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Diffstat (limited to 'Documentation/devicetree/bindings/iio/adc/adi,ad7091r5.yaml')
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diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7091r5.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7091r5.yaml new file mode 100644 index 000000000000..ddec9747436c --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7091r5.yaml @@ -0,0 +1,128 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/adi,ad7091r5.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD7091R-2/-4/-5/-8 Multi-Channel 12-Bit ADCs + +maintainers: + - Michael Hennerich <michael.hennerich@analog.com> + - Marcelo Schmitt <marcelo.schmitt@analog.com> + +description: | + Analog Devices AD7091R5 4-Channel 12-Bit ADC supporting I2C interface + https://www.analog.com/media/en/technical-documentation/data-sheets/ad7091r-5.pdf + Analog Devices AD7091R-2/AD7091R-4/AD7091R-8 2-/4-/8-Channel 12-Bit ADCs + supporting SPI interface + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7091R-2_7091R-4_7091R-8.pdf + +properties: + compatible: + enum: + - adi,ad7091r2 + - adi,ad7091r4 + - adi,ad7091r5 + - adi,ad7091r8 + + reg: + maxItems: 1 + + vdd-supply: + description: + Provide VDD power to the sensor (VDD range is from 2.7V to 5.25V). + + vdrive-supply: + description: + Determines the voltage level at which the interface logic will operate. + The V_drive voltage range is from 1.8V to 5.25V and must not exceed VDD by + more than 0.3V. + + vref-supply: + description: + Phandle to the vref power supply + + convst-gpios: + description: + GPIO connected to the CONVST pin. + This logic input is used to initiate conversions on the analog + input channels. + maxItems: 1 + + reset-gpios: + maxItems: 1 + + interrupts: + description: + Interrupt for signaling when conversion results exceed the high limit for + ADC readings or fall below the low limit for them. Interrupt source must + be attached to ALERT/BUSY/GPO0 pin. + maxItems: 1 + +required: + - compatible + - reg + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + + # AD7091R-2 does not have ALERT/BUSY/GPO pin + - if: + properties: + compatible: + contains: + enum: + - adi,ad7091r2 + then: + properties: + interrupts: false + + - if: + properties: + compatible: + contains: + enum: + - adi,ad7091r2 + - adi,ad7091r4 + - adi,ad7091r8 + then: + required: + - convst-gpios + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/interrupt-controller/irq.h> + i2c { + #address-cells = <1>; + #size-cells = <0>; + + adc@2f { + compatible = "adi,ad7091r5"; + reg = <0x2f>; + + interrupts = <25 IRQ_TYPE_EDGE_FALLING>; + interrupt-parent = <&gpio>; + }; + }; + - | + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/interrupt-controller/irq.h> + spi { + #address-cells = <1>; + #size-cells = <0>; + + adc@0 { + compatible = "adi,ad7091r8"; + reg = <0x0>; + spi-max-frequency = <1000000>; + vref-supply = <&adc_vref>; + convst-gpios = <&gpio 25 GPIO_ACTIVE_LOW>; + reset-gpios = <&gpio 27 GPIO_ACTIVE_LOW>; + interrupts = <22 IRQ_TYPE_EDGE_FALLING>; + interrupt-parent = <&gpio>; + }; + }; +... |