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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/iio/adc/sigma-delta-modulator.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Sigma delta modulator
maintainers:
- Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
properties:
compatible:
description: |
"sd-modulator" can be used as a generic SD modulator,
if the modulator is not specified in the compatible list.
enum:
- sd-modulator
- ads1201
'#io-backend-cells':
const: 0
'#io-channel-cells':
const: 0
vref-supply:
description: Phandle to the vref input analog reference voltage.
dependencies:
vref-supply: [ '#io-backend-cells' ]
required:
- compatible
anyOf:
- required: ['#io-backend-cells']
- required: ['#io-channel-cells']
additionalProperties: false
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>;
};
- |
// Legacy binding example. SD modulator configured as an IIO channel provider
ads1201_1: adc {
compatible = "sd-modulator";
#io-channel-cells = <0>;
};
...
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