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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/iio/adc/adi,ad7779.yaml
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# 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,ad7779.yaml#

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$schema: http://devicetree.org/meta-schemas/core.yaml#

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title: Analog Devices AD777X family 8-Channel, 24-Bit, Simultaneous Sampling ADCs

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maintainers:

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  - Ramona Nechita <ramona.nechita@analog.com>

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description: |

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  The AD777X family consist of 8-channel, simultaneous sampling analog-to-

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  digital converter (ADC). Eight full Σ-Δ ADCs are on-chip. The

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  AD7771 provides an ultralow input current to allow direct sensor

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  connection. Each input channel has a programmable gain stage

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  allowing gains of 1, 2, 4, and 8 to map lower amplitude sensor

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  outputs into the full-scale ADC input range, maximizing the

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  dynamic range of the signal chain.

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  https://www.analog.com/media/en/technical-documentation/data-sheets/ad7770.pdf

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  https://www.analog.com/media/en/technical-documentation/data-sheets/ad7771.pdf

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  https://www.analog.com/media/en/technical-documentation/data-sheets/ad7779.pdf

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$ref: /schemas/spi/spi-peripheral-props.yaml#

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properties:

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  compatible:

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    enum:

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      - adi,ad7770

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      - adi,ad7771

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      - adi,ad7779

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  reg:

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    maxItems: 1

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  '#address-cells':

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    const: 1

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  '#size-cells':

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    const: 0

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  clocks:

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    maxItems: 1

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  avdd1-supply:

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    description: Front-End analog supply AVDD1. Can be used as conversion ref.

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  avdd2-supply:

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    description: AVDD2 Analog Supply from 2.2 V to 3.6 V.

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  avdd4-supply:

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    description: AVDD4 SAR Analog Supply and Reference Source.

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  interrupts:

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    minItems: 1

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    items:

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      - description: |

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          adc_rdy: Interrupt line for DRDY signal which indicates the end of

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          conversion independently of the interface selected to read back the

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          Σ-∆ conversion.

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      - description: |

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          Alert: The chip includes self diagnostic features to guarantee the

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          correct operation. If an error is detected, the ALERT pin is pulled

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          high to generate an external interruption to the controller.

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  interrupt-names:

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    minItems: 1

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    maxItems: 2

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    items:

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      enum:

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        - adc_rdy

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        - alert

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  start-gpios:

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    description:

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      Pin that controls start synchronization pulse.

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    maxItems: 1

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  reset-gpios:

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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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  - clocks

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  - interrupts

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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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    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,ad7779";

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          reg = <0>;

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          start-gpios = <&gpio0 87 GPIO_ACTIVE_LOW>;

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          reset-gpios = <&gpio0 93 GPIO_ACTIVE_LOW>;

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          interrupt-parent = <&intc>;

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          interrupts = <0 56 IRQ_TYPE_LEVEL_HIGH>;

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          interrupt-names = "adc_rdy";

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          clocks = <&adc_clk>;

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        };

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    };

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...

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