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Dragan Simic 89f1a037e9 arm64: dts: allwinner: a64: Add GPU thermal trips to the SoC dtsi 
Add thermal trips for the two GPU thermal sensors found in the Allwinner A64.
There's only one GPU OPP defined since the commit 1428f0c19f ("arm64: dts:
allwinner: a64: Run GPU at 432 MHz"), so defining only the critical thermal
trips makes sense for the A64's two GPU thermal zones.

Having these critical thermal trips defined ensures that no hot spots develop
inside the SoC die that exceed the maximum junction temperature.  That might
have been possible before, although quite unlikely, because the CPU and GPU
portions of the SoC are packed closely inside the SoC, so the overheating GPU
would inevitably result in the heat soaking into the CPU portion of the SoC,
causing the CPU thermal sensor to return high readings and trigger the CPU
critical thermal trips.  However, it's better not to rely on the heat soak
and have the critical GPU thermal trips properly defined instead.

Signed-off-by: Dragan Simic <dsimic@manjaro.org>
Tested-by: Norayr Chilingarian <norayr@arnet.am>
Link: https://lore.kernel.org/r/0a6110a7b27a050bd58ab3663087eecd8e873ac0.1724126053.git.dsimic@manjaro.org
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
History 2024-09-04 22:43:49 +08:00
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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 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.