Commit e7385105 authored by Olivier Moysan's avatar Olivier Moysan Committed by Jonathan Cameron
Browse files

dt-bindings: iio: add vref support to sd modulator 



Allow to specify the reference voltage used by the SD modulator.
When the SD modulator is defined as an IIO backend, the reference
voltage can be used to evaluate scaling information of the IIO device.
The reference voltage is not used otherwise.

Signed-off-by: default avatarOlivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: default avatarRob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20240730084640.1307938-7-olivier.moysan@foss.st.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 281b4318

Documentation/devicetree/bindings/iio/adc/sigma-delta-modulator.yaml

+7 −0
Original line number Diff line number Diff line
@@ -24,6 +24,12 @@ properties: 
  '#io-channel-cells':

    const: 0



  vref-supply:

    description: Phandle to the vref input analog reference voltage.



dependencies:

  vref-supply: [ '#io-backend-cells' ]



required:

  - compatible
@@ -38,6 +44,7 @@ examples: 
    // Backend binding example. SD modulator configured as an IIO backend device

    ads1201_0: adc {

      compatible = "sd-modulator";

      vref-supply = <&vdd_adc>;

      #io-backend-cells = <0>;

    };