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The SpacemiT UART requires a bus clock to be enabled, in addition to it's "normal" core clock. Look up the optional bus clock by name, and if that's found, look up the core clock using the name "core". Supplying a bus clock is optional. If no bus clock is needed, the the first/only clock is used for the core clock. Signed-off-by: Alex Elder <elder@riscstar.com> Link: https://lore.kernel.org/r/20250409192213.1130181-3-elder@riscstar.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 reStructuredText 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.