Matt Roper 93e2323b5c drm/i915/rkl: Add power well support
RKL power wells are similar to TGL power wells, but have some important
differences:

 * PG1 now has pipe A's VDSC (rather than sticking it in PG2)
 * PG2 no longer exists
 * DDI-C (aka TC-1) moves from PG1 -> PG3
 * PG5 no longer exists due to the lack of a fourth pipe

Also note that what we refer to as 'DDI-C' and 'DDI-D' need to actually
be programmed as TC-1 and TC-2 even though this platform doesn't have TC
outputs.

Bspec: 49234
Cc: Imre Deak <imre.deak@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Anshuman Gupta <anshuman.gupta@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Anshuman Gupta <anshuman.gupta@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200504225227.464666-9-matthew.d.roper@intel.com
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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.
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