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Thermal zones located in power domains may not be accessible when the domain is powergated. In this situation, reading the temperature will return -BPMP_EFAULT. When evaluating trips, BPMP will internally use -256C as the temperature for offline zones. For smooth operation, for offline zones, return -EAGAIN when reading the temperature and allow registration of zones even if they are offline during probe. Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20230330094904.2589428-1-cyndis@kapsi.fi
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.