From: "Tian, Feng" <feng.tian@intel.com>
To: "Anbazhagan, Baraneedharan" <anbazhagan@hp.com>,
"edk2-devel@lists.01.org" <edk2-devel@lists.01.org>
Cc: "Tian, Feng" <feng.tian@intel.com>
Subject: Re: USB hub port reset
Date: Mon, 14 Nov 2016 01:45:42 +0000 [thread overview]
Message-ID: <7F1BAD85ADEA444D97065A60D2E97EE566E4F108@SHSMSX101.ccr.corp.intel.com> (raw)
In-Reply-To: <AT5PR84MB02769CBB7CD17B80AB4C8FDEBABD0@AT5PR84MB0276.NAMPRD84.PROD.OUTLOOK.COM>
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:anbazhagan@hp.com]
Sent: Sunday, November 13, 2016 11:53 AM
To: edk2-devel@lists.01.org; Tian, Feng <feng.tian@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
next prev parent reply other threads:[~2016-11-14 1:45 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-13 3:52 USB hub port reset Anbazhagan, Baraneedharan
2016-11-14 1:45 ` Tian, Feng [this message]
2016-11-14 3:32 ` Anbazhagan, Baraneedharan
2016-11-14 4:38 ` Tian, Feng
2016-11-14 13:46 ` Anbazhagan, Baraneedharan
2016-11-15 4:28 ` Tian, Feng
2016-11-15 23:56 ` Anbazhagan, Baraneedharan
2016-11-16 1:45 ` Tian, Feng
2016-11-16 2:00 ` Anbazhagan, Baraneedharan
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