[coreboot] USB problems in Haswell+Lynxpoint motherboards

[Аладышев Константин]

Does someone have moherboards with Haswell+Lynxpoint?
I have problems with USB.
In Linux USB devices work fine with "ehci-pci" driver and don't work
correctly with "ehci-hcd" driver (they freeze completely short time after
boot).
In Windows USB devices work fine in safe mode and don't work correctly with
normal mode (again they freeze completely short time after boot).

What is the difference between these two Linux drivers and what can be the
source of this problem?