linux-kernel - Re: [Ksummit-2013-discuss] DT bindings as ABI [was: Do we have people interested in device tree janitoring / cleanup?]

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Date:	Sat, 27 Jul 2013 07:04:08 +0200
From:	Richard Cochran <richardcochran@...il.com>
To:	Olof Johansson <olof@...om.net>
Cc:	Mark Brown <broonie@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"ksummit-2013-discuss@...ts.linuxfoundation.org" 
	<ksummit-2013-discuss@...ts.linuxfoundation.org>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Ian Campbell <ian.campbell@...rix.com>,
	Pawel Moll <Pawel.Moll@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Domenico Andreoli <cavokz@...il.com>,
	"rob.herring@...xeda.com" <rob.herring@...xeda.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Dave P Martin <Dave.Martin@....com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [Ksummit-2013-discuss] DT bindings as ABI [was: Do we have
 people interested in device tree janitoring / cleanup?]

On Fri, Jul 26, 2013 at 08:49:43AM -0700, Olof Johansson wrote:
> 
> Long term, final goal is likely to be close to what Russell is saying

Why is this a long term goal? Start today.

> -- nothing should go into the kernel tree unless the binding is in a
> fully stable state. However, we have a transitional period between now
> and then, and even when we're at the final state there will be need to
> have some sort of sandbox for development and test of future bindings.

Why not just set up a git tree right away?

> Dealing with all that, as well as the actual process for locking in
> bindings, is what needs to be sorted out.
> 
> I think we're all in agreement that bindings that change over time are
> nothing but pain, but we're arguing that in circles anyway.

No.

I keep saying, the bindings must be stable ABI, *today*.

You keep saying, maybe later, but until then we will make things up as
we go along.

Thanks,
Richard
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