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[ Upstream commit61d7437ed1] The AMD eMMC Controller can only use the tuned clock while in HS200 and HS400 mode. If we switch to a different mode, we need to disable the tuned clock. If we have previously performed tuning and switch back to HS200 or HS400, we can re-enable the tuned clock. Previously the tuned clock was not getting disabled when switching to DDR52 which is part of the HS400 tuning sequence. Fixes:34597a3f60("mmc: sdhci-acpi: Add support for ACPI HID of AMD Controller with HS400") Signed-off-by: Raul E Rangel <rrangel@chromium.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Link: https://lore.kernel.org/r/20200819125832.v2.1.Ie8f0689ec9f449203328b37409d1cf06b565f331@changeid 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.