Add device tree binding documentation for AD7746 cdc in YAML format. Signed-off-by: Lucas Stankus <lucas.p.stankus@xxxxxxxxx> --- A minor note about the adi,excitation-vdd-permille property. Jonathan suggested the name to be adi,excitation-vdd-milicent, but I was unsure of the milicent naming. With a quick search I found out that the common way to call a thousandth is 'per mille'[1], but I didn't find any use of it in the kernel documentation. Any thoughts about it? [1] https://en.wikipedia.org/wiki/Per_mille .../bindings/iio/cdc/adi,ad7746.yaml | 73 +++++++++++++++++++ 1 file changed, 73 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..a2a7eee674ba --- /dev/null +++ b/Documentation/devicetree/bindings/iio/cdc/adi,ad7746.yaml @@ -0,0 +1,73 @@ +# 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: + 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. + 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; + }; + }; +... -- 2.31.1
