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Add early console support which relies on the bootloader for the initialization of the UART. Please note, that the compatibles are taken from at91-usart MFD driver. Tested-by: Claudiu Beznea <claudiu.beznea@microchip.com> Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com> Acked-by: Richard Genoud <richard.genoud@gmail.com> Signed-off-by: Michael Walle <michael@walle.cc> Link: https://lore.kernel.org/r/20220217094620.1148571-1-michael@walle.cc Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.