1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/iio/cdc/adi,ad7746.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: AD7746 24-Bit Capacitance-to-Digital Converter with Temperature Sensor 8 9maintainers: 10 - Michael Hennerich <michael.hennerich@analog.com> 11 12description: | 13 AD7746 24-Bit Capacitance-to-Digital Converter with Temperature Sensor 14 15 Specifications about the part can be found at: 16 https://www.analog.com/media/en/technical-documentation/data-sheets/ad7291.pdf 17 18properties: 19 compatible: 20 enum: 21 - adi,ad7745 22 - adi,ad7746 23 - adi,ad7747 24 25 reg: 26 maxItems: 1 27 28 adi,excitation-vdd-permille: 29 description: | 30 Set VDD per mille to be used as the excitation voltage. 31 $ref: /schemas/types.yaml#/definitions/uint32 32 enum: [125, 250, 375, 500] 33 34 adi,exca-output-en: 35 description: Enables the EXCA pin as the excitation output. 36 type: boolean 37 38 adi,exca-output-invert: 39 description: | 40 Inverts the excitation output in the EXCA pin. 41 Normally only one of the EXCX pins would be inverted, check the following 42 application notes for more details 43 https://www.analog.com/media/en/technical-documentation/application-notes/AN-1585.pdf 44 type: boolean 45 46 adi,excb-output-en: 47 description: Enables the EXCB pin as the excitation output. 48 type: boolean 49 50 adi,excb-output-invert: 51 description: Inverts the excitation output in the EXCB pin. 52 type: boolean 53 54required: 55 - compatible 56 - reg 57 58additionalProperties: false 59 60examples: 61 - | 62 i2c { 63 #address-cells = <1>; 64 #size-cells = <0>; 65 66 ad7746: cdc@48 { 67 compatible = "adi,ad7746"; 68 reg = <0x48>; 69 adi,excitation-vdd-permille = <125>; 70 71 adi,exca-output-en; 72 adi,exca-output-invert; 73 adi,excb-output-en; 74 adi,excb-output-invert; 75 }; 76 }; 77... 78