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141 lines
4.3 KiB
141 lines
4.3 KiB
# 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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- Beniamin Bia <[email protected]> |
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- Stefan Popa <[email protected]> |
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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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spi-max-frequency: 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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additionalProperties: 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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