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[ Upstream commit 9c174e4dacee9fb2014a4ffc953d79a5707b77e4 ] Wrong actual clock reported, if the SD clock division ratio is other than 1:1(bits DIV[7:0] in SD_CLK_CTRL are set to 11111111). On high speed mode, cat /sys/kernel/debug/mmc1/ios Without the patch: clock: 50000000 Hz actual clock: 200000000 Hz After the fix: clock: 50000000 Hz actual clock: 50000000 Hz Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20250629203859.170850-1-biju.das.jz@bp.renesas.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Sasha Levin <sashal@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 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.