Question about EHCI on P4080

[Scott Wood]

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 at 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 at 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
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