linux-kernel - Re: [PATCH 3/6] gpio: dt-bindings: Add documentation for gpio controllers on Armada 7K/8K

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Date:   Wed, 31 May 2017 12:02:59 +0200
From:   Gregory CLEMENT <gregory.clement@...e-electrons.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Mike Turquette <mturquette@...libre.com>,
        Alexandre Courbot <gnurou@...il.com>,
        "linux-gpio\@vger.kernel.org" <linux-gpio@...r.kernel.org>,
        "linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
        Jason Cooper <jason@...edaemon.net>,
        Andrew Lunn <andrew@...n.ch>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
        "linux-arm-kernel\@lists.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "devicetree\@vger.kernel.org" <devicetree@...r.kernel.org>,
        Russell King <rmk+kernel@...linux.org.uk>,
        Nadav Haklai <nadavh@...vell.com>,
        Kostya Porotchkin <kostap@...vell.com>,
        Neta Zur Hershkovits <neta@...vell.com>,
        Marcin Wojtas <mw@...ihalf.com>,
        Omri Itach <omrii@...vell.com>,
        Shadi Ammouri <shadi@...vell.com>
Subject: Re: [PATCH 3/6] gpio: dt-bindings: Add documentation for gpio controllers on Armada 7K/8K

Hi Rob,
 
 On mer., mai 31 2017, Rob Herring <robh@...nel.org> wrote:

> On Mon, May 29, 2017 at 10:08:16AM +0200, Linus Walleij wrote:
>> On Tue, May 23, 2017 at 3:06 PM, Gregory CLEMENT
>> <gregory.clement@...e-electrons.com> wrote:
>> >  On mar., mai 23 2017, Linus Walleij <linus.walleij@...aro.org> wrote:
>> 
>> >> Please rebase and resend the rest of the patches.
>> >
>> > Actually I was wrong with my assumption that there was no dependency.
>> > For the binding documentation there is dependecy accross the series I
>> > sent.
>> >
>> > This patch depends on "pinctrl: dt-bindings: add documentation for AP806
>> > pin controllers" [1] and "pinctrl: dt-bindings: add documentation for
>> > CP110 pin controllers" [3] from the series "Add support for the pin
>> > controllers on the Marvell Armada 7K/8K".
>> >
>> > As you are maintainer of both gpio and pinctrl subsystem it will be easy
>> > to resolv.
>> 
>> Please send all patches in one big series in that case, so I can apply
>> them all to a branch and merge that branch into both trees.
>> 
>> > But these last patches depend also on "clk: mvebu: ap806: introduce a
>> > new binding" [3] in the clock series "Improve ap806 clk support on
>> > Marvell Armada 7K/8K" and on "clk: mvebu: cp110: introduce a new
>> > binding" [4] in the clock series "Improve cp110 clk support on Marvell
>> > Armada 7K/8K".
>> 
>> That sounds messy.
>> 
>> > So for these particular patches, either I rebase them on the v4.12-rc2
>> > and there will be a small merge conflict during the merge window for
>> > v4.13, or we can ask a stable branch with only these few patches (I am
>> > adding the clock maintainer to this email).
>> >
>> > If we chose this last option I can split the clock patches to have patch
>> > modifying only the binding documentation.
>> 
>> I think you can make a patch just modifying the binding documentation
>> and then apply that patch to *both* trees, just make sure the patch
>> is *final* and not applied in different versions in clk and pinctrl.
>
> I thought we try to avoid doing that.
>
>> I think cross-tree branches for documentation clashes is too much
>> bureaucracy.
>
> I can just take all the doc patches separately. Or you can take the 
> clock one too.

If you can take all the doc patches I think we will managed to solve the
issue in a efficient way. So I am going to send a new version of the
clock series by splitting the "clk: mvebu: *: introduce a new binding"
patches so you will be able to only pick the doc part.

Thanks!

Gregory


>
>> Make sure your clock patch is finalized and preferably also applied
>> to the clk tree then put it in the bottom of the patch set you send
>> to me as well and I will proceed like above.
>> 
>> Yours,
>> Linus Walleij

-- 
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com