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: <20130728153546.GB5224@netboy>
Date:	Sun, 28 Jul 2013 17:35:46 +0200
From:	Richard Cochran <richardcochran@...il.com>
To:	"jonsmirl@...il.com" <jonsmirl@...il.com>
Cc:	Tomasz Figa <tomasz.figa@...il.com>,
	Arend van Spriel <arend@...adcom.com>,
	Olof Johansson <olof@...om.net>,
	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 Sun, Jul 28, 2013 at 10:09:57AM -0400, jonsmirl@...il.com wrote:
> 
> 3.z kernel is free to alter the schema. But it will have to supply the
> necessary quirks needed to keep those old dtb's functioning.

The quirks idea sounds okay to me, if it can really provide forward
compatibility. In practice, I doubt anyone will really spend the
effort to make this work. I think it would be much easier to make sure
the bindings are "future proof" in the first place.

Thanks,
Richard
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