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To convert saradc value to voltage, we have the following formula: voltage = (raw saradc value * saradc voltage ref voltage) / 1024 Take RK3399 excavator as an example, the saradc voltage reg voltage is 1800000uv, the formula can simplify to : voltage = raw saradc value * 1750 uv Change-Id: I8703bcdc2e2b0305118dd9f5777533e8fac7c5a1 Signed-off-by: Simon Xue <xxm@rock-chips.com>
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.