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# 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>;
};
};
...
|
