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Renesas RZ/T2H (R9A09G077) and RZ/N2H (R9A09G087) SoCs have a more complicated algorithm for calculating the optimal SPI transfer frequency compared to RZ/V2H, as the clock from which the SPI frequency is generated supports multiple dividers. Cache the requested transfer frequency and skip calling rzv2h_rspi_setup_clock() if it matches the last used one to prepare for adding support for variable clock frequency handling. Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com> Link: https://patch.msgid.link/20251119161434.595677-6-cosmin-gabriel.tanislav.xa@renesas.com Signed-off-by: Mark Brown <broonie@kernel.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.