From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <olof@lixom.net>
Received: from mail.lixom.net (mail.lixom.net [66.141.50.11])
	(using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
	(Client did not present a certificate)
	by ozlabs.org (Postfix) with ESMTPS id 5D927B7D81
	for <linuxppc-dev@ozlabs.org>; Sun, 13 Jun 2010 08:15:57 +1000 (EST)
Date: Sat, 12 Jun 2010 17:15:54 -0500
From: Olof Johansson <olof@lixom.net>
To: Grant Likely <grant.likely@secretlab.ca>
Subject: Re: Request review of device tree documentation
Message-ID: <20100612221554.GA17876@lixom.net>
References: <AANLkTilK4YkRMJqlcRDOAlGBzpdlZuSo9NF5NrRNocHT@mail.gmail.com>
	<33BD8E86-9397-432A-97BF-F154812C157B@digitaldans.com>
	<AANLkTilv6TtPZs0DAwd8JlSV_J3VvMsvtVVOOeQauOIn@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
In-Reply-To: <AANLkTilv6TtPZs0DAwd8JlSV_J3VvMsvtVVOOeQauOIn@mail.gmail.com>
Cc: microblaze-uclinux@itee.uq.edu.au,
	devicetree-discuss <devicetree-discuss@lists.ozlabs.org>,
	linuxppc-dev <linuxppc-dev@ozlabs.org>, Mitch Bradley <wmb@firmworks.com>,
	Dan Malek <ppc6dev@digitaldans.com>,
	Jeremy Kerr <jeremy.kerr@canonical.com>
List-Id: Linux on PowerPC Developers Mail List <linuxppc-dev.lists.ozlabs.org>
List-Unsubscribe: <https://lists.ozlabs.org/options/linuxppc-dev>,
	<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=unsubscribe>
List-Archive: <http://lists.ozlabs.org/pipermail/linuxppc-dev>
List-Post: <mailto:linuxppc-dev@lists.ozlabs.org>
List-Help: <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=help>
List-Subscribe: <https://lists.ozlabs.org/listinfo/linuxppc-dev>,
	<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe>

On Sat, Jun 12, 2010 at 12:53:59AM -0600, Grant Likely wrote:

> I also changed the property in the cpu nodes from model to compatible
> so that the exact CPU version can be specified.  This isn't actually
> in any spec anywhere, but I need something to properly identify the
> different ARM cores.

I don't see why this has to be in the device tree. It's not there on PPC.
The exact CPU version is found through the PVR register on PPC, ARM also
has cpu version and feature registers for runtime probing.


-Olof