USB4 PCIe tunneling support - timeline?

[antheas]

Hi,
I want to test eGPU support on an X1 Qualcomm laptop (specifically with [1] that I am writing now)

What is the timeline for USB4 support and PCIe tunneling?

Thanks.

[1] https://github.com/anatase-org/patchwork/blob/42a339c18111b17bb58ca28cd72fb3eca21cf2ec/drivers/usb/typec/samsung-emuec.c