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Various MediaTek SoCs use GPU integration silicon named "MFlexGraphics" by MediaTek. On the MT8196 and MT6991 SoCs, interacting with this integration silicon is required to power on the GPU. This glue silicon is in the form of an embedded microcontroller running special-purpose firmware, which autonomously adjusts clocks and regulators. Implement a driver, modelled as a pmdomain driver with a set_performance_state operation, to support these SoCs. The driver also exposes the actual achieved clock rate, as read back from the MCU, as common clock framework clocks, by acting as a clock provider as well. Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.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 reStructuredText 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.