Intel submits USB4 Version 2.0 preliminary support to Linux 6.5

Thanks to CTOnews.com netizen OC_Formula for the clue delivery! CTOnews.com July 4, last September, USB Promoter Group announced the USB4 Version 2.0 standard, which can use USB-C data lines to achieve transmission speeds of up to 80 Gbps (10GB/s) and can process 120 Gbps of data in one direction and 40 Gbps in the other.

Intel has now provided initial support for USB4 v2 for the Linux 6.5 kernel and has initially enabled it on its new Intel Barlow Ridge controller.

Mika Westerberg, an Intel engineer, worked with a number of Linux engineers to launch USB4 v2 and enabled their Barlow Ridge controller.

Initial support includes 80g symmetrical link support, the number of bits required to start the router in v2 mode, adaptive TMU processing, PCIe extended encapsulation, DisplayPort 2.x tunnel support, and CL2 low-power link-state processing, 120g and 80g link support, and other changes are coming.

Apart from these patches, CTOnews.com hasn't found much Intel Barlow Ridge information yet, which seems to be Intel's upcoming USB v2 dedicated controller.

It is reported that USB4 v2's support for Linux is part of Linux 6.5's USB pull request, which also adds a new Qualcomm PMIC Type-C driver, NVIDIA Tegra streaming protocol support, CDNS2 device driver, and many other updates.