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582ed3162d
regmap has introduced a maple tree based register cache which makes use of this more advanced data structure which has been added to the kernel recently. Maple trees are much flatter than rbtrees, meaning that they do not grow to such depths when the register map is sparse which makes access a bit more efficient. The maple tree cache type is still a bit of a work in progress but should be effective for some devices already. RT5682 seems like a good candidate for maple tree. It only supports single register read/write operations so will gain minimal benefit from storing the register data in device native format like rbtree does (none for SoundWire) and has some sparsity in the register map which is a good fit for maple tree. Convert to use maple tree. There should be little if any visible difference at runtime. Signed-off-by: Mark Brown <broonie@kernel.org Link: https://lore.kernel.org/r/20230419-asoc-rt5682-maple-v1-1-ed40369c9099@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org
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.