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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/iio/adc/adi,ad7091r5.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Analog Devices AD7091R-2/-4/-5/-8 Multi-Channel 12-Bit ADCs8 9maintainers:10 - Michael Hennerich <michael.hennerich@analog.com>11 - Marcelo Schmitt <marcelo.schmitt@analog.com>12 13description: |14 Analog Devices AD7091R5 4-Channel 12-Bit ADC supporting I2C interface15 https://www.analog.com/media/en/technical-documentation/data-sheets/ad7091r-5.pdf16 Analog Devices AD7091R-2/AD7091R-4/AD7091R-8 2-/4-/8-Channel 12-Bit ADCs17 supporting SPI interface18 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7091R-2_7091R-4_7091R-8.pdf19 20properties:21 compatible:22 enum:23 - adi,ad7091r224 - adi,ad7091r425 - adi,ad7091r526 - adi,ad7091r827 28 reg:29 maxItems: 130 31 vdd-supply:32 description:33 Provide VDD power to the sensor (VDD range is from 2.7V to 5.25V).34 35 vdrive-supply:36 description:37 Determines the voltage level at which the interface logic will operate.38 The V_drive voltage range is from 1.8V to 5.25V and must not exceed VDD by39 more than 0.3V.40 41 vref-supply:42 description:43 Phandle to the vref power supply44 45 convst-gpios:46 description:47 GPIO connected to the CONVST pin.48 This logic input is used to initiate conversions on the analog49 input channels.50 maxItems: 151 52 reset-gpios:53 maxItems: 154 55 interrupts:56 description:57 Interrupt for signaling when conversion results exceed the high limit for58 ADC readings or fall below the low limit for them. Interrupt source must59 be attached to ALERT/BUSY/GPO0 pin.60 maxItems: 161 62required:63 - compatible64 - reg65 66allOf:67 - $ref: /schemas/spi/spi-peripheral-props.yaml#68 69 # AD7091R-2 does not have ALERT/BUSY/GPO pin70 - if:71 properties:72 compatible:73 contains:74 enum:75 - adi,ad7091r276 then:77 properties:78 interrupts: false79 80 - if:81 properties:82 compatible:83 contains:84 enum:85 - adi,ad7091r286 - adi,ad7091r487 - adi,ad7091r888 then:89 required:90 - convst-gpios91 92unevaluatedProperties: false93 94examples:95 - |96 #include <dt-bindings/gpio/gpio.h>97 #include <dt-bindings/interrupt-controller/irq.h>98 i2c {99 #address-cells = <1>;100 #size-cells = <0>;101 102 adc@2f {103 compatible = "adi,ad7091r5";104 reg = <0x2f>;105 106 interrupts = <25 IRQ_TYPE_EDGE_FALLING>;107 interrupt-parent = <&gpio>;108 };109 };110 - |111 #include <dt-bindings/gpio/gpio.h>112 #include <dt-bindings/interrupt-controller/irq.h>113 spi {114 #address-cells = <1>;115 #size-cells = <0>;116 117 adc@0 {118 compatible = "adi,ad7091r8";119 reg = <0x0>;120 spi-max-frequency = <1000000>;121 vref-supply = <&adc_vref>;122 convst-gpios = <&gpio 25 GPIO_ACTIVE_LOW>;123 reset-gpios = <&gpio 27 GPIO_ACTIVE_LOW>;124 interrupts = <22 IRQ_TYPE_EDGE_FALLING>;125 interrupt-parent = <&gpio>;126 };127 };128...129