Laurent Pinchart-4 wrote: > > > The good news is that Anton Vorontsov wrote and posted a FHCI driver for > QE-based parts on the linux-ppc mailing list (search the archive for > "[PATCH] > Freescale QUICC Engine USB Host Controller"). The driver can be easily > modified to work with CPM2-based parts. > > The bad news is that, from my experience with the CPM2, the controller is > almost unusable. It eats around 40% CPU time on my MPC8248 system, and > requires software help to generate SOF tokens, which results in bad SOF > tokens being sent on the bus. Most USB disks don't seem to care, but all > the > USB Bluetooth host controllers I've tested crashed. > > We will be looking for an external USB host controller (or even another > CPU) > for the next revision of the design. > > oh.. woww.. great info... :) :) thanks a million.. Right now I am just trying to get a USB -WiFi adapter working with EP8248 board. Did you have a go at any USB WiFi devices?
Yes hogging processor for 40% of time is a big issue...I guess at this moment I don't have any other options like respining or using 83xx processors so I would like to give a try with this once. Do you have a patch for getting the CPM2 posted any where? If not can you send me the patch. Thanks and Regards Naren. -- View this message in context: http://www.nabble.com/Help-on-MPC82XX-USB-Host-controller-Development-using-m82xx-hcd.-tp16304553p17643915.html Sent from the linuxppc-embedded mailing list archive at Nabble.com. _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
