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64ce7d4348
This adds support for the chain mode of the AD7944 ADC. This mode allows multiple ADCs to be daisy-chained together. Data from all of the ADCs in is read by reading multiple words from the first ADC in the chain. Each chip in the chain adds an extra IIO input voltage channel to the IIO device. Only the wiring configuration where the SPI controller CS line is connected to the CNV pin of all of the ADCs in the chain is supported in this patch. Signed-off-by: David Lechner <dlechner@baylibre.com> Link: https://lore.kernel.org/r/20240425-iio-ad7944-chain-mode-v1-1-9d9220ff21e1@baylibre.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.