linux-kernel - Re: [RFC] [PATCH] Device Tree on ARM platform

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Date:	Fri, 29 May 2009 09:52:38 +0200
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Grant Likely <grant.likely@...retlab.ca>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Russell King <rmk+lkml@....linux.org.uk>,
	devicetree-discuss <devicetree-discuss@...abs.org>,
	linux-kernel@...r.kernel.org, Timur Tabi <timur@...escale.com>,
	Scott Wood <scottwood@...escale.com>,
	Janboe Ye <yuan-bo.ye@...orola.com>,
	linux-arm-kernel@...ts.arm.linux.org.uk
Subject: Re: [RFC] [PATCH] Device Tree on ARM platform

On Fri, May 29, 2009 at 10:51:14AM +1000, Benjamin Herrenschmidt wrote:
> On Thu, 2009-05-28 at 17:04 +0200, Sascha Hauer wrote:
> > 
> > We normally hide these subtle details behind a baseboard= kernel
> > parameter. I agree with you that it's far better to have a
> > standardized
> > way to specify this. For my taste the oftree is too bloated for this
> > purpose.
> 
> Define "bloated" ?

I don't mean bloated in terms of kbytes but bloated in terms of complex
code used to parse the device tree. I more than once put information in
the device tree and wondered where this information got lost on the way
to the driver where I wanted to use it. Back on ARM I was very happy to
just have a simple board file which is easier for me to understand and
maintain.
Of course this can be solved with /me learning more about the device
tree, that's why I said 'for my taste'.

Sascha

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