linux-kernel - Re: [PATCH] of/lib: Export fdt routines to modules

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Message-ID: <20131019014919.GB30244@codeaurora.org>
Date:	Fri, 18 Oct 2013 18:49:19 -0700
From:	Michael Bohan <mbohan@...eaurora.org>
To:	Rob Herring <robherring2@...il.com>
Cc:	David Daney <ddaney@...iumnetworks.com>,
	Pantelis Antoniou <panto@...oniou-consulting.com>,
	Guenter Roeck <linux@...ck-us.net>,
	David Gibson <david@...son.dropbear.id.au>,
	linux-kernel@...r.kernel.org, grant.likely@...retlab.ca,
	rob.herring@...xeda.com, ralf@...ux-mips.org,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	david.daney@...ium.com, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH] of/lib: Export fdt routines to modules

On Fri, Oct 18, 2013 at 04:20:09PM -0500, Rob Herring wrote:
> On 10/18/2013 02:32 PM, Michael Bohan wrote:
> > My preference is probably straight libfdt calls, but if others
> > think that unpacking is a better solution, I'm able to go that
> > route as well. My only concern there is that we provide a means
> > to detect invalid dtb image (ex. handle error codes) and also
> > free the device_node allocations once the device is released.
> 
> I think we need to understand what you are putting in the DT first.

That's understandable. Please see my response to Mark.

> Given there are other desired uses like overlays which need to add the
> necessary loading and unflattening support, a common solution is likely
> more desirable.

But by convention, would overlays allow for 'application
specific' data, or are they expected to meet the more rigid
requirements of a real Device Tree?

Thanks,
Mike

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