Commit 5e66d01f authored by Julien Stephan's avatar Julien Stephan Committed by Jonathan Cameron
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docs: iio: ad7380: add adaq4370-4 and adaq4380-4 



Adding documentation for adaq4370-4 and adaq4380-4 supported devices. In
particular, document the reference voltage mechanism and the gain
parameter that are specific to adaq devices.

Signed-off-by: default avatarJulien Stephan <jstephan@baylibre.com>
Reviewed-by: default avatarDavid Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20241030-ad7380-add-adaq4380-4-support-v4-5-864ff02babae@baylibre.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent c904e6dc

Documentation/iio/ad7380.rst

+16 −0
Original line number Diff line number Diff line
@@ -27,6 +27,8 @@ The following chips are supported by this driver: 
* `AD7386-4 <https://www.analog.com/en/products/ad7386-4.html>`_

* `AD7387-4 <https://www.analog.com/en/products/ad7387-4.html>`_

* `AD7388-4 <https://www.analog.com/en/products/ad7388-4.html>`_

* `ADAQ4370-4 <https://www.analog.com/en/products/adaq4370-4.html>`_

* `ADAQ4380-4 <https://www.analog.com/en/products/adaq4380-4.html>`_





Supported features
@@ -47,6 +49,12 @@ ad7380-4 
ad7380-4 supports only an external reference voltage (2.5V to 3.3V). It must be

declared in the device tree as ``refin-supply``.



ADAQ devices

~~~~~~~~~~~~



adaq4370-4 and adaq4380-4 don't have an external reference, but use a 3.3V

internal reference derived from one of its supplies (``refin-supply``)



All other devices from ad738x family

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -121,6 +129,14 @@ Example for AD7386/7/8 (2 channels parts): 


When enabling sequencer mode, the effective sampling rate is divided by two.



Gain (ADAQ devices only)

~~~~~~~~~~~~~~~~~~~~~~~~



ADAQ devices have a pin selectable gain in front of each ADC. The appropriate

gain is selectable from device tree using the ``adi,gain-milli`` property.

Refer to the typical connection diagrams section of the datasheet for pin

wiring.



Unimplemented features

----------------------