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e9ffa12e02
The shift and w value in rcar_canfd_setrnc() are dictated by the
field width:
- R-Car Gen4 packs 2 values in a 32-bit word, using a field width
of 16 bits,
- R-Car Gen3 packs up to 4 values in a 32-bit word, using a field
width of 8 bits.
Add rnc_field_width variable to struct rcar_canfd_hw_info to handle this
difference. The rnc_stride is 32 / rnc_field_width and the index parameter
w is calculated by ch / rnc_stride. The shift value in rcar_canfd_setrnc()
is computed by using (32 - (ch % rnc_stride + 1) * rnc_field_width).
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://patch.msgid.link/20250417054320.14100-10-biju.das.jz@bp.renesas.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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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.