From mboxrd@z Thu Jan  1 00:00:00 1970
From: jason@lakedaemon.net (Jason Cooper)
Date: Sun, 27 Jan 2013 11:41:20 -0500
Subject: [PATCH] clk: mvebu: Do not gate ge0/1 and runit clocks on Kirkwood
In-Reply-To: <20130127164104.1b2e66e6@skate>
References: <1359226864-28811-1-git-send-email-gmbnomis@gmail.com>
 <20130126235037.GV1758@titan.lakedaemon.net>
 <20130127013131.GA2400@schnuecks.de> <5104FE5F.2040804@gmail.com>
 <20130127105654.GA23127@schnuecks.de> <51050B9E.8000605@gmail.com>
 <20130127152837.GI29973@lunn.ch> <20130127164104.1b2e66e6@skate>
Message-ID: <20130127164120.GA1758@titan.lakedaemon.net>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Sun, Jan 27, 2013 at 04:41:04PM +0100, Thomas Petazzoni wrote:
> Dear Andrew Lunn,
> 
> On Sun, 27 Jan 2013 16:28:37 +0100, Andrew Lunn wrote:
> 
> > I've been thinking the same, store the MAC address before turning the
> > clock off and restore it when enabling the clock. We have a need for
> > special clocks on kirkwood anyway for turning off the sata and pcie
> > PHYs. So adding special clocks for ethernet is not too big a deal.
> 
> At least on Armada 370/XP, U-Boot passes the MAC address through a
> special ATAG. Willy Tarreau has written some code to read this special
> ATAG and feed it into the Device Tree, so that we get the MAC address
> as set by U-Boot. I unfortunately haven't had the time to look at
> Willy's code and push it, but it does seem like an interesting solution.

Does this add on to ARM_ATAG_DTB_COMPAT [1]?  Perhaps APPENDED_DTB
should select it?

Maybe the answer is as simple as having the driver pull the mac address
from the dtb while ARM_ATAG_DTB_COMPAT is configured.

thx,

Jason.

[1] arch/arm/Kconfig:1970