f2f4d2b86f
NVIDIA Tegra SoCs have a power domains topology such that child domains only clamp a power rail, while parent domain controls shared performance state of the multiple child domains. In this case child's domain doesn't need to have OPP table. Hence we want to allow children power domains to pass performance state to the parent domain if child's domain doesn't have OPP table. The dev_pm_opp_xlate_performance_state() gets src_table=NULL if a child power domain doesn't have OPP table and in this case we should pass the performance state to the parent domain. Tested-by: Peter Geis <pgwipeout@gmail.com> Tested-by: Nicolas Chauvet <kwizart@gmail.com> Tested-by: Matt Merhar <mattmerhar@protonmail.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Viresh Kumar <viresh.kumar@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 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.