen@...rochip.com>,
        Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Piotr Bugalski <pbu@...ptera.com>
Subject: Re: [RFC PATCH v2 5/6] spi: Add QuadSPI driver for Atmel SAMA5D2

Hi Mark,

On Wed, 1 Aug 2018 18:27:47 +0100
Mark Brown <broonie@...nel.org> wrote:

> On Wed, Jun 27, 2018 at 03:16:08PM +0200, Piotr Bugalski wrote:
> > Kernel contains QSPI driver strongly tied to MTD and nor-flash memory.
> > New spi-mem interface allows usage also other memory types, especially
> > much larger NAND with SPI interface. This driver works as SPI controller
> > and is not related to MTD, however can work with NAND-flash or other
> > peripherals using spi-mem interface.  
> 
> This is fine from a SPI point of view

Cool. There are still 2 things I think should be addressed before
merging the driver:
1/ Fixing the SoB tag to match the author (problem reported by
   Alexandre)
2/ Getting this patch [1] merged and implementing the ->get_name() hook
   in this driver so that SPI NOR devs declared to the MTD layer keep
   the same name after the transition to spi-mem and mtdparts= passed on
   the cmdline keep working. Without this in place we're likely to
   break a few setups :-/.

> but I'd like to apply it directly
> to the SPI tree rather than ack it for merge via the MTD tree - can we
> work something out with a shared branch or something?

Sure, I can provide an immutable tag for you to pull and I'll add my
acks on those patches once the 2 things I mentioned above are
addressed.

Regards,

Boris

[1]https://patchwork.kernel.org/patch/10508693/