From: Bob Peterson <bob@acdstar.com>
To: achim.machura@berghof.com,
"Linuxppc-Embedded \(E-Mail\)" <linuxppc-embedded@ozlabs.org>
Subject: Re: USB + MPC5200 L25R REV 2 OCT0511C
Date: Thu, 04 Aug 2005 08:35:36 -0500 [thread overview]
Message-ID: <6.2.3.4.1.20050804082815.01ee2e30@mail.int.acdstar.com> (raw)
In-Reply-To: <00a501c598e6$b7823130$34f1ff0a@beint.local>
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@berghof.com
>Internet: http://www.berghof.com
>
>
>_______________________________________________
>Linuxppc-embedded mailing list
>Linuxppc-embedded@ozlabs.org
>https://ozlabs.org/mailman/listinfo/linuxppc-embedded
next prev parent reply other threads:[~2005-08-04 13:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-04 11:21 USB + MPC5200 L25R REV 2 OCT0511C Achim Machura
2005-08-04 13:35 ` Bob Peterson [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-08-04 14:03 Martin Krause
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=6.2.3.4.1.20050804082815.01ee2e30@mail.int.acdstar.com \
--to=bob@acdstar.com \
--cc=achim.machura@berghof.com \
--cc=linuxppc-embedded@ozlabs.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).