From: Ira Weiny <iweiny@acm.org>
To: linuxppc-embedded@lists.linuxppc.org
Subject: Re: Walnut base board PCI problems
Date: Thu, 24 Jan 2002 11:20:05 -0800 [thread overview]
Message-ID: <20020124112005.75d4b366.iweiny@acm.org> (raw)
In-Reply-To: <20020118191321.7708fdaf.iweiny@acm.org>
Thank you all for you help.
It turns out that the one board which was working had correct strapping with
the PCI Sync clock at 33MHz.
A mix up in manufacturing allowed our other boards to be straped with a 16MHz
clock. For those of you who don't know even if the PCI bus is in Asyncronous
mode the Sync clock must be >= to the bus speed. In our case 33MHz.
Thanks so much for the input, it is always the simple ones which are hard to
find.
Ira Weiny
iweiny@acm.org
On Fri, 18 Jan 2002 19:13:21 -0800
Ira Weiny <iweiny@acm.org> wrote:
>
> It has been some time since I have written to the list with a question so
> forgive me if this deficient in some way.
>
> We have a custom 405GP board which is basically a Walnut platform minus some of
> the peripherals like keyboard/mouse, FPGA, etc.
>
> We manufactured 10 boards and one works. The others all display the same
> behavior below.
>
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
prev parent reply other threads:[~2002-01-24 19:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-19 3:13 Walnut base board PCI problems Ira Weiny
2002-01-24 19:20 ` Ira Weiny [this message]
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