Re: Olimex ARM-USB-OCD and ftdi-sio driver

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On Tue, Mar 3, 2009 at 1:04 AM, Greg KH <greg@xxxxxxxxx> wrote:
>
> On Tue, Mar 03, 2009 at 12:06:10AM -0500, Jon Smirl wrote:
> > I have an Olimex ARM-USB-OCD which I haven't used in a while. I just
> > got it out and tried using it on 2.6.28. I can't get the serial port
> > and JTAG to work simultaneously. It appears to me that ftdi-sio is
> > interfering with the user space jtag program. I get this in the log
> > file when I use the user space program.
> >
> > usb 7-2: usbfs: interface 1 claimed by ftdi_sio while 'jtag' sets config #1
> >
> > If I unload ftdi-sio I can use the device.
> >
> > 7-2:1.0 says its driver is usbfs
> > 7-2:1.1 says its driver is ftdi_sio
> >
> > I tried echo -n 7-2:1.0 >unbind on usbfs but it didn't help.
>
> You need to unbind the ftdi_sio driver and then use the jtag userspace
> program.
>
> That program should be the one doing the unbinding, there's a usbfs
> ioctl to do just that.

So I can't use the serial port and the jtag at the same time? If I
unbind ftdi_sio it closes my terminal connection.

Is there a way for libftdi to allow access to the jtag without
unbinding ftdi_sio?

>
> hope this helps,
>
> greg k-h



--
Jon Smirl
jonsmirl@xxxxxxxxx
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