Subject: Re: [RFC] Device Tree Overlays Proposal (Was Re: capebus moving omap_devices to mach-omap2)
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From: Pantelis Antoniou <panto@antoniou-consulting.com>
In-Reply-To: <CACxGe6uXyTt_kr4=0ob+-ubgV9he+SfobLwux6X0m6y7yQU7EA@mail.gmail.com>
Date: Mon, 12 Nov 2012 13:34:13 +0200
Cc: Benoit Cousson <b-cousson@ti.com>, Rob Herring <robherring2@gmail.com>,
        Deepak Saxena <dsaxena@linaro.org>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Scott Wood <scottwood@freescale.com>, Tony Lindgren <tony@atomide.com>,
        Russ Dill <Russ.Dill@ti.com>, Felipe Balbi <balbi@ti.com>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        Koen Kooi <koen@dominion.thruhere.net>, Matt Porter <mporter@ti.com>,
        linux-omap@vger.kernel.org, Kevin Hilman <khilman@ti.com>,
        Paul Walmsley <paul@pwsan.com>, devicetree-discuss@lists.ozlabs.org
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To: Grant Likely <grant.likely@secretlab.ca>
Sender: linux-kernel-owner@vger.kernel.org
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Hi Grant,

On Nov 9, 2012, at 10:33 PM, Grant Likely wrote:

> On Wed, Nov 7, 2012 at 11:02 AM, Pantelis Antoniou
> <panto@antoniou-consulting.com> wrote:
>> On Nov 7, 2012, at 11:19 AM, Benoit Cousson wrote:
>>> Maybe some extra version match table can just be passed during the board machine_init
>>> 
>>>      of_platform_populate(NULL, omap_dt_match_table, NULL, NULL, panda_version_match_table);
>>> 
>> 
>> Would we need explicit of_platform_populate calls if we have node modification notifiers?
>> In that case the notifier would pick it up automatically, and can do the per
>> version matching internally.
> 
> There still needs to be something to register "everything below this
> node is interesting" which is exactly what of_platform_populate() does
> now. I see the notifiers being used by the of_platform_populate
> backend to know when nodes have been created (or destroyed).
> 
> g.

I see. So of_platform_populate could just register the notifier and
not do the tree walk itself. Perhaps the name is a bit misleading then?

Regards

-- Pantelis

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