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b70ad01a22
A new programming step was added to combo and TC PLL sequences. If override_AFC_startup is set in VBT, driver should overwrite AFC_startup value to 0x0 or 0x7 in PLL's div0 register. The current understating is that only TGL needs this and all other display 12 and newer platforms will have a older VBT or a newer VBT with override_AFC_startup set to 0 but in any case there is a drm_warn_on_once() to let us know if this is not true. v2: - specification updated, now AFC can be override to 0x0 or 0x7 - not using a union for div0 (Imre) - following previous wrong vbt naming: bits instead of bytes (Imre) BSpec: 49204 BSpec: 20122 BSpec: 49968 BSpec: 71360 Cc: Imre Deak <imre.deak@intel.com> Cc: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Imre Deak <imre.deak@intel.com> Signed-off-by: José Roberto de Souza <jose.souza@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220216134059.25348-1-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.