* P4080 + EHCI controller question
@ 2014-02-20 19:36 Ruchika
0 siblings, 0 replies; only message in thread
From: Ruchika @ 2014-02-20 19:36 UTC (permalink / raw)
To: linuxppc-dev
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
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2014-02-20 19:36 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2014-02-20 19:36 P4080 + EHCI controller question Ruchika
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).