From mboxrd@z Thu Jan  1 00:00:00 1970
From: Daniel Mack <daniel@caiaq.de>
Date: Thu, 9 Apr 2009 02:08:38 +0200
Subject: [U-Boot] [PATCH 3/3] smc911x: do net reset the chip if
	no	EEPROM is connected
In-Reply-To: <200904081800.40917.vapier@gentoo.org>
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	<1239189819-26805-3-git-send-email-daniel@caiaq.de>
	<200904081800.40917.vapier@gentoo.org>
Message-ID: <20090409000838.GA22458@buzzloop.caiaq.de>
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On Wed, Apr 08, 2009 at 06:00:40PM -0400, Mike Frysinger wrote:
> On Wednesday 08 April 2009 07:23:39 Daniel Mack wrote:
> > On boards without EEPROMs, don't reset the chip on U-Boot's exit so that
> > the MAC set by environment settings can be used by the OS later.
> 
> that isnt how the MAC is passed to the OS ... this change is incorrect
> 
> the OS must be able to get the MAC address regardless of the state of the 
> network controller

Not if the MAC is stored in the volatile smc911x registers. Issuing a
soft reset flushes these values - if U-Boot does that, the OS has no
change getting them.

That's what I saw here and it is also stated in the datasheet.

Daniel