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[ Upstream commitfeb40824d7] According to the App note[1] detailing the tuning algorithm, for temperatures < -20C, the initial tuning value should be min(largest value in LPW - 24, ceil(13/16 ratio of LPW)). The largest value in LPW is (max_window + 4 * (max_len - 1)) and not (max_window + 4 * max_len) itself. Fix this implementation. [1] http://www.ti.com/lit/an/spraca9b/spraca9b.pdf Fixes:961de0a856("mmc: sdhci-omap: Workaround errata regarding SDR104/HS200 tuning failures (i929)") Cc: stable@vger.kernel.org Signed-off-by: Faiz Abbas <faiz_abbas@ti.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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.