From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S932539AbbJIPte (ORCPT <rfc822;w@1wt.eu>);
	Fri, 9 Oct 2015 11:49:34 -0400
Received: from mout.kundenserver.de ([212.227.17.13]:64727 "EHLO
	mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1754049AbbJIPtb (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Fri, 9 Oct 2015 11:49:31 -0400
From: Arnd Bergmann <arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
Cc: Mark Rutland <mark.rutland@arm.com>, Liviu Dudau <Liviu.Dudau@arm.com>,
        Jon Medhurst <tixy@linaro.org>,
        Ian Campbell <ijc+devicetree@hellion.org.uk>,
        linux-pci <linux-pci@vger.kernel.org>,
        Linus Walleij <linus.walleij@linaro.org>,
        Kumar Gala <galak@codeaurora.org>, Will Deacon <will.deacon@arm.com>,
        LKML <linux-kernel@vger.kernel.org>,
        device-tree <devicetree@vger.kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Bjorn Helgaas <bhelgaas@google.com>,
        Robin Murphy <robin.murphy@arm.com>
Subject: Re: [PATCH 3/4] arm64: Juno: Add support for the PCIe host bridge on Juno R1
Date: Fri, 09 Oct 2015 17:49:18 +0200
Message-ID: <40550712.xdsq5nNSTG@wuerfel>
User-Agent: KMail/4.11.5 (Linux/3.16.0-10-generic; KDE/4.11.5; x86_64; ; )
In-Reply-To: <20151009154408.GD21629@leverpostej>
References: <1444398323-17354-1-git-send-email-Liviu.Dudau@arm.com> <20151009141107.GD3394@e106497-lin.cambridge.arm.com> <20151009154408.GD21629@leverpostej>
MIME-Version: 1.0
Content-Transfer-Encoding: 7Bit
Content-Type: text/plain; charset="us-ascii"
X-Provags-ID: V03:K0:qdzjz6XylWks6tNgHwRsYXLYCsl0Mk2VC0h6zJUhhhnikU8kYa+
 ET6Bbp6JYw0ysma0AKVVGRtzqlZQEP8YNNNXfxwQHIxpp0dvgGeYPa9t10tzqqqduPgC/MP
 xF5kijJw1cDxWO076FnbgMgLFaRNRkuouKuUCq1alsOxxwW4spzaIuP1ZNEYcKepo/S2Ds/
 D1NXFlVVCGTFg0Kz55BKA==
X-UI-Out-Filterresults: notjunk:1;V01:K0:j2LTyNigLWo=:E4fXdYm2jnC4KvNpo3VNxA
 ucMH3Hil1r2eRcBTGX3mf6fDJ0hBg0vyq87X1et6a/yFG9LpFAHzkt12VAR1O5XPlyxcw5Cyc
 BKf8p6ouAwTXf3Amw0KEM9irW7jXys8+Bf53W+bvoePC7+ekb2EAsdNTJuItaiDrEyNFDc0z5
 qMpk64ksNXwurfNNf02yjoDQ0c0Qh3MNOZrLdWDcFpHsNIOpea6zlGQTEFEcfncoBQFtOOi3C
 QvCRd1jaCd5S15BMhnzaSAykgRdUYcDuGvpDeD8dhvJjqk+mqBrajQB/O6LJB/sMZWw2h7xP2
 EMJhE8XvRyzPWbqDY2Z4GhxnHjtqQoKja+qFQ6k2BXr3sxT4ZQzAdt6AB2m3AqMWqPEHPkY6/
 KwDCp7oak56Acr/BVHz7GfV0Sn0r+mWiNPPRXOYJY/HjnDb+NcvLlNsB5o9SdprpPcov2t1bw
 hF+XHSERyTJ41flUUWkXSleF4VESDWCdX7U/cPDjIGZPNoh1O2cDwGWyllGpvScR3Na2Dw7SL
 d4YzzeCA1cBvjz1uV1A500tkhI8AIrtN1hic4g9LH66B8xWXMT3FY4Jwo6jUAdXvjNEX/Z+bt
 cVRSeiBzDxvxf78D257idwmZNE8pIl1JRvvCoI6pnovqACcMUg5hNDTeSALlQMz6qzv0D3/ap
 jcg+6RrTnUxWOlzCbpIMhfw72F91owxIYATqCMz321ikaeueG42cqL+sPxNBwWBH30Q+bRPag
 Gje/PlUFIvgDLyIa
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Friday 09 October 2015 16:44:08 Mark Rutland wrote:
> On Fri, Oct 09, 2015 at 03:11:07PM +0100, Liviu Dudau wrote:
> > On Fri, Oct 09, 2015 at 08:54:33AM -0500, Rob Herring wrote:
> > Or maybe I can claim the use of the string on account on being the first on arm64 
> > 
> > I can add a vendor prefix if you want, but pci-host-generic is going to ignore it 
> > *because* it is trying to be a generic driver.
> 
> The point here is to have the string ready if we need it later, so it's
> fine that it's not used currently.
> 
> Rob's suggestion is that the compatible list should look something like:
> 
> compatible = "arm,juno-r1-pcie", "plda,xpressrich3", "pci-host-ecam-generic";
> 
> We can match on "pci-host-ecam-generic" for now (and hopefully forever),
> but if for some reason we need to special-case this host controller (or
> Juno's integration thereof), we can do that based on the compatible
> string.

Sounds good to me, it certainly can't hurt.

	Arnd