[Bug 218943] No SuperSpeedPlus on AM4/5 Hubs

[bugzilla-daemon@kernel.org]

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

--- Comment #20 from Thinh.Nguyen@synopsys.com ---
On Wed, Jun 12, 2024, bugzilla-daemon@kernel.org wrote:
>
> https://urldefense.com/v3/__https://bugzilla.kernel.org/show_bug.cgi?id=218943__;!!A4F2R9G_pg!cCuzUsUD-2ePSsdCBgCODNgftuH0LhiYyBq6--AbqKmW5wPBuGEQCnSgOWhEOf4rPi-n6bd02HAx-VvD0vN56GomiUx1GIRM$ 
> 
> --- Comment #19 from Jarrard (jarrard@proton.me) ---
> Plugged in a USB3 10Gbps HUB (red ports).  Under windows usbview shows it as
> USB3.2 SuperSpeedPlus 10Gbps and the USB devices connected agree. 
> 
> UNDER LINUX it is a 5Gbps hub and no SuperSpeedPlus.  I can't believe this
> sort
> of massive USB port bug has existed this long under Linux, does nobody test
> AM4/AM5 usb port speed compatibility? 
> 
> Anyway, still no clue on how to fix this, way above my pay grade.
> 

Are you using AsMedia host? Then I suspect it's a similar issue that was
reported before, and the issue is likely in the host controller
reporting the wrong port ID and not the driver issue.

It's a different AsMedia host version, but you can checkout this [*]
thread for more info. I suspect the test patch I provided there should
resolve your issue. It's been a while, you may need to tweak that change
to apply for your latest kernel.

[*]
https://lore.kernel.org/all/6908aa69-469b-8f92-8e19-60685f524f9c@synopsys.com/

BR,
Thinh

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