On Thu, Jul 19, 2012 at 08:56:35PM +0000, Jerry Kirk wrote: > > > We have been attempting to get USB Host mode working under Barebox(2012-07-0) > > > a PCM043 platform (i.mx35), but we are having a bit of trouble. > > > > Could it be that the USB clock operates at the wrong rate? I think it > > should be 60MHz. > > We're not certain how to verify the clock setting for USB in Barebox. > We have used "dump_clocks" but are not certain which of these clocks > the USB clock is derived from. We think we have it set to the same > settings as the Eukrea board. The i.MX SoCs have a clko pin which can be muxed to different clocks. I don't know if this is accessible on the pcm043, but if yes, you could switch it to the USB clock and measure the clock. Otherwise it might be good to run a current -rc kernel, you can then see the complete clock tree in debugfs Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
