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6ce3563520
The USB4 spec defines an optional feature that allows the connection manager to negotiate with the graphics through DPCD registers changes in the bandwidth allocation dynamically. This is referred as "bandwidth allocation mode" in the spec. The connection manager uses DP IN adapters registers to communicate with the graphics, and also gets notifications from these adapters when the graphics wants to change the bandwidth allocation. Both the connection manager and the graphics driver needs to support this. We check if the DP IN adapter supports this and if it does enable it before establishing a DP tunnel. Then we react on DP_BW notifications coming from the DP IN adapter and update the bandwidth allocation accordingly (within the maximum common capabilities the DP IN/OUT support). Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> |
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| README | ||
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.