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This device does not support changing baud, parity, data bits, stop bits, or detecting breaks. Disable "changing" these settings to prevent their termios from diverging from the actual state of the uart. In order to determine the correct parameters to enforce, we read the various new devicetree parameters to discover how the uart was configured when it was synthesized. The defaults match ulite_console_setup. xlnx,use-parity, xlnx,odd-parity, and xlnx,data-bits are optional since there were in-tree users (and presumably out-of-tree users) who did not set them. Signed-off-by: Sean Anderson <sean.anderson@seco.com> Link: https://lore.kernel.org/r/20210826192154.3202269-5-sean.anderson@seco.com 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.