Messages in this thread | | | From | Esther Shimanovich <> | Date | Thu, 18 Apr 2024 15:43:08 -0400 | Subject | Re: [PATCH v4] PCI: Relabel JHL6540 on Lenovo X1 Carbon 7,8 |
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Thank you for your response! It is very much appreciated.
On the Tiger Lake device I was testing on, the usb4-host-interface value is NOT listed in its ACPI.
I then decided to query the ACPI values collected from devices in my office, to see if this issue is limited to my device. Ice Lake - 4 devices, none had "usb4-host-interface" Tiger Lake - 31 devices, none have "usb4-host-interface" Alder Lake - 32 devices, I see that 15 of them have "usb4-host-interface" in their ACPI Raptor Lake - 1 device, does not have "usb4-host-interface"
It looks like only Alder Lake has usb4-host-interface listed in its ACPI for whatever reason.
It seems like I cannot use usb4-host-interface as a determinant whether the CPU has Thunderbolt capabilities (thus not needing a discrete Thunderbolt chip). ExternalFacingPort is listed in devices that don't have CPUs with Thunderbolts, so that can't be a determinant.
Am I missing something?
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