From e7385105553a38d5d347e565c2a1b654490a8d98 Mon Sep 17 00:00:00 2001 From: Olivier Moysan Date: Tue, 30 Jul 2024 10:46:36 +0200 Subject: [PATCH] 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: Olivier Moysan Reviewed-by: Rob Herring (Arm) Link: https://patch.msgid.link/20240730084640.1307938-7-olivier.moysan@foss.st.com Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/adc/sigma-delta-modulator.yaml | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/adc/sigma-delta-modulator.yaml b/Documentation/devicetree/bindings/iio/adc/sigma-delta-modulator.yaml index 7d33c4e09905c..c3a116427dc3b 100644 --- a/Documentation/devicetree/bindings/iio/adc/sigma-delta-modulator.yaml +++ b/Documentation/devicetree/bindings/iio/adc/sigma-delta-modulator.yaml @@ -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>; }; -- 2.47.3