iio: adc: versal-sysmon: add oversampling support

Add support for reading and writing the oversampling ratio through
the IIO oversampling_ratio attribute. The hardware supports averaging
2, 4, 8, or 16 samples, plus a ratio of 1 (no averaging).

Temperature and supply channels share oversampling configuration at
the type level (all temperature channels share one ratio, all supply
channels share another), exposed through info_mask_shared_by_type.

The hardware encoding uses sample_count / 2 in a 4-bit field within
the CONFIG register. Per-channel averaging enable registers must also
be updated to activate or deactivate averaging.

Signed-off-by: Salih Erim <salih.erim@amd.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

0 files changed, 0 insertions, 0 deletions