0001 # SPDX-License-Identifier: GPL-2.0
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/iio/adc/adi,ad7949.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: Analog Devices AD7949/AD7682/AD7689 analog to digital converters
0008
0009 maintainers:
0010 - Charles-Antoine Couret <charles-antoine.couret@essensium.com>
0011
0012 description: |
0013 Specifications on the converters can be found at:
0014 AD7949:
0015 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7949.pdf
0016 AD7682/AD7698:
0017 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7682_7689.pdf
0018
0019 properties:
0020 compatible:
0021 enum:
0022 - adi,ad7682
0023 - adi,ad7689
0024 - adi,ad7949
0025
0026 reg:
0027 maxItems: 1
0028
0029 vrefin-supply:
0030 description:
0031 Buffered ADC reference voltage supply.
0032
0033 vref-supply:
0034 description:
0035 Unbuffered ADC reference voltage supply.
0036
0037 adi,internal-ref-microvolt:
0038 description: |
0039 Internal reference voltage selection in microvolts.
0040
0041 If no internal reference is specified, the channel will default to the
0042 external reference defined by vrefin-supply (or vref-supply).
0043 vrefin-supply will take precedence over vref-supply if both are defined.
0044
0045 If no supplies are defined, the reference selection will default to
0046 4096mV internal reference.
0047
0048 enum: [2500000, 4096000]
0049 default: 4096000
0050
0051
0052 spi-max-frequency: true
0053
0054 '#io-channel-cells':
0055 const: 1
0056
0057 '#address-cells':
0058 const: 1
0059
0060 '#size-cells':
0061 const: 0
0062
0063 required:
0064 - compatible
0065 - reg
0066
0067 additionalProperties: false
0068
0069 examples:
0070 - |
0071 spi {
0072 #address-cells = <1>;
0073 #size-cells = <0>;
0074
0075 adc@0 {
0076 #address-cells = <1>;
0077 #size-cells = <0>;
0078
0079 compatible = "adi,ad7949";
0080 reg = <0>;
0081 vref-supply = <&vdd_supply>;
0082 };
0083
0084 adc@1 {
0085 #address-cells = <1>;
0086 #size-cells = <0>;
0087
0088 compatible = "adi,ad7949";
0089 reg = <1>;
0090 vrefin-supply = <&vdd_supply>;
0091 };
0092
0093 adc@2 {
0094 #address-cells = <1>;
0095 #size-cells = <0>;
0096
0097 compatible = "adi,ad7949";
0098 reg = <2>;
0099 adi,internal-ref-microvolt = <4096000>;
0100 };
0101 };
0102 ...
