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.
Jani Nikula
authored
Limit the supported UHBR rates based on the repeater support, if there are repeaters. This should be done in DP helper level, but that requires an overhaul of the LTTPR handling, as the max rate is not enough to represent how 128b/132b rates may be masked along the way. Curiously, the spec says: * Shall be cleared to 00h when operating in 8b/10b Link Layer. * Each LTTPR on the way back to the DPTX shall clear the bits that do not correspond to the LTTPR's current bit rate. It's rather vague if we can reliably use the field at this time due to the wording "operating" and "current". But it would seem bizarre to have to wait until trying to operate a 128b/132b link layer at a certain bit rate to figure this out. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by:Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211007105727.18439-1-jani.nikula@intel.com
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