[coreboot] USB problem with Haswell+LynxPointLP motherboards

[Zoran Stojsavljevic]

Potihon6ky rebjatiski... Tiho! Daite mne vremja razobratsja!

Thank you,
Zoran

On Mon, Oct 9, 2017 at 11:58 AM, Аладышев Константин <aladyshev at nicevt.ru>
wrote:

> I try to port coreboot on boards with Haswell CPU and Lynxpoint LP chipset
> (IBASE IB908AF-4650 board, DFI HU968) and I've encountered a strange
> problem. USB devices stop working shortly after OS boot (or after USB
> device
> replug in OS) with flooding system with messages:
>
> hub 1-1:1.0: cannot reset port 5 (err = -110)
> hub 1-1:1.0: cannot reset port 5 (err = -110)
> hub 1-1:1.0: Cannot enable port 5.  Maybe the USB cable is bad?
> hub 1-1:1.0: cannot disable port 5 (err = -110)
> hub 1-1:1.0: connect-debounce failed, port 5 disabled
> hub 1-1:1.0: unable to enumerate USB device on port 5
> hub 1-1:1.0: cannot disable port 5 (err = -110)
> hub 1-1:1.0: hub_port_status failed (err = -110)
> hub 1-1:1.0: hub_port_status failed (err = -110)
>
> Through some digging I've found out that this problem persist on kernels
> <3.5. I've investigated this problem more closely and come down to the fact
> that the kernel commit that solves this problem is:
>
> 3d9545c EHCI: maintain the ehci->command value properly
>
> https://github.com/torvalds/linux/commit/3d9545cc375d117554a9b35dfddadf
> 9189c
> 62775?diff=split
>
>
> And now I'm kinda stuck. The effect of this commit doesn't seem to
> interface
> with bios for me. So how does original IBASE/DFI bios can overcome code
> error before this commit?
>
> What can be the source of my problem? What should I investigate more
> precise
> based on result that I've got?
>
>
> --
> coreboot mailing list: coreboot at coreboot.org
> https://mail.coreboot.org/mailman/listinfo/coreboot
>
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