USB + MPC5200 L25R REV 2 OCT0511C

[Bob Peterson]

Hi Achim and List,

I've recently been doing some experiments regards USB on our custom
icecube-like mpc5200 board using the usb-ohci driver, and here's what I found:

1. Some devices (high speed?) seem to work fine.  I used a USB jump drive.
2. Other devices (low speed?) like USB keyboard and mouse did not.
3. Plugging a USB hub into the board allows the same failing devices
     (kbd & mouse) to work properly (when they are plugged into the hub).
4. The off-the-shelf icecube board behaves the same way, so it's not just our
     board.

I haven't tried to backtrack this because USB isn't a major aspect of 
our product
and I've got higher priorities.

Regards,

Bob Peterson
Advanced Communication Design
(952) 854-4000

At 06:21 AM 8/4/2005, Achim Machura wrote:
>Helo list,
>
>do everybody know about problems with usb (usb-ohci) and MPC5200 label  L25R
>REV 2 OCT0511C.
>
>When i plugg in a usb-device, i see that the kernel will assign an address
>to the device, but it failed by timeout.
>
>The same kernel an the same usb-device works fine on a board with a cpu
>label 0L25R QAH0410
>
>best regards
>
>Achim
>
>____________________________________________
>Achim Machura Softwareentwicklung
>Berghof Automationstechnik GmbH
>Harretstrasse 1, D-72800 Eningen u.A.
>Tel: +49-7121-894-131, Fax: +49-7121-894-100
>email: machura at berghof.com
>Internet: http://www.berghof.com
>
>
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