From: "tiejun.chen" <tiejun.chen@windriver.com>
To: Scott Wood <scottwood@freescale.com>
Cc: ppcdev <linuxppc-dev@ozlabs.org>
Subject: Re: CONFIG_FEC is not good for mpc8xx ethernet?
Date: Tue, 19 Oct 2010 10:03:09 +0800 [thread overview]
Message-ID: <4CBCFC5D.3010403@windriver.com> (raw)
In-Reply-To: <20101018114214.2e72a616@udp111988uds.am.freescale.net>
Scott Wood wrote:
> On Mon, 18 Oct 2010 16:40:42 +0800
> "tiejun.chen" <tiejun.chen@windriver.com> wrote:
>
>> Shawn Jin wrote:
>>> Hi,
>>>
>>> My target is a mpc875 based board and has FEC ethernet. The phy is
>>> AM79C874. I have the following configuration for the network support.
>>>
>>> CONFIG_PHYLIB=y
>>> CONFIG_NET_ETHERNET=y
>>> CONFIG_MII=y
>>> CONFIG_FS_ENET=y
>>> CONFIG_FS_ENET_HAS_FEC=y
>>> CONFIG_FS_ENET_MDIO_FEC=y
>>>
>>> However I found that the phy support (AM79C874) is actually in
>>> drivers/net/fec.c which is compiled only when CONFIG_FEC=y. However
>> The phy driver should not be embedded into the NIC driver in theory.
>
> Right, those are handled by drivers/net/phy/.
>
>> I think you should include the phy driver, mdio-bitbang.c, which should be
>> support AMD79C874.
>
> On MPC8xx you want drivers/net/fs_enet/mii-fec.c. This is just the
> MDIO driver; it doesn't handle any particular PHY. I don't know if
> there is a driver specifically for AM79C874, though the generic PHY
> support may be good enough.
Maybe.
I can found one related patch for supporting PHY AM79C874 on 2.6.15,
------
http://lists.ozlabs.org/pipermail/linuxppc-embedded/2005-November/021043.html
But I don't see that on the latest kernel, and also I don't know the history
completely for that. Maybe its already merged into one generic PHY driver but
I'm not sure.
Tiejun
>
> -Scott
>
>
next prev parent reply other threads:[~2010-10-19 2:00 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-18 8:13 CONFIG_FEC is not good for mpc8xx ethernet? Shawn Jin
2010-10-18 8:40 ` tiejun.chen
2010-10-18 16:42 ` Scott Wood
2010-10-19 2:03 ` tiejun.chen [this message]
2010-10-20 7:03 ` Shawn Jin
2010-10-20 7:46 ` tiejun.chen
2010-10-20 9:19 ` Shawn Jin
2010-10-25 8:21 ` tiejun.chen
2010-10-26 1:00 ` Shawn Jin
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