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81af2952e6
USB4 v2 spec defines a Gen 4 link that can operate as an aggregated symmetric (80/80G) or asymmetric (120/40G). When the link is asymmetric, the USB4 port on one side of the link operates with three TX lanes and one RX lane, while the USB4 port on the opposite side of the link operates with three RX lanes and one TX lane. Add support for the asymmetric link and provide functions that can be used to transition the link to asymmetric and back. Signed-off-by: Gil Fine <gil.fine@linux.intel.com> Co-developed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.