Add device tree binding documentation for AD7746 cdc in YAML format. Signed-off-by: Lucas Stankus <lucas.p.stankus@xxxxxxxxx> --- .../bindings/iio/cdc/adi,ad7746.yaml | 79 +++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/cdc/adi,ad7746.yaml diff --git a/Documentation/devicetree/bindings/iio/cdc/adi,ad7746.yaml b/Documentation/devicetree/bindings/iio/cdc/adi,ad7746.yaml new file mode 100644 index 000000000000..5de86f4374e1 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/cdc/adi,ad7746.yaml @@ -0,0 +1,79 @@ +# 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@xxxxxxxxxx> + +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: + description: | + Physiscal address of the EXC set-up register. + maxItems: 1 + + adi,excitation-voltage-level: + description: | + Select the reference excitation voltage level used by the device. + With VDD being the power supply voltage, valid values are: + 0: +-VDD / 8 + 1: +-VDD / 4 + 2: +-VDD * 3 / 8 + 3: +-VDD / 2 + If left empty option 3 is selected. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1, 2, 3] + + adi,exca-output: + description: | + Sets the excitation output in the exca pin. + Valid values are: + 0: Disables output in the EXCA pin. + 1: Enables EXCA pin as the excitation output. + 2: Enables EXCA pin as the inverted excitation output. + If left empty the output is disabled. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1, 2] + + adi,excb-output: + description: | + Analoguos to the adi,exca-output for the EXCB pin. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1, 2] + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + ad7746: cdc@0 { + compatible = "adi,ad7746"; + reg = <0>; + adi,excitation-voltage-level = <3>; + adi,exca-output = <0>; + adi,excb-output = <0>; + }; + }; +... -- 2.31.1
