[lkml]   [2014]   [Dec]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 3/3] usb: dwc3: add a quirk for device disconnection issue in Synopsis dwc3 core
On Tue, Dec 16, 2014 at 10:10:28AM +0800, Sneeker Yeh wrote:
> Synopsis DesignWare USB3 IP Core integrated with a config-free
> phy needs special handling during device disconnection to avoid
> the host controller dying.
> This quirk makes sure PORT_CSC is cleared after the disable slot
> command when usb device is disconnected from internal root hub,
> otherwise, Synopsis core would fall into a state that cannot use
> any endpoint command. Consequently, device disconnection procedure
> might not be finished because sometimes endpoint need to be stop
> by endpoint stop command issuing.
> Symptom usually happens when disconnected device is keyboard,
> mouse, and hub.

you need to point us to the synopsys STARS ticket number. That's the
only way to reference this specific quirk. Add it to a comment

[unhandled content-type:application/pgp-signature]
 \ /
  Last update: 2014-12-22 17:21    [W:2.042 / U:0.152 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site