142 lines
4.3 KiB
YAML
142 lines
4.3 KiB
YAML
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# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/iio/adc/adi,ad7606.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Analog Devices AD7606 Simultaneous Sampling ADC
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maintainers:
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- Michael Hennerich <michael.hennerich@analog.com>
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description: |
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Analog Devices AD7606 Simultaneous Sampling ADC
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https://www.analog.com/media/en/technical-documentation/data-sheets/ad7606_7606-6_7606-4.pdf
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https://www.analog.com/media/en/technical-documentation/data-sheets/AD7606B.pdf
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https://www.analog.com/media/en/technical-documentation/data-sheets/AD7616.pdf
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properties:
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compatible:
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enum:
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- adi,ad7605-4
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- adi,ad7606-8
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- adi,ad7606-6
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- adi,ad7606-4
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- adi,ad7606b
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- adi,ad7616
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reg:
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maxItems: 1
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spi-cpha: true
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spi-cpol: true
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avcc-supply: true
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interrupts:
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maxItems: 1
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adi,conversion-start-gpios:
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description:
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Must be the device tree identifier of the CONVST pin.
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This logic input is used to initiate conversions on the analog
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input channels. As the line is active high, it should be marked
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GPIO_ACTIVE_HIGH.
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maxItems: 1
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reset-gpios:
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description:
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Must be the device tree identifier of the RESET pin. If specified,
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it will be asserted during driver probe. As the line is active high,
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it should be marked GPIO_ACTIVE_HIGH.
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maxItems: 1
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standby-gpios:
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description:
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Must be the device tree identifier of the STBY pin. This pin is used
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to place the AD7606 into one of two power-down modes, Standby mode or
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Shutdown mode. As the line is active low, it should be marked
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GPIO_ACTIVE_LOW.
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maxItems: 1
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adi,first-data-gpios:
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description:
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Must be the device tree identifier of the FRSTDATA pin.
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The FRSTDATA output indicates when the first channel, V1, is
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being read back on either the parallel, byte or serial interface.
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As the line is active high, it should be marked GPIO_ACTIVE_HIGH.
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maxItems: 1
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adi,range-gpios:
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description:
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Must be the device tree identifier of the RANGE pin. The polarity on
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this pin determines the input range of the analog input channels. If
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this pin is tied to a logic high, the analog input range is ±10V for
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all channels. If this pin is tied to a logic low, the analog input range
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is ±5V for all channels. As the line is active high, it should be marked
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GPIO_ACTIVE_HIGH.
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maxItems: 1
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adi,oversampling-ratio-gpios:
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description:
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Must be the device tree identifier of the over-sampling
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mode pins. As the line is active high, it should be marked
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GPIO_ACTIVE_HIGH.
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maxItems: 3
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adi,sw-mode:
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description:
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Software mode of operation, so far available only for ad7616 and ad7606b.
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It is enabled when all three oversampling mode pins are connected to
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high level. The device is configured by the corresponding registers. If the
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adi,oversampling-ratio-gpios property is defined, then the driver will set the
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oversampling gpios to high. Otherwise, it is assumed that the pins are hardwired
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to VDD.
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type: boolean
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required:
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- compatible
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- reg
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- spi-cpha
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- avcc-supply
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- interrupts
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- adi,conversion-start-gpios
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allOf:
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- $ref: /schemas/spi/spi-peripheral-props.yaml#
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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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spi0 {
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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,ad7606-8";
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reg = <0>;
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spi-max-frequency = <1000000>;
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spi-cpol;
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spi-cpha;
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avcc-supply = <&adc_vref>;
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interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
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interrupt-parent = <&gpio>;
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adi,conversion-start-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
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reset-gpios = <&gpio 27 GPIO_ACTIVE_HIGH>;
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adi,first-data-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
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adi,oversampling-ratio-gpios = <&gpio 18 GPIO_ACTIVE_HIGH>,
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<&gpio 23 GPIO_ACTIVE_HIGH>,
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<&gpio 26 GPIO_ACTIVE_HIGH>;
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standby-gpios = <&gpio 24 GPIO_ACTIVE_LOW>;
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adi,sw-mode;
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};
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};
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...
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