[Bug 218943] No SuperSpeedPlus on AM4/5 Hubs

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=218943

Mathias Nyman (mathias.nyman@linux.intel.com) changed:

           What    |Removed                     |Added
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                 CC|                            |mathias.nyman@linux.intel.c
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--- Comment #5 from Mathias Nyman (mathias.nyman@linux.intel.com) ---
Can you check the xhci roothub port speed of connected devices:

mount -t debugfs none /sys/kernel/debug/
cat /sys/kernel/debug/usb/xhci/<address of device>/ports/port*/portsc

If host uses default speed IDs then 
PortSpeed 4 is 5Gbps
PortSpeed 5 is 10Gbps (Gen2x1)
PortSpeed 6 is 10Gbps (2x5Gbps, Gen 1x2)

example:

cat /sys/kernel/debug/usb/xhci/0000:00:0d.0/ports/port*/portsc
0x0a0002a0 Powered Not-connected Disabled Link:RxDetect PortSpeed:0 Change:
Wake: WCE WOE 
0x000002a0 Powered Not-connected Disabled Link:RxDetect PortSpeed:0 Change:
Wake: 
0x000002a0 Powered Not-connected Disabled Link:RxDetect PortSpeed:0 Change:
Wake: 
0x00001603 Powered Connected Enabled Link:U0 PortSpeed:5 Change: Wake: 
0x000002a0 Powered Not-connected Disabled Link:RxDetect PortSpeed:0 Change:
Wake:

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