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ADC inputs can be classified into a few different types according to how they measure the input signal, how restrained the signal is, and number of input pins. Even though datasheets tend to provide many details about their inputs and measurement procedures, it may not always be clear how to model those inputs into IIO channels. For example, some differential ADCs can have their inputs configured into pseudo-differential channels. In that configuration, only one input connects to the signal of interest as opposed to using two inputs of a differential input configuration. Datasheets sometimes also refer to pseudo-differential inputs as single-ended inputs even though they have distinct physical configuration and measurement procedure. Document consolidated ADC input types and how they are usually described and supported in device tree and IIO, respectively. Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com> Reviewed-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/e6ac2a595f06ba2d5ff0eb86e5895479c9dd797f.1739998491.git.marcelo.schmitt@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.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 reStructuredText 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.