# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id:
http://devicetree.org/schemas/iio/cdc/adi,ad7746.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: AD7746 24-Bit Capacitance-to-Digital Converter with Temperature Sensor
maintainers:
- Michael Hennerich <michael.hennerich@analog.com>
description: |
AD7746 24-Bit Capacitance-to-Digital Converter with Temperature Sensor
Specifications about the part can be found at:
https://www.analog.com/media/en/technical-documentation/data-sheets/ad7291.pdf
properties:
compatible:
enum:
- adi,ad7745
- adi,ad7746
- adi,ad7747
reg:
maxItems: 1
adi,excitation-vdd-permille:
description: |
Set VDD per mille to be used as the excitation voltage.
$ref: /schemas/types.yaml#/definitions/uint32
enum: [125, 250, 375, 500]
adi,exca-output-en:
description: Enables the EXCA pin as the excitation output.
type: boolean
adi,exca-output-invert:
description: |
Inverts the excitation output in the EXCA pin.
Normally only one of the EXCX pins would be inverted, check the following
application notes for more details
https://www.analog.com/media/en/technical-documentation/application-notes/AN-1585.pdf
type: boolean
adi,excb-output-en:
description: Enables the EXCB pin as the excitation output.
type: boolean
adi,excb-output-invert:
description: Inverts the excitation output in the EXCB pin.
type: boolean
required:
- compatible
- reg
additionalProperties: false
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
ad7746: cdc@48 {
compatible = "adi,ad7746";
reg = <0x48>;
adi,excitation-vdd-permille = <125>;
adi,exca-output-en;
adi,exca-output-invert;
adi,excb-output-en;
adi,excb-output-invert;
};
};
...
