Support for Adder875 in Linux 2.4

Markus Westergren markus.westergren at
Tue Feb 15 06:47:34 EST 2005

On Mon, 14 Feb 2005, Jan Damborsky wrote:

> Markus Westergren wrote:
> >Hi,
> >
> >I'm working on a project which will use hardware based on Analogue & Micro
> >Adder875 module together with Linux 2.4.
> >
> >I use RedBoot as bootloader and kernel 2.4.27-pre1, both came with the Adder
> >module.
> >
> >The project require:
> >
> > - dual ethernet support with AM79C874 PHY
> >   The driver I've found (fec.c) only supports one ethernet. I'v started
> >	modifying a newer version of this driver which have support for my PHY. I
> >	have made some progress but it's not working yet. Found out that the first
> >	FEC is used to communicate with both PHY's. Both devices are detected
> >	correctly and the first seems to work but the second hangs the kernel when
> >	the first packet is sent or received.
> >
> >
> We use our proprietary board with MPC880, dual ethernet + Am79C874 PHY.
> Kernel 2.4.25  (linuxppc_2_4_devel checked out from Original
> source tree supports only one FEC, but with minor ugly hack we utilize
> both MPC880 FECs
> without problem. If interested, I can send you a patch for get 2nd FEC
> working.
I got my board working with both ethernet ports today. I'm interested in your
patch so that I can see if we made the same ugly hack and if I have overlocked
something :)


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