Linux 6.5 favored by Intel, gets preliminary support for USB4 Version 2.0

News on July 4th, USB Promoter Group announced USB4 Version in September last year 2.0 standard, which utilizes USB-C data cables to achieve transfer speeds of up to 80 Gbps (10GB/s) and has the ability to process 120 Gbps of data in one direction and 40 in the other direction. Gbps data capability.

Recently, according to the editor's understanding, Intel has provided preliminary support for USB4 v2 for the Linux 6.5 kernel and has implemented it in its new Intel Barlow enabled on the Ridge controller. This means that the Linux 6.5 kernel can now take full advantage of USB4 v2 and is compatible with Intel's Barlow Ridge controller implementation.

Intel engineer Mika Westerberg participated in the launch of USB4 v2 together with many Linux engineers and successfully enabled their Barlow Ridge controller. The current initial support includes 80G symmetric link support, the number of bits required for router startup in v2 mode, adaptive TMU processing, PCIe extended encapsulation, DisplayPort Features such as 2.x tunnel support and CL2 low-power link state handling. In addition, there is 120G and 80G link support and other improvements coming soon.

It is worth noting that in addition to the support patch for USB4 v2, currently for Intel’s Barlow Not much specific information about the Ridge controller has been revealed, but it can be speculated that this will be Intel’s upcoming controller designed for USB v2.

In addition, it is reported that USB4 v2 support for Linux will become part of the USB pull request for Linux 6.5. This update also adds a new Qualcomm PMIC Type-C driver, NVIDIA Tegra streaming protocol support, CDNS2 device driver, and numerous other updates to further improve USB performance and functionality.

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