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b9a4fa6978
Even the FCH SSC registers provides certain level of information about the s0ix entry and exit times which comes handy when the SMU fails to report the statistics via the mailbox communication. This information is captured via a new debugfs file "s0ix_stats". A non-zero entry in this counters would mean that the system entered the s0ix state. If s0ix entry time and exit time don't change during suspend to idle, the silicon has not entered the deepest state. Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20210629084803.248498-6-Shyam-sundar.S-k@amd.com Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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.