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

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Message-ID: <20130727085259.GA6207@netboy>
Date:	Sat, 27 Jul 2013 10:53:01 +0200
From:	Richard Cochran <richardcochran@...il.com>
To:	Jason Gunthorpe <jgunthorpe@...idianresearch.com>
Cc:	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>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Pawel Moll <Pawel.Moll@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Catalin Marinas <Catalin.Marinas@....com>,
	Domenico Andreoli <cavokz@...il.com>,
	"rob.herring@...xeda.com" <rob.herring@...xeda.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Olof Johansson <olof@...om.net>,
	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: DT bindings as ABI [was: Do we have people interested in device
 tree janitoring / cleanup?]

On Fri, Jul 26, 2013 at 11:15:24AM -0600, Jason Gunthorpe wrote:
> On Fri, Jul 26, 2013 at 06:54:33AM +0200, Richard Cochran wrote:
> > I too work on commercial embedded systems, and DT has proven to be
> > one gigantic *PITA*.
> 
> Why do you think our experiences are so different?

Here are a few recent examples:

* What happens when one wants to boot vanilla kernel on the beaglebone?

  http://www.spinics.net/lists/arm-kernel/msg198431.html

* Wanting already merged code to work is too much to ask.

  http://www.spinics.net/lists/linux-omap/msg79731.html

* When people try in good faith to conduct methodical boot tests,
  DT is working against them.

  http://www.spinics.net/lists/linux-omap/msg79960.html

Thanks,
Richard
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