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Groups > linux.kernel > #1666753
| From | Alan Stern <stern@rowland.harvard.edu> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller |
| Date | 2017-06-15 16:20 +0200 |
| Message-ID | <tSDMR-3vs-5@gated-at.bofh.it> (permalink) |
| References | <tSwV5-7xc-31@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thu, 15 Jun 2017, Kai-Heng Feng wrote: > On Wed, Jun 14, 2017 at 1:28 AM, Bjorn Helgaas <helgaas@kernel.org> wrote: > > > > The lspci output [1] shows: > > > > 00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 39) (prog-if 20 [EHCI]) > > Capabilities: [c0] Power Management version 2 > > Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+) > > Status: D3 NoSoftRst- PME-Enable+ DSel=0 DScale=0 PME- > > Bridge: PM- B3+ > > > > The device claims it can assert PME# from D3hot. If it can't, that > > sounds like a hardware defect that should be addressed with a quirk. > > Ideally we would also have a pointer to the AMD hardware erratum. > > Looks like it's pretty similar to "23 USB Wake on Connect/Disconnect > with Low Speed Devices" in [1]. > It points to a workaround in appendix A2 from [2]. > However it says this bug only effects Low Speed devices, but it > actually also happens on High Speed devices. > > [1] https://support.amd.com/TechDocs/46837.pdf > [2] https://support.amd.com/TechDocs/42413.pdf Those documents refer to a hardware bug with a workaround in the BIOS. Have you checked to see if your BIOS is up to date? Alan Stern
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[PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller Kai-Heng Feng <kai.heng.feng@canonical.com> - 2017-06-09 09:30 +0200
Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller Alan Stern <stern@rowland.harvard.edu> - 2017-06-09 16:50 +0200
Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller Kai-Heng Feng <kai.heng.feng@canonical.com> - 2017-06-12 09:10 +0200
Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller Kai-Heng Feng <kai.heng.feng@canonical.com> - 2017-06-12 12:20 +0200
Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller Alan Stern <stern@rowland.harvard.edu> - 2017-06-12 16:20 +0200
Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller Kai-Heng Feng <kai.heng.feng@canonical.com> - 2017-06-13 06:30 +0200
Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller Bjorn Helgaas <helgaas@kernel.org> - 2017-06-13 19:30 +0200
Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller Alan Stern <stern@rowland.harvard.edu> - 2017-06-14 21:00 +0200
Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller Kai-Heng Feng <kai.heng.feng@canonical.com> - 2017-06-15 09:10 +0200
Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller Bjorn Helgaas <helgaas@kernel.org> - 2017-06-15 15:30 +0200
Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller Kai-Heng Feng <kai.heng.feng@canonical.com> - 2017-06-15 09:00 +0200
Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller Alan Stern <stern@rowland.harvard.edu> - 2017-06-15 16:20 +0200
Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller Kai-Heng Feng <kai.heng.feng@canonical.com> - 2017-06-16 05:10 +0200
Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller Kai-Heng Feng <kai.heng.feng@canonical.com> - 2017-06-16 18:20 +0200
Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller Alan Stern <stern@rowland.harvard.edu> - 2017-06-16 19:40 +0200
Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller Kai-Heng Feng <kai.heng.feng@canonical.com> - 2017-06-19 05:40 +0200
Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller Bjorn Helgaas <helgaas@kernel.org> - 2017-06-19 19:50 +0200
Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller Alan Stern <stern@rowland.harvard.edu> - 2017-06-19 20:40 +0200
Re: [PATCH] usb: host: ehci: workaround PME bug on AMD EHCI controller "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2017-06-20 00:10 +0200
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