c832078944
ULPS is a niche power-saving feature which only really affects command mode panels showing a static picture. I know the ULPS code used to work very long time ago, but I could not get it working with the current driver. As the ULPS code is not trivial and includes delayed work (so lots of chances for race issues), and just keeping DSI video and command mode panels working has been challenging enough even without ULPS, lets remove ULPS support. When the DSI driver works reliably for command and video mode displays, someone interested can work on ULPS and add it back if the power saving is substantial enough. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-83-tomi.valkeinen@ti.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.