just for clearness (as it is easily beeing confused):
* uPD720200a -> rev.4 -> firmware 4.x.x.x and maybe 3.x.x.x
* uPD720200 -> rev.3 -> firmware 3.x.x.x only

in my case it's a rev.3 device on the mainboard.

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  Renesas USB3 (uPD720200) does not recognize USB3 devices

Status in linux package in Ubuntu:

Bug description:
  first: the whole system runs fine with windows 7 and USB3 devices on
  the USB3 host controller.

  i am now running Ubuntu 16.04 on this MSI MS-7666 x58 Big Bang XPower (2x 
USB3 sockets on the backplane outlet).
  i have switched to the latest firmware ( for NEC/Renesas uPD720200 by 
flashing it
  but no evidence with "lsusb -t" that the plugged USB3 device is present at 

  plugging the device to some USB2 port makes it work nicely.

  the bios (latest AMI BIOS 1.17) does not offer anything looking at
  least barely useful to me for this USB3 problem other than "legacy
  support at boot time" but this had no effect at all - as i feared.
  (this lack of options is probably unlike what other Board/BIOS do

  excerpt from kern.log:

  Sep 19 22:35:23 dtaa-flc21 kernel: [   57.575918] usb 2-5: USB disconnect, 
device number 3
  Sep 19 22:35:27 dtaa-flc21 kernel: [   62.009193] usb 10-2: Device not 
responding to setup address.
  Sep 19 22:35:27 dtaa-flc21 kernel: [   62.213145] usb 10-2: Device not 
responding to setup address.
  Sep 19 22:35:27 dtaa-flc21 kernel: [   62.417026] usb 10-2: device not 
accepting address 2, error -71
  Sep 19 22:35:28 dtaa-flc21 kernel: [   62.997097] usb 10-2: new SuperSpeed 
USB device number 3 using xhci_hcd
  Sep 19 22:35:33 dtaa-flc21 kernel: [   68.016941] usb 10-2: device descriptor 
read/all, error -110
  Sep 19 22:35:36 dtaa-flc21 kernel: [   70.564860] usb 10-2: new SuperSpeed 
USB device number 5 using xhci_hcd
  Sep 19 22:35:41 dtaa-flc21 kernel: [   75.580568] usb 10-2: unable to get BOS 
  Sep 19 22:35:41 dtaa-flc21 kernel: [   75.581491] usb 10-2: unable to read 
config index 0 descriptor/start: -71
  Sep 19 22:35:41 dtaa-flc21 kernel: [   75.581496] usb 10-2: can't read 
configurations, error -71
  Sep 19 22:43:43 dtaa-flc21 kernel: [  558.099596] xhci_hcd 0000:0d:00.0: port 
1 resume PLC timeout

  a similar problem but for a different USB3 host controller model can be found 

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