On 05/06/2016 01:28 PM, Daniel Thompson wrote:
On 06/05/16 17:52, David Long wrote:
I've been having no luck getting low-speed USB devices (i.e.: keyboard and mouse) to work with the 4.4 96boards kernel on hikey. My ethernet dongle works fine though. Is there a known problem or do I maybe just have a config issue? The error messages are:
device descriptor read/64, error -71
anddevice not accepting address 7, error -71
OK, so it's clear now that the problem is the inability to use full/low speed together with high speed devices, combined with the fact the 4.4 hikey kernel sets high speed when both speed classes are present. It also looks like other changes in the post 3.18 debugfs break the /home/linaro/bin/usb_speed tool (i.e.: the "config" file no longer exists).
Thanks, -dl