On Thu, Nov 19, 2020 at 10:12:02PM +0800, Kai-Heng Feng wrote: > > > > On Nov 19, 2020, at 21:59, Greg Kroah-Hartman <gre...@linuxfoundation.org> > > wrote: > > > > On Thu, Nov 19, 2020 at 09:41:32PM +0800, Kai-Heng Feng wrote: > >> Hi penghao, > >> > >>> On Nov 19, 2020, at 20:17, 彭浩 <peng...@uniontech.com> wrote: > >>> > >>> root@uos-PC:/sys/bus/usb/devices/usb7# dmesg > >>> [ 0.000000] Linux version 4.19.0-6-amd64 (debian-ker...@lists.debian.org) > >>> (gcc version 8.3.0 (Debian 8.3.0-6)) #1 SMP Uos 4.19.67-11eagle > >>> (2020-03-21) > >> > >> Thanks for the dmesg. But would it be possible to use mainline kernel > >> enable dynamic debug? > >> > >> But anyway, this is not a regular AMD or Intel platform, so I guess we can > >> merge the quirk as is... > >> > >> Kai-Heng > >> > >>> [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.19.0-6-amd64 > >>> root=UUID=e5a40c4f-d88e-4a4d-9414-a27892a31be7 ro splash > >>> console=ttyS0,115200n8 loglevel=7 > >>> DEEPIN_GFXMODE=0,1920x1080,1600x1200,1280x1024,1024x768 > >>> [ 0.000000] Zhaoxin Linux Patch Version is V3.0.2 > >>> [ 0.000000] With Zhaoxin Shanghai CPU patch V2.0.0 > > > > What do you mean "not a regular"? This is an x86-variant chip platform, > > but what does that have to do with the USB quirk detection? > > USB quirk detection should work fine. I was trying to find the root cause, > but seeing it's a Zhaoxin CPU, that could be the reason why mainline kernel, > which has many USB power management fixes, wasn't used. > > penghao, is it possible to boot mainline kernel on Zhaoxin CPU?
There have been a number of small patches for this type of CPU merged over the past months, so I hope a mainline kernel works here :) That being said, why would the platform matter for a USB device quirk? thanks, greg k-h
