linux-kernel - Re: [PATCH] PCI: mvebu: Restrict build to 32-bit ARM

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Message-ID: <87egcaqe89.fsf@free-electrons.com>
Date:	Thu, 18 Feb 2016 15:34:30 +0100
From:	Gregory CLEMENT <gregory.clement@...e-electrons.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-arm-kernel@...ts.infradead.org,
	Thierry Reding <thierry.reding@...il.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Andrew Lunn <andrew@...n.ch>,
	Jason Cooper <jason@...edaemon.net>, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-next@...r.kernel.org,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
Subject: Re: [PATCH] PCI: mvebu: Restrict build to 32-bit ARM

Hi Arnd,
 
 On jeu., févr. 18 2016, Arnd Bergmann <arnd@...db.de> wrote:

> On Thursday 18 February 2016 14:32:10 Thierry Reding wrote:
>> From: Thierry Reding <treding@...dia.com>
>> 
>> This driver uses PCI glue that is only available on 32-bit ARM. This
>> used to work fine as long as ARCH_MVEBU and ARCH_DOVE were exclusively
>> 32-bit, but that's changed now, with ARCH_MVEBU also being available
>> on 64-bit ARM.
>> 
>> Signed-off-by: Thierry Reding <treding@...dia.com>
>
> Looks fine as a temporary workaround, but I think what we really want to
> do here is to remove the dependency, as the new ARM64 platforms are going
> to need this driver anyway.

Actually the mvebu ARM64 platform we know about (Armada 3700, 7K and
8K), won't use the same controller. A7K/A8K will use a synopsis IP and
Armada 3700 a new Marvell IP.

So for me depending on ARM32 is enough.

Gregory

-- 
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com