linux-kernel - Re: [PATCH v2 06/12] ARM: dts: apq8064: Add MDP support

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Message-ID: <CAF6AEGtYQJVt+ETtgnhANJq8c8Z0CyQj=8UddGLL2FR+jpgXAg@mail.gmail.com>
Date:	Fri, 10 Apr 2015 17:01:51 -0400
From:	Rob Clark <robdclark@...il.com>
To:	Stephen Boyd <sboyd@...eaurora.org>
Cc:	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
	Kumar Gala <galak@...eaurora.org>,
	linux-arm-msm <linux-arm-msm@...r.kernel.org>,
	Bjorn Andersson <bjorn.andersson@...ymobile.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Russell King <linux@....linux.org.uk>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 06/12] ARM: dts: apq8064: Add MDP support

On Fri, Apr 10, 2015 at 4:21 PM, Stephen Boyd <sboyd@...eaurora.org> wrote:
>> That's true, These are existing bindings, so I can't change it as part
>> of this patch, However I will make another patch to fix this in both
>> drivers and DT for good reasons. Just noticed that bindings are not
>> consistent with the examples and the driver, which I guess is another
>> issue.
>
> Yes, the driver/binding should be fixed and then this patch can be
> corrected and applied. There are no implementations of the DT for this
> device upstream in the dts directory so there's no breakage or backwards
> incompatibility problem by fixing the driver/binding.


jfyi, some of the current bindings are the way they are to simplify
compatibility w/ downstream kernels which I unfortunately still have
to deal with.. ofc, the sooner I don't have to deal w/ downstream
kernels, the easier it gets to clean up ;-)

ofc, since the number of devices that can run upstream kernel but
don't have upstream dts files is approximately zero, this would be a
case were it would be useful to be able to mark certain bindings as
non-abi and refactor them later.

BR,
-R
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