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When auto calibration timeouts, calibration is disabled and fail-safe drive strength values are programmed based on the signal voltage. Different fail-safe drive strength values based on voltage are applicable only for SoCs supporting 3V3 and 1V8 pad controls. So, this patch avoids reading these properties from the device tree for SoCs not using pad controls and the warning of missing properties will not show up on these SoC platforms. Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com> Tested-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Link: https://lore.kernel.org/r/1590005337-1087-1-git-send-email-skomatineni@nvidia.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.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.