From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
To: Rodolfo Giometti <giometti@linux.it>
Cc: linux-mips@linux-mips.org
Subject: Re: Problem on au1100 USB device support
Date: Wed, 11 Oct 2006 00:03:25 +0400 [thread overview]
Message-ID: <452BFC8D.8080903@ru.mvista.com> (raw)
In-Reply-To: <20061010182747.GA14539@enneenne.com>
Hello.
Rodolfo Giometti wrote:
> I'm just working on adding USB device support for au1100 CPUs.
> I wrote the driver (attached) but I cannot understand why when I
> insert the USB cable I see no activities on the bus... my USB sniffer
> says that the target port is "disconnected/reset".
> USB host controller is working so I suppose the clock is well routed
> to USB device controller too.
What tree are you testing against? Asking because with the recent deletion
of the "old" driver (arch/mips/au1000/common/usbdev.c), the setup code
fiddling with SYS_PINFUNC and SYS_CLKSRC regs is gone...
> Someone may halp me in understing where the problem could be? My
> driver doesn't use DMA, as suggested by the CPU's data sheet... it
> could be wrong?
Well, errata says you must use DMA for endpoint 0 on Au1100 revs before BE
-- otherwise you'll be asking for trouble.
> Thanks in advance,
> Rodolfo
WBR, Sergei
next prev parent reply other threads:[~2006-10-10 20:03 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-10 18:27 Problem on au1100 USB device support Rodolfo Giometti
2006-10-10 19:33 ` Dan Malek
2006-10-10 19:40 ` Rodolfo Giometti
2006-10-10 19:41 ` Sergei Shtylyov
2006-10-11 13:15 ` Dan Malek
2006-10-10 20:03 ` Sergei Shtylyov [this message]
2006-10-10 23:52 ` Rodolfo Giometti
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