diff options
| author | Angelo Dureghello <adureghello@baylibre.com> | 2025-03-10 18:39:53 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2025-03-11 19:09:17 +0000 |
| commit | 8dbeb413806f9f810d97d25284f585b201aa3bdc (patch) | |
| tree | d43bf34378809dd7b12ac407ea1f64a25ebbfabc | |
| parent | bbeaec81a03e71a34ebb0a61239c1aebb7b106df (diff) | |
doc: iio: ad7380: describe offload support
Add a section to the ad7380 documentation describing how to use the
driver with SPI offloading.
Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Link: https://patch.msgid.link/20250310-wip-bl-spi-offload-ad7380-v4-2-b184b37b7c72@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| -rw-r--r-- | Documentation/iio/ad7380.rst | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/iio/ad7380.rst b/Documentation/iio/ad7380.rst index 35232a0e3ad7..24a92a1c4371 100644 --- a/Documentation/iio/ad7380.rst +++ b/Documentation/iio/ad7380.rst @@ -178,6 +178,24 @@ Unimplemented features - Power down mode - CRC indication +SPI offload support +=================== + +To be able to achieve the maximum sample rate, the driver can be used with the +`AXI SPI Engine`_ to provide SPI offload support. + +.. _AXI SPI Engine: http://analogdevicesinc.github.io/hdl/projects/pulsar_adc/index.html + +When SPI offload is being used, some attributes will be different. + +* ``trigger`` directory is removed. +* ``in_voltage0_sampling_frequency`` attribute is added for setting the sample + rate. +* ``in_voltage0_sampling_frequency_available`` attribute is added for querying + the max sample rate. +* ``timestamp`` channel is removed. +* Buffer data format may be different compared to when offload is not used, + e.g. the ``in_voltage0_type`` attribute. Device buffers ============== |