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52a70098ff
cd-gpios uses a fixed delay, 200ms, before detecting card after the card is inserted. 200ms doesn't work for some platforms, so some host drivers added their own properties for parsing that from DT, for instance, dw_mmc and pxamci. That being said, it should also be tunable when using cd-gpios. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Reviewed-by: Rob Herring <robh@kernel.org> 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.
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.