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