Verification:

root@CFLS:/home/test# lspci -s 14.0 -v
00:14.0 USB controller: Intel Corporation Device a36d (rev 01) (prog-if 30 
[XHCI])
Subsystem: Intel Corporation Device 7270
Flags: bus master, medium devsel, latency 0, IRQ 123
Memory at b1220000 (64-bit, non-prefetchable) [size=64K]
Capabilities: [70] Power Management version 2
Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+
Capabilities: [90] Vendor Specific Information: Len=14 <?>
Kernel driver in use: xhci_hcd
root@CFLS:/home/test# lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/10p, 10000M (10Gbps)
__ Port 6: Dev 3, If 0, Class=Mass Storage, Driver=uas, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/16p, 480M
__ Port 7: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
__ Port 7: Dev 2, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
__ Port 8: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
__ Port 14: Dev 4, If 0, Class=Wireless, Driver=btusb, 12M
__ Port 14: Dev 4, If 1, Class=Wireless, Driver=btusb, 12M
>From the output, 10Gbps is supported.

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https://bugs.launchpad.net/bugs/1720045

Title:
  [Bug] USB 3.1 Gen2 works as 5Gbps

Status in intel:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Released

Bug description:
  Description:

  [USB][CFL-S][Mehlow]USB 3.1 Gen2 works as 5Gbps.

  Steps:
  1. boot up platform
  2. plug in a USB 3.1 Gen2 device
  3. lsusb -t

  [Expected Results]
  It will be enumed as 10Gbps device

  [Observed Results]
  It is enumed as 10Gbps device. But works after apply 
0001-xhci-set-USB3.1-debugging-on-as-default-workaround-m.patch.

  
  Target Kernel: 4.14
  Target Release: 18.04
  If 17.10, it will need back porting

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