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Add an OPP (Operating Performance Points) table for the CPU cores for boards to include to DVFS (Dynamic Voltage & Frequency Scaling) on the H5. The table originates from Armbian, but the maximum voltage is raised slightly to account for boards using slightly higher voltages. The table and tie in to the CPU cores are put in a separate dtsi file that board files can include to opt in. Or they can define their own tables if the standard one does not fit. This has been tested on the Libre Computer ALL-H3-CC-H5 and the Bananapi M2+ v1.2 H5, both with adequate cooling. The former has a fixed 1.2V regulator, while the latter has a GPIO controlled regulator switchable between 1.1V and 1.3V. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Link: https://lore.kernel.org/r/20200717160053.31191-7-wens@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.