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From: Eugene Surovegin <ebs@ebshome.net>
To: J?rn Engel <joern@wohnheim.fh-wedel.de>
Cc: Netdev <netdev@oss.sgi.com>,
	Embedded PPC Linux list <linuxppc-embedded@ozlabs.org>
Subject: Re: [RFC] Patch to Abstract Ethernet PHY support (using driver model)
Date: Thu, 13 Jan 2005 17:00:16 -0800	[thread overview]
Message-ID: <20050114010016.GA16635@gate.ebshome.net> (raw)
In-Reply-To: <20050113215808.GA15124@wohnheim.fh-wedel.de>

On Thu, Jan 13, 2005 at 10:58:08PM +0100, J?rn Engel wrote:
> On Thu, 13 January 2005 13:21:52 -0800, Eugene Surovegin wrote:
> > 
> > It's a standard, period. If there is a PHY which isn't compliant I
> > guess it will not work anyway, but in this case, yes, we can use
> > PHY-specific link detection, but only in this case. I suspect you'll
> > have a hard time finding such PHY :)
> 
> http://www.broadcom.com/collateral/pb/5325-PB05-R.pdf
> 
> With some thinking and very little code, you can use this neat chip
> almost like a normal phy.

Yeah, but why would I want to? If you connect your MAC to any 5 PHYs 
my statement still stands, if directly to MII you don't need any PHY 
stuff at all, because link is always ON and speed/duplex is fixed.

In fact, we use different switch chips connected to PPC4xx directly. 
In this situation, in my NAPI IBM EMAC driver I just have special 
"PHY-less" case which is trivial "fixed settings" one. And all this 
PHY lib is completely unneeded bloat.

--
Eugene

  reply	other threads:[~2005-01-14  1:00 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-12-23 19:01 [RFC] Patch to Abstract Ethernet PHY support (using driver model) Andy Fleming
2004-12-23 21:00 ` Andy Fleming
2005-01-06  7:02   ` Eugene Surovegin
2005-01-06 17:13     ` Eugene Surovegin
2005-01-13 19:50     ` Andy Fleming
2005-01-13 21:21       ` Eugene Surovegin
2005-01-13 21:58         ` Jörn Engel
2005-01-14  1:00           ` Eugene Surovegin [this message]
2005-01-14 14:55             ` Jörn Engel
2005-01-14 15:25               ` Eugene Surovegin
2005-01-14 15:49                 ` Jörn Engel
2005-01-14 21:00               ` Andy Fleming
2005-01-17 17:17                 ` Jörn Engel

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