From: Daniel Mack <daniel@caiaq.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 3/3] smc911x: do net reset the chip if no EEPROM is connected
Date: Thu, 9 Apr 2009 02:08:38 +0200 [thread overview]
Message-ID: <20090409000838.GA22458@buzzloop.caiaq.de> (raw)
In-Reply-To: <200904081800.40917.vapier@gentoo.org>
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
next prev parent reply other threads:[~2009-04-09 0:08 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-08 11:23 [U-Boot] [PATCH 1/3] smc911x: write back the manually set MAC address Daniel Mack
2009-04-08 11:23 ` [U-Boot] [PATCH 2/3] smc911x: add support for LAN9220 Daniel Mack
2009-04-08 11:23 ` [U-Boot] [PATCH 3/3] smc911x: do net reset the chip if no EEPROM is connected Daniel Mack
2009-04-08 22:00 ` Mike Frysinger
2009-04-09 0:08 ` Daniel Mack [this message]
2009-04-09 3:57 ` Mike Frysinger
2009-04-21 11:13 ` Daniel Mack
2009-04-27 3:14 ` Mike Frysinger
2009-04-27 14:44 ` Daniel Mack
2009-04-27 15:56 ` Mike Frysinger
2009-04-27 19:05 ` Scott Wood
2009-04-23 5:36 ` [U-Boot] [PATCH 2/3] smc911x: add support for LAN9220 Ben Warren
2009-04-21 11:13 ` [U-Boot] [PATCH 1/3] smc911x: write back the manually set MAC address Daniel Mack
2009-04-21 11:38 ` Sascha Hauer
2009-04-21 11:44 ` Daniel Mack
2009-04-21 13:28 ` Ben Warren
2009-04-21 13:30 ` Daniel Mack
2009-04-23 5:36 ` Ben Warren
2009-05-21 5:03 ` Dirk Behme
2009-06-05 10:02 ` Wolfgang Denk
2009-05-05 20:01 ` Mike Frysinger
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