linux-kernel - Re: [PATCH 00/10] pinctrl: mvebu: remove hard-coded addresses from Dove pinctrl

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Date:	Tue, 25 Feb 2014 16:30:45 +0100
From:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
To:	Jason Cooper <jason@...edaemon.net>,
	Linus Walleij <linus.walleij@...aro.org>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...glemail.com>
CC:	Mark Rutland <mark.rutland@....com>, Andrew Lunn <andrew@...n.ch>,
	Russell King <linux@....linux.org.uk>,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Rob Landley <rob@...dley.net>,
	Kumar Gala <galak@...eaurora.org>,
	Gregory Clement <gregory.clement@...e-electrons.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
Subject: Re: [PATCH 00/10] pinctrl: mvebu: remove hard-coded addresses from
 Dove pinctrl

On 02/25/14 16:16, Jason Cooper wrote:
> On Tue, Feb 25, 2014 at 10:36:54AM +0100, Linus Walleij wrote:
>> On Mon, Feb 24, 2014 at 7:10 PM, Jason Cooper <jason@...edaemon.net> wrote:
>>> I've now created mvebu/pinctrl-dove for this series.  It's based on
>>> v3.14-rc1, and depends on mvebu/pinctrl (which depends on
>>> mvebu/pinctrl-3xx).
>>>
>>> I've kept this series in a separate branch in case we encounter an
>>> unforeseen problem with something in here.  Then this branch can be
>>> dropped, and /pinctrl-3xx and /pinctrl will still make it in.
>>>
>>> So, all patches except 3 and 4 are in mvebu/pinctrl-dove.  3 and 4 are
>>> in mvebu/dt.
>>
>> OK so what should I be pulling in first now?
>
> Of course I woke up this morning not happy with this :-/  Here's what it
> looks like currently:
>
>    /v3.14-rc1
>    |
> --+---+---+---+---+ mvebu/pinctrl-3xx
>    |               \
>    |---+---+---+---+---+---+---+ mvebu/pinctrl
>    \                           \
>     \---------------------------+---+---+---+ mvebu/pinctrl-dove
>
> Not to scale.
>
>
> I would prefer to do:
>
>    /v3.14-rc1
>    |
> --+---+---+---+---+ mvebu/pinctrl-cleanup
>    |               \
>    |----------------+--+---+---+ mvebu/pinctrl-3xx
>    \                \
>     \----------------+---+---+--+---+---+---+ mvebu/pinctrl-dove
>
> But this would mean moving some patches to branches other than what they
> were sent with.  The advantage is that /pinctrl-3xx and /pinctrl-dove
> don't depend on each other, and only depend on -cleanup.  Which is great
> if there is something wrong in either branch.
>
> Sebastian, I can cherry-pick the patches around, but you know the code
> better than any of us, do you foresee any problems with this scenario?

If Thomas agrees, I can rework Armada 375/38x pinctrl stubs to fit on
mvebu/pinctrl. That should allow you to have mvebu/pinctrl-dove
independent of mvebu/pinctrl-3xx.

Not a big deal, I'd just pick 375/38x patches from mvebu/pinctrl and 
squash them into mvebu/pinctrl-3xx. The only "issue" is that DT
documentation update patches from mvebu/pinctrl-dove have to be split
too.

I'll prepare the three new branches for you and Thomas to look at
today.

Sebastian

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