I don't catch what you mean. We have had 10ms delay for port reset. Which line of UsbHub.c do you think there is problem?
Quote from USB2.0 spec: "Hubs must be able to accept all hub requests and devices must be able to accept a SetAddress() request (refer to Section 11.24.2 and Section 9.4 respectively) after the reset recovery time 10 ms (TRSTRCY) after the reset is removed." Thanks Feng -----Original Message----- From: Anbazhagan, Baraneedharan [mailto:anbazha...@hp.com] Sent: Monday, November 14, 2016 11:33 AM To: Tian, Feng <feng.t...@intel.com>; edk2-devel@lists.01.org Subject: RE: USB hub port reset I didn't mean to have extra delays. Am asking whether EDKII have to be updated for 10ms reset recovery time regardless of port status to align with spec? >From: Tian, Feng [mailto:feng.t...@intel.com] >Sent: Sunday, November 13, 2016 7:46 PM >To: Anbazhagan, Baraneedharan <anbazha...@hp.com>; edk2-devel@lists.01.org >Cc: Tian, Feng <feng.t...@intel.com> >Subject: RE: USB hub port reset > >Hi, Baranee > >Linux wait 10 + 40 ms (TRSTRCY = 10 ms, plus extra 40 ms). Do you mean EDKII >should be same with linux to wait more time? > >Thanks >Feng > >From: Anbazhagan, Baraneedharan [mailto:anbazha...@hp.com] >Sent: Sunday, November 13, 2016 11:53 AM >To: mailto:edk2-devel@lists.01.org; Tian, Feng <mailto:feng.t...@intel.com> >Subject: USB hub port reset > >EDK2 have reset recovery time of 10ms for hub port based on port status reset >bit but USB spec doesn't mention that port status can be used for t6/reset >recovery time. Could you please clarify? > >USB vendor mentions EDK2 doesn't have reset recovery time on hub port reset >and also highlighting EDK2 hub port reset differs from >https://github.com/torvalds/linux/blob/master/drivers/usb/core/hub.c#L2789 > >-Baranee _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
