On Tue, 27 Jul 2021 19:29:05 -0400, Liam Beguin wrote:

From: Liam Beguin <redacted>

Add bindings documentation describing per channel reference voltage
selection.
This adds the adi,internal-ref-microvolt property, and child nodes for
each channel. This is required to properly configure the ADC sample
request based on which reference source should be used for the
calculation.

Signed-off-by: Liam Beguin <redacted>
---
 .../bindings/iio/adc/adi,ad7949.yaml          | 69 +++++++++++++++++--
 1 file changed, 65 insertions(+), 4 deletions(-)

Reviewed-by: Rob Herring <robh@kernel.org>