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| author | Trevor Gamblin <tgamblin@baylibre.com> | 2025-01-09 21:47:23 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2025-02-11 22:32:31 +0300 |
| commit | 67d63185db79fa5c17ddb948599b7e2f0e031003 (patch) | |
| tree | d8dd80c4b112741470f2f41a0f80bab651c9a6cd /tools/perf/scripts/python/parallel-perf.py | |
| parent | 192b669b930c16f493dde1b2a3e9b25e466fd624 (diff) | |
| download | linux-67d63185db79fa5c17ddb948599b7e2f0e031003.tar.xz | |
iio: adc: ad4695: add offload-based oversampling support
Add support for the ad4695's oversampling feature when SPI offload is
available. This allows the ad4695 to set oversampling ratios on a
per-channel basis, raising the effective-number-of-bits from 16
(OSR == 1) to 17 (4), 18 (16), or 19 (64) for a given sample (i.e. one
full cycle through the auto-sequencer). The logic for reading and
writing sampling frequency for a given channel is also adjusted based on
the current oversampling ratio.
The non-offload case isn't supported as there isn't a good way to
trigger the CNV pin in this mode. Support could be added in the future
if a use-case arises.
Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Tested-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250109-ad4695-oversampling-v2-1-a46ac487082c@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'tools/perf/scripts/python/parallel-perf.py')
0 files changed, 0 insertions, 0 deletions