From: Scott Wood <scottwood@freescale•com>
To: Ruchika <ruchika.k@servergy•com>
Cc: linuxppc-dev@lists•ozlabs.org
Subject: Re: Question about EHCI on P4080
Date: Fri, 21 Feb 2014 15:08:07 -0600 [thread overview]
Message-ID: <1393016887.6733.871.camel@snotra.buserror.net> (raw)
In-Reply-To: <53064FC9.8070908@servergy.com>
On Thu, 2014-02-20 at 12:56 -0600, Ruchika wrote:
> linuxppc,
> Is there another mailing list which is more appropriate ?
> If so I'd be happy to get a recommendation.
If you're asking about U-Boot support, the list is u-boot@lists•denx.de
Be sure to mention what version of U-Boot you're using, and that you're
using a recent U-Boot. Also, don't top post or post the same thing
twice.
If you're using U-Boot from the Freescale SDK rather than from upstream,
then instead get support from support@freescale•com or
https://community.freescale.com/ It might be a good idea to go that
route regardless, given that this sounds like it may be a hardware
compatibility issue.
I don't think there is a separate host controller or driver for USB 1.1
(or lower speed USB 2.0) devices on p4080 (though this is common on
PCs).
-Scott
>
> Thank you
> Regards
> ruchika
>
>
> On 2/19/2014 11:55 PM, Ruchika wrote:
> > Hi,
> > I've been trying to understand why the uboot code is unable to work with
> > USB1.1 devices.
> > On a USB analyzer:
> > I notice on an analyzer that there are no SOF or IN tokens seen on the
> > bus at all. The only after the very first setup packet is sent and ACK'd.
> >
> > The board has a hub chip on it connected to the USB controller via a
> > Ulpi interface.
> >
> > Uboot debug indicates that the transfer times out and was still "Active"
> >
> > The kernel code indicates that a companion driver handles 1.1 devices.
> > Does this mean there are 2 HCD's, one for HS and one for FS/LS in the
> > kernel ?
> > Thank you
> >
> >
> > ruchika
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@lists•ozlabs.org
> https://lists.ozlabs.org/listinfo/linuxppc-dev
>
>
prev parent reply other threads:[~2014-02-21 21:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-20 5:55 Question about EHCI on P4080 Ruchika
2014-02-20 18:56 ` Ruchika
2014-02-21 21:08 ` Scott Wood [this message]
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=1393016887.6733.871.camel@snotra.buserror.net \
--to=scottwood@freescale$(echo .)com \
--cc=linuxppc-dev@lists$(echo .)ozlabs.org \
--cc=ruchika.k@servergy$(echo .)com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
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