From: Sascha Hauer <s.hauer@pengutronix.de>
To: "Eric Bénard" <eric@eukrea.com>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH 12/16] fec_imx: restart aneg at open and not at init
Date: Fri, 18 May 2012 10:40:30 +0200 [thread overview]
Message-ID: <20120518084030.GO30400@pengutronix.de> (raw)
In-Reply-To: <20120517213257.5ab8d9b5@eb-e6520>
On Thu, May 17, 2012 at 09:32:57PM +0200, Eric Bénard wrote:
> Hi Sascha,
>
> Le Thu, 17 May 2012 19:36:19 +0200,
> Sascha Hauer <s.hauer@pengutronix.de> a écrit :
> > On Thu, May 17, 2012 at 05:46:14PM +0200, Eric Bénard wrote:
> > > else we can get a 1 second timeout at each boot since
> > > "6cbecc4 net: miidev: properly check for MII reset"
> >
> > I had this issue aswell on the babbage board. It turned out that this
> > was really an issue in the initialization order. On the babbage the fec
> > was registered before power was applied to the phy. Looking at the
> > eukrea mx51 code it seems that you reset the phy after you have
> > registered the fec. I suggest that you change the order instead of
> > applying this patch.
> >
> in fact I met the problem on cpuimx25 & cpuimx35 (because a wrong PHY
> address was set in the board configuration) so I don't have the problem
> anymore.
> But I think launching the autonegotiation during the boot is not
> necessary and can be a source of time loss.
Maybe we should do some measurements. The original intention was that we
start autonegotiation during init time so that it is already done when
we actually use the device.
Sascha
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next prev parent reply other threads:[~2012-05-18 8:40 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-17 15:46 [PATCH 01/16] eukrea_cpuimx25: workaround ENGcm09152 Eric Bénard
2012-05-17 15:46 ` [PATCH 02/16] eukrea_cpuimx25: add display choice in environment Eric Bénard
2012-05-17 15:46 ` [PATCH 03/16] eukrea_cpuimx25: update defconfig Eric Bénard
2012-05-17 15:46 ` [PATCH 04/16] eukrea_cpuimx35: add display choice in environment Eric Bénard
2012-05-17 15:46 ` [PATCH 05/16] eukrea_cpuimx35: update defconfig Eric Bénard
2012-05-17 15:46 ` [PATCH 06/16] eukrea_cpuimx51: updated env Eric Bénard
2012-05-17 15:46 ` [PATCH 07/16] eukrea_cpuimx51: update defconfig Eric Bénard
2012-05-17 15:46 ` [PATCH 08/16] eukrea_cpuimx25: use switch action to launch usbserial or dfu Eric Bénard
2012-05-17 15:46 ` [PATCH 09/16] eukrea_cpuimx35: " Eric Bénard
2012-05-17 15:46 ` [PATCH 10/16] fs/tftp: depend on NET_TFTP Eric Bénard
2012-05-17 17:54 ` Sascha Hauer
2012-05-26 9:43 ` Jean-Christophe PLAGNIOL-VILLARD
2012-05-31 18:24 ` Sascha Hauer
2012-05-17 15:46 ` [PATCH 11/16] iim: don't try to set ethaddr when NET is not selected Eric Bénard
2012-05-17 17:40 ` Sascha Hauer
2012-05-17 15:46 ` [PATCH 12/16] fec_imx: restart aneg at open and not at init Eric Bénard
2012-05-17 17:36 ` Sascha Hauer
2012-05-17 19:32 ` Eric Bénard
2012-05-18 8:40 ` Sascha Hauer [this message]
2012-05-17 15:46 ` [PATCH 13/16] eukrea_cpuimx25: fix PHY address Eric Bénard
2012-05-17 15:46 ` [PATCH 14/16] eukrea_cpuimx35: " Eric Bénard
2012-05-17 17:42 ` Sascha Hauer
2012-05-17 19:33 ` Eric Bénard
2012-05-17 15:46 ` [PATCH 15/16] eukrea_cpuimx25&35: update init_board Eric Bénard
2012-05-17 15:46 ` [PATCH 16/16] eukrea_cpuimx25&35: update defconfig Eric Bénard
2012-05-17 17:45 ` Sascha Hauer
2012-05-17 19:34 ` Eric Bénard
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