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566ed24a0a
The FRQCRB register on R-Car V3U, V4H and V4M do in addition to the
already supported KICK bit contain settings for the frequency division
ratios for the clocks ZTR, ZT, ZS and ZG. It is however not possible to
use the latter when registering a Z clock with the DEF_GEN4_Z() macro.
This change adds support for that by extending the existing practice of
treating the bit field offsets at multiples of 32 to map to a different
register. With this new mapping in palace
bit offsets 0 - 31 map to FRQCRC0
bit offsets 32 - 63 map to FRQCRC1
bit offsets 64 - 95 map to FRQCRB
The change also adds an error condition to return an error if an unknown
offset is used.
The KICK bit defined in FRQCRB and already supported covers all three
registers and no addition to how it is handled are needed.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20251106211604.2766465-3-niklas.soderlund+renesas@ragnatech.se
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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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.