Aditya Swarup 80d0f76588 drm/i915/adl_s: Configure DPLL for ADL-S
Add changes for configuring DPLL for ADL-S
- Reusing DG1 DPLL 2 & DPLL 3 for ADL-S
- Extend CNL macro to choose DPLL_ENABLE
  for ADL-S.
- Select CFGCR0 and CFGCR1 for ADL-S plls.

On BSpec: 53720 PLL arrangement dig for adls:
DPLL2 cfgcr is programmed using _ADLS_DPLL3_CFGCR(0/1)
DPLL3 cfgcr is programmed using _ADLS_DPLL4_CFGCR(0/1)

v2 (Lucas): add missing update_ref_clks

Bspec: 50288
Bspec: 50289
Bspec: 49443

v3 : Adding another bit to HDPORT_DPLL_USED_MASK bitfield
for DPLL3_USED.(mdroper)

Bspec: 53707

v4:  BSpec 53723 has been updated with note - DPLL2 is
controlled by DPLL4 CFGCR 0/1.(mdroper)

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Aditya Swarup <aditya.swarup@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210125140753.347998-6-aditya.swarup@intel.com
2021-01-26 07:10:45 -08:00
2021-01-03 15:55:30 -08:00

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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