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| author | Julien Stephan <jstephan@baylibre.com> | 2024-10-30 14:44:29 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2024-11-09 10:42:03 +0000 |
| commit | 5e66d01f6083aa79d73efaa3b9ae65850a8929ca (patch) | |
| tree | d95e2329585d54209778b53c45c2eb2839d92798 | |
| parent | c904e6dcf4024e484cba6d61e379b53d802fa497 (diff) | |
| download | lwn-5e66d01f6083aa79d73efaa3b9ae65850a8929ca.tar.gz lwn-5e66d01f6083aa79d73efaa3b9ae65850a8929ca.zip | |
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: Julien Stephan <jstephan@baylibre.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20241030-ad7380-add-adaq4380-4-support-v4-5-864ff02babae@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| -rw-r--r-- | Documentation/iio/ad7380.rst | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Documentation/iio/ad7380.rst b/Documentation/iio/ad7380.rst index 6f70b49b9ef2..c46127700e14 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 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 ---------------------- |