linux-kernel - Re: [PATCH v6 0/3] spi-nor: Add support for Intel SPI serial flash controller

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Message-ID: <20161206094525.GA25385@dell.home>
Date:   Tue, 6 Dec 2016 09:45:25 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Cyrille Pitchen <cyrille.pitchen@...el.com>
Cc:     Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Richard Weinberger <richard@....at>,
        Brian Norris <computersforpeace@...il.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Peter Tyser <ptyser@...-inc.com>, key.seong.lim@...el.com,
        linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org
Subject: Re: [PATCH v6 0/3] spi-nor: Add support for Intel SPI serial flash
 controller

On Mon, 05 Dec 2016, Cyrille Pitchen wrote:

> Le 05/12/2016 à 17:31, Mika Westerberg a écrit :
> > On Mon, Dec 05, 2016 at 02:33:12PM +0100, Marek Vasut wrote:
> >> On 12/05/2016 12:27 PM, Mika Westerberg wrote:
> >>> On Mon, Nov 28, 2016 at 03:06:23PM +0300, Mika Westerberg wrote:
> >>>> This is 6th iteration of the series. You can find the previous versions
> >>>> archived on:
> >>>>
> >>>>   v5: https://lwn.net/Articles/706363/
> >>>>   v4: https://lwn.net/Articles/703773/
> >>>>   v3: https://lwn.net/Articles/697231/
> >>>>   v2: http://lists.infradead.org/pipermail/linux-mtd/2016-June/068277.html
> >>>>   v1: https://lkml.org/lkml/2016/6/14/269
> >>>>
> >>>> This patch series adds support for the Intel SPI serial flash controller
> >>>> found on many recent Intel CPUs including Baytrail and Braswell. This
> >>>> driver makes it possible to access the BIOS and other platform data which
> >>>> is stored on the SPI serial flash. It is also possible to upgrade the BIOS
> >>>> using this driver if it has not been protected by special hardware bits.
> >>>>
> >>>> The patch [1/3] includes documentation how to upgrade BIOS on MinnowBoard
> >>>> MAX.
> >>>>
> >>>> Since poking the SPI serial flash can brick the machine, this driver can
> >>>> only be enabled when CONFIG_EXPERT=y and even then it will remain read-only
> >>>> unless instructed othwerwise by module parameter.
> >>>
> >>> Hi Lee,
> >>>
> >>> I think we have enough acks from the MTD maintainers. I wonder if you
> >>> could merge this series via your MFD tree?
> >>>
> >> Ideally you'd merge 1/3 via MTD and 2,3/3 via MFD, but I'm not sure if
> >> that is possible and if that is a sensible thing to do.
> > 
> > There is a dependency between patches 1 and 2 (and 3) so they should be
> > merged together to avoid build errors. I'm fine if they go via either
> > tree as long as someone picks them up ;-)
> > 
> 
> we can take it in the mtd: spi-nor: tree if you want, just let us know
> whether it's fine with you or if you prefer to take it from mtd.

I'm happy either way.  However if you take them, I will require a
pull-request to an immutable branch containing only these patches.

If I take them, it won't be until v4.11, since we are half way though
-rc8 already and I would like them to soak in -next for at least a
couple of weeks.

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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