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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Message-ID: <20130727181709.GC4813@netboy>
Date:	Sat, 27 Jul 2013 20:17:09 +0200
From:	Richard Cochran <richardcochran@...il.com>
To:	David Lang <david@...g.hm>
Cc:	Mark Brown <broonie@...nel.org>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	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>,
	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>,
	Dave P Martin <Dave.Martin@....com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Ian Campbell <ian.campbell@...rix.com>
Subject: Re: [Ksummit-2013-discuss] DT bindings as ABI [was: Do we have
 people interested in device tree janitoring / cleanup?]

On Sat, Jul 27, 2013 at 10:57:09AM -0700, David Lang wrote:
> On Sat, 27 Jul 2013, Richard Cochran wrote:
> 
> >On Sat, Jul 27, 2013 at 11:40:18AM +0100, Mark Brown wrote:
> >>On Sat, Jul 27, 2013 at 10:48:26AM +0200, Richard Cochran wrote:
> >>
> >>>[ I disagree about the "more thought" part. The current discussion,
> >>>  coming years too late after the introduction of DT to ARM Linux, is
> >>>  contrary evidence enough. ]
> >>
> >>We did have exactly the same discussion when the DT transition was
> >>started - this isn't something that people only just realised might be
> >>an issue.  There was a deliberate decision to focus on getting the
> >>technology deployed to the point where it could be used as a straight
> >>replacement for board files and accept that sometimes the results won't
> >>be perfect and that we may need to rework as a result.
> >
> >Can you tell a bit more about this decision? When was it made? Who
> >made it? How was it made public?
> 
> I remember seeing some of the discussion on linux-kernel at the
> time. I believe there was also a LWN article.

I must have missed it on lkml, although I do try to keep an eye on
this topic. I did find

   http://lwn.net/Articles/414016/
   http://lwn.net/Articles/426606/

but no word about unstable bindings. Maybe this was decided by the
modern method of secret committee?

Thanks,
Richard
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