netdev - Re: Porting the ibm_newemac driver to use phylib (and other PHY/MAC questions)

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Message-ID: <625fc13d0904200529l152b8d75g33c3f940de1b2920@mail.gmail.com>
Date:	Mon, 20 Apr 2009 08:29:24 -0400
From:	Josh Boyer <jwboyer@...ux.vnet.ibm.com>
To:	Kyle Moffett <kyle@...fetthome.net>
Cc:	netdev <netdev@...r.kernel.org>,
	"Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linuxppc-dev@...abs.org
Subject: Re: Porting the ibm_newemac driver to use phylib (and other PHY/MAC 
	questions)

On Fri, Apr 17, 2009 at 8:32 PM, Kyle Moffett <kyle@...fetthome.net> wrote:
> Hello,
>
> I'm currently fiddling with a custom embedded prototype board using
> the ibm_newemac driver with some currently-unsupported PHYs.  Those
> PHYs *are* supported by phylib, but the emac driver seems to have its
> own PHY layer cribbed from the sungem driver.  I'm curious if there's
> some particular reason it hasn't been ported (aside from "nobody has
> bothered yet").

IIRC, Ben had some issues with how phylib and the EMAC would need to
interact.  Not sure if he has those written down somewhere or not.
(CC'd).

> I've temporarily hacked a PHY driver together for the moment, but it
> would be much easier for us to maintain and update our board if the
> PHY drivers were integrated.  As a result I'm also interested in how
> complicated it might be to port the driver (and possibly sungem as
> well) over to phylib, if that is indeed feasible.  Also, if I end up
> going that route, are there others available with other hardware
> variants who would be willing to test my patches on their boards?

I have a large variety of boards that I can test with since the entire
4xx line relies on this driver for on-board network.

josh
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