Why FEC and SCC1 can not work at the same time?

zhongqx zhongqx at guoguang.com.cn
Wed Sep 18 15:42:00 EST 2002


Sir,
   thank you very much,
   what you said is very right,fix ppcboot just like you said,and the proplem disappear!
   thank you again!
----- Original Message -----
From: "Dave Ellis" <DGE at sixnetio.com>
To: "'zhongqx'" <zhongqx at guoguang.com.cn>
Cc: <linuxppc-embedded at lists.linuxppc.org>
Sent: Wednesday, September 18, 2002 4:20 AM
Subject: RE: Why FEC and SCC1 can not work at the same time?

> On Tuesday, September 17, 2002 zhongqx wrote:
> > Now I meet a new problem! it is very strange!
> > I want to use FEC(100M) and SCC1(10M) interface,but they can
> > not work together.
> >      When I use ppcboot with CONFIG_SCC1_ENET defined , boot
> > linux ,then SCC1 is ok,when I ping FEC (I config it ip
> > address is 192.168.2.221) it displayed messaged "time out".
> >      When I use ppcboot with CONFIG_FEC_ENET  defined,  boot
> > linux ,then FEC is ok, when I
> > ping SCC( I config it ip address is 192.168.1.198) it
> > displayed messaged also "time out".
>
> For FADS PPCBoot sets up both BCSR1 and BCSR4 in cpu/mpc8xx/scc.c.
> In Linux 2.4.18 only BCSR1 is configured in arch/ppc/8xx_io/enet.c
> Maybe configuring BCSR4 in enet.c would help.

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