From: Laurent Pinchart <laurentp@cse-semaphore.com>
To: linuxppc-embedded@ozlabs.org
Cc: Misbah khan <misbah_khan@engineer.com>
Subject: Re: Firmware Support for USB Hub
Date: Wed, 21 Nov 2007 18:29:59 +0100 [thread overview]
Message-ID: <200711211830.02997.laurentp@cse-semaphore.com> (raw)
In-Reply-To: <474468C5.8080402@freescale.com>
[-- Attachment #1: Type: text/plain, Size: 1072 bytes --]
On Wednesday 21 November 2007 18:20, Scott Wood wrote:
> Misbah khan wrote:
> > Hi all,
> >
> > I am using a 8248 processor which has a USB controller and i need to
> > connect a USB Hub to it, iam using Montavista Linux .I need to know that
> > what are the support i need form Montavista or Open source to have an
> > interface with Usb hub. ???
> >
> > Is there any driver that we need to make if so what type ???
>
> I don't believe a driver currently exists for CPM USB.
There's an experimental out-of-tree driver available at
http://cpm2usb.sourceforge.net/
The code is outdated and doesn't work, but that's a starting point.
If I remember correctly, CPM2 USB host support requires the host to create SOF
packets in software. High system loads will probably mess the bus up. A
colleague of mines was told by Freescale to use an external USB controller
instead of the MPC8248 bundled one.
--
Laurent Pinchart
CSE Semaphore Belgium
Chaussée de Bruxelles, 732A
B-1410 Waterloo
Belgium
T +32 (2) 387 42 59
F +32 (2) 387 42 75
[-- Attachment #2: Type: application/pgp-signature, Size: 189 bytes --]
next prev parent reply other threads:[~2007-11-21 17:30 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-21 13:45 Firmware Support for USB Hub Misbah khan
2007-11-21 17:20 ` Scott Wood
2007-11-21 17:29 ` Laurent Pinchart [this message]
2007-11-22 10:27 ` Misbah khan
2007-11-22 11:16 ` Clemens Koller
2007-11-22 9:53 ` Misbah khan
2007-11-23 8:45 ` Misbah khan
2007-11-23 12:23 ` Laurent Pinchart
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=200711211830.02997.laurentp@cse-semaphore.com \
--to=laurentp@cse-semaphore.com \
--cc=linuxppc-embedded@ozlabs.org \
--cc=misbah_khan@engineer.com \
/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).