Re: USB 2.0 host controller for Thunderbolt 4

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On 23.05.23 10:53, Tomasz Moń wrote:
Hello,

Dell Latitude 5330 with 12th Gen Intel(R) Core(TM) i7-1265U contains
following PCI devices:
   * 8086:461e - Alder Lake-P Thunderbolt 4 USB Controller
   * 8086:51ed - Alder Lake PCH USB 3.2 xHCI Host Controller

Thunderbolt 4 USB Controller initializes first and therefore following
usb host controllers are registered:
   * usb1 - USB 2.0 High-Speed
   * usb2 - USB 3.2 Enhanced SuperSpeed
   * usb3 - USB 2.0 High-Speed
   * usb4 - USB 3.1 Enhanced SuperSpeed

When I connect SuperSpeed device directly to the Dell Latitude, it ends
up on usb4. Low/Full/High-Speed devices end up on usb3 as expected.

When I connect Thunderbolt 3 dock, two new host controllers show up:
   * usb5 - USB 2.0 High-Speed
   * usb6 - USB 3.0 SuperSpeed

Could you provide lspci in that state?
AFAICT there is nothing that would prevent a vendor from putting
a PCI HC into a TB3 docking station.

	Regards
		Oliver



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