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RE: ETRAX USB HowTo ???? Other symptoms

Hi Flavio,

The USB ports are mulitplexed with serial ports and the
interrupts and DMA channels are shared. IRQ 25 is
used by DMA channel 9 which is used by serial port 1
and usb port 0. Try to disable serial port 1 in the
kernel configuration and rebuild he kernel.


-----Original Message-----
From: owner-dev-etrax@xxxxxxx.com]On">mailto:owner-dev-etrax@xxxxxxx.com]On
Behalf Of Flavio Molinelli
Sent: den 24 december 2001 12:22
To: Flavio Molinelli; dev-etrax@xxxxxxx.com
Cc: claudio.lerici@xxxxxxx.it
Subject: Re: ETRAX USB HowTo ???? Other symptoms

Other symptoms...

When I ktest the image, I have a look at /proc/kmsg, and see that the kernel
is trying initializing USB bus 1, bat it fails to allocate IRQ25 for USB
device, so the initialization fails.
Other USB messages (USB, ACM) seems to be OK...

----- Original Message -----
From: "Flavio Molinelli" <fmoli@xxxxxxx.it>
To: <dev-etrax@xxxxxxx.com>
Cc: <claudio.lerici@xxxxxxx.it>
Sent: Monday, December 24, 2001 11:19 AM
Subject: ETRAX USB HowTo ????

> We build a board, basicaly a developer board with 4 serials and 1 USB
> The board is working well, and we can use the serial ports.
> Now we have to test the USB connection
> I'd plan to use ACM drivers to connect to an external USB modem (already
> checked compatibility w/ Linux 2.4 on a RH 7.1 box)
> But, when configuring the kernel, doubt begin:
> I enabled Etrax USB support, port 1 in Host mode.
> I enabled kernel USB support.... but should I set UHCI or OHCI?
> I enabled USB fs and ACM drivers.
> But the only think I can see is that usb device (180) and ACM device (166)
> are present.
> I mount the usbdevfs, and see no devices, and usbdevfs, usb and acm
> Is ther an ETRAX USB howto?
> or someone can help me setting the Etrax USB up and working?
> Thanks
> Flavio