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Re: smc91x support

To: matej.kupljen@ultra.si
Subject: Re: smc91x support
From: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Date: Fri, 11 Nov 2005 00:15:43 +0900 (JST)
Cc: linux-mips@linux-mips.org
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>>>>> On Thu, 10 Nov 2005 15:52:11 +0100, Matej Kupljen 
>>>>> <matej.kupljen@ultra.si> said:

matej> What is the patch required for smc91x.h?

I also want to know about the patch.

matej> I also added support for smc91x.h to enable it on the DBAU1200,
matej> but as I wrote in another mail, I get bad performance.  I
matej> enabled the debug mode and I now I see that I get a lot of
matej> overruns, like:
matej> ...
matej> [4294761.172000] eth0: RX overrun (EPH_ST 0x0001)
matej> [4294761.190000] eth0: RX overrun (EPH_ST 0x0001)
matej> [4294761.198000] eth0: RX overrun (EPH_ST 0x0001)
matej> ...

matej> Is there any solution to this?

I have similar problem on my several custom boards with SMC91C111.  I
see so many RX overrun, but I can not see why it happens.  Forcing to
10Mbps/HalfDuplex reduced the overrun count (and works better than
100Mbps), but it is not preferable, of course ...

---
Atsushi Nemoto

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