On 10/30/2018 04:56 PM, Mathias Nyman wrote: > > On 30.10.2018 12:48, Cherian, George wrote: >> Implement workaround for ThunderX2 Errata-129 (documented in >> CN99XX Known Issues" available at Cavium support site). >> As per ThunderX2errata-129, USB 2 device may come up as USB 1 >> if a connection to a USB 1 device is followed by another connection to >> a USB 2 device, the link will come up as USB 1 for the USB 2 device. >> >> Resolution: Reset the PHY after the USB 1 device is disconnected. >> The PHY reset sequence is done using private registers in XHCI register >> space. After the PHY is reset we check for the PLL lock status and retry >> the operation if it fails. From our tests, retrying 4 times is >> sufficient. >> >> Add a new quirk flag XHCI_RESET_PLL_ON_DISCONNECT to invoke the >> workaround >> in handle_xhci_port_status(). >> >> Signed-off-by: George Cherian <george.cherian@xxxxxxxxxx> > > Thanks, adding to queue > Thank you!! > -Mathias Regards, -George
