[PATCH RFC 4/4] docs: iio: ad7380: add adaq4370-4 and adaq4380-4

Julien Stephan
2024-10-15T09:09:12Z

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: Julien Stephan <jstephan@baylibre.com>
---
Documentation/iio/ad7380.rst | 15 +++++++++++++++
1 file changed, 15 insertions(+)

diff --git a/Documentation/iio/ad7380.rst b/Documentation/iio/ad7380.rst
index 6f70b49b9ef2..eeffd19db642 100644
--- a/Documentation/iio/ad7380.rst
+++ b/Documentation/iio/ad7380.rst
@@ -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 3V
+internal reference derived from one of its supplies (``refin-supply``)
+
All other devices from ad738x family
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

@@ -121,6 +129,13 @@ 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 configurable gain in front of each adc. The appropriate gain
+is selectable from device tree using the ``adi,gain-milli`` property.
+
Unimplemented features
----------------------

--
2.46.0