linux-kernel - Re: [PATCH v2 1/3] clk: bcm2835: Add bindings for the auxiliary peripheral clock gates.

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Date:	Sat, 02 Jan 2016 10:14:37 -0800
From:	Eric Anholt <eric@...olt.net>
To:	Michael Turquette <mturquette@...libre.com>,
	Arnd Bergmann <arnd@...db.de>, Rob Herring <robh@...nel.org>
Cc:	Olof Johansson <olof@...om.net>,
	linux-clk <linux-clk@...r.kernel.org>,
	"Stephen Boyd \<sboyd\@codeaurora.org\>\, Emilio Lopez
	\<emilio\@elopez.com.ar\>\, Hans de Goede \<hdegoede\@redhat.com\>\,
	linux-clk \<linux-clk\@vger.kernel.org\>\, linux-arm-kernel" 
	<linux-arm-kernel@...ts.infradead.org>,
	linux-rpi-kernel@...ts.infradead.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Stephen Warren <swarren@...dotorg.org>,
	Lee Jones <lee@...nel.org>,
	Florian Fainelli <f.fainelli@...il.com>,
	Stephen Boyd <sboyd@...eaurora.org>,
	"devicetree\@vger.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH v2 1/3] clk: bcm2835: Add bindings for the auxiliary peripheral clock gates.

Michael Turquette <mturquette@...libre.com> writes:

> Hi Arnd,
>
> Quoting Arnd Bergmann (2015-12-30 01:29:02)
>> It's also ok to merge the header file and binding with either the dts file
>> changes or the driver and then do the other part the following release.
>> 
>> In the past, we've worked around the issue by merging the driver through
>> arm-soc, or by merging the dts changes through a driver tree, with the
>> appropriate Acks in each case. Both of those approaches work of course,
>> but the former always feels awkward to me as we are not using the right
>> maintainer path, and the latter approach tends to cause merge conflicts,
>> especially when multiple headers for different subsystems get added or
>> the dts files are added at the same time.
>> 
>> Having a shared branch for the header file is another way to do it, and
>> we can do that in some cases, but I'd prefer not to make it the default.
>
> Well, I'm thinking that an immutable branch isn't such a bad idea given
> that both you and Rob are OK with subsystems merging headers and binding
> descriptions.
>
> A while back Stephen Boyd and I started to use topic branches for every
> driver, all based on -rc1 and merging those into clk-next. This makes it
> trivial for us to push a shareable branch with minimal dependencies.
>
> So at least for the clk tree, how do you feel about us merging driver +
> header + binding description and then sharing our topic branch as-needed
> with arm-soc? We could even push our topic branches by default to cut
> down on coordinating over email back-and-forth.
>
> As an example, patch #1 from the Hi3519 series[0] includes the clk
> driver, binding description and a shared header. Any objection to me
> taking that patch as-is, based on -rc1, and pushing out that topic
> branch as clk-hi3519 to the clk git tree with the expectation that
> you'll just merge that if you need to?
>
> You can let me know if you've pulled it in, and then I won't rebase
> without consulting with the arm-soc folks first.
>
> Does this workflow agreement Solve All the Problems?
>
> (Note that the patch I referenced is still under review so the branch
> name I mentioned above doesn't exist yet. It is just an example)

For what it's worth, this is a nice workflow for me as a driver
developer.  I have a couple of .dts patches that ended up waiting this
cycle because I didn't have the shareable branches necessary.

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