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9c95f96392
Some users are suffering with PSR2 issues that are under debug or issues that were root caused to panel firmware bugs, to make life of those users easier here adding a option to disable PSR2 with kernel parameters so they can still benefit from PSR1 power savings. Using the same enable_psr that is current used to turn the whole feature on or off and allowing user to select up to what PSR version it should enable. Right now users only set this parameter to 0 when they want to disable PSR1 and PSR2 or don't add it at all leaving it to per-chip behavior so it should not cause a bad impact on users. v2: - changing enable_psr values (Ville and Rodrigo) Link: https://gitlab.freedesktop.org/drm/intel/-/issues/4951 Cc: Jouni Högander <jouni.hogander@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: José Roberto de Souza <jose.souza@intel.com> Reviewed-by: Jouni Högander <jouni.hogander@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220224202523.993560-1-jose.souza@intel.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.