0001 # SPDX-License-Identifier: GPL-2.0
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/iio/adc/adi,ad7768-1.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: Analog Devices AD7768-1 ADC device driver
0008
0009 maintainers:
0010 - Michael Hennerich <michael.hennerich@analog.com>
0011
0012 description: |
0013 Datasheet at:
0014 https://www.analog.com/media/en/technical-documentation/data-sheets/ad7768-1.pdf
0015
0016 properties:
0017 compatible:
0018 const: adi,ad7768-1
0019
0020 reg:
0021 maxItems: 1
0022
0023 clocks:
0024 maxItems: 1
0025
0026 clock-names:
0027 const: mclk
0028
0029 interrupts:
0030 maxItems: 1
0031
0032 '#address-cells':
0033 const: 1
0034
0035 '#size-cells':
0036 const: 0
0037
0038 vref-supply:
0039 description:
0040 ADC reference voltage supply
0041
0042 adi,sync-in-gpios:
0043 maxItems: 1
0044 description:
0045 Enables synchronization of multiple devices that require simultaneous
0046 sampling. A pulse is always required if the configuration is changed
0047 in any way, for example if the filter decimation rate changes.
0048 As the line is active low, it should be marked GPIO_ACTIVE_LOW.
0049
0050 reset-gpios:
0051 maxItems: 1
0052
0053 spi-max-frequency: true
0054
0055 spi-cpol: true
0056
0057 spi-cpha: true
0058
0059 "#io-channel-cells":
0060 const: 1
0061
0062 required:
0063 - compatible
0064 - reg
0065 - clocks
0066 - clock-names
0067 - vref-supply
0068 - spi-cpol
0069 - spi-cpha
0070 - adi,sync-in-gpios
0071
0072 patternProperties:
0073 "^channel@([0-9]|1[0-5])$":
0074 type: object
0075 description: |
0076 Represents the external channels which are connected to the device.
0077
0078 properties:
0079 reg:
0080 maxItems: 1
0081 description: |
0082 The channel number.
0083
0084 label:
0085 description: |
0086 Unique name to identify which channel this is.
0087 required:
0088 - reg
0089 additionalProperties: false
0090
0091 additionalProperties: false
0092
0093 examples:
0094 - |
0095 #include <dt-bindings/interrupt-controller/irq.h>
0096 #include <dt-bindings/gpio/gpio.h>
0097 spi {
0098 #address-cells = <1>;
0099 #size-cells = <0>;
0100
0101 adc@0 {
0102 compatible = "adi,ad7768-1";
0103 reg = <0>;
0104 spi-max-frequency = <2000000>;
0105 spi-cpol;
0106 spi-cpha;
0107 vref-supply = <&adc_vref>;
0108 interrupts = <25 IRQ_TYPE_EDGE_RISING>;
0109 interrupt-parent = <&gpio>;
0110 adi,sync-in-gpios = <&gpio 22 GPIO_ACTIVE_LOW>;
0111 reset-gpios = <&gpio 27 GPIO_ACTIVE_LOW>;
0112 clocks = <&ad7768_mclk>;
0113 clock-names = "mclk";
0114
0115 #address-cells = <1>;
0116 #size-cells = <0>;
0117
0118 channel@0 {
0119 reg = <0>;
0120 label = "channel_0";
0121 };
0122 };
0123 };
0124 ...
