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    Subject[PATCH v2 5/7] dt-bindings: iio: Add binding documentation for AD7091R-8
    Date
    Add device tree binding documentation for AD7091R-8.

    Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
    ---
    .../bindings/iio/adc/adi,ad7091r8.yaml | 101 ++++++++++++++++++
    MAINTAINERS | 1 +
    2 files changed, 102 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7091r8.yaml

    diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7091r8.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7091r8.yaml
    new file mode 100644
    index 000000000000..3f09f3091a90
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7091r8.yaml
    @@ -0,0 +1,101 @@
    +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
    +%YAML 1.2
    +---
    +$id: http://devicetree.org/schemas/iio/adc/adi,ad7091r8.yaml#
    +$schema: http://devicetree.org/meta-schemas/core.yaml#
    +
    +title: Analog Devices AD7091R8 8-Channel 12-Bit ADC
    +
    +maintainers:
    + - Marcelo Schmitt <marcelo.schmitt@analog.com>
    +
    +description: |
    + Analog Devices AD7091R-8 8-Channel 12-Bit ADC
    + 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,ad7091r8
    +
    + reg:
    + maxItems: 1
    +
    + vref-supply: true
    +
    + spi-max-frequency: true
    +
    + adi,conversion-start-gpios:
    + description:
    + Device tree identifier of the CONVST pin.
    + This logic input is used to initiate conversions on the analog
    + input channels.
    + maxItems: 1
    +
    + reset-gpios:
    + maxItems: 1
    +
    + interrupts:
    + maxItems: 1
    +
    +patternProperties:
    + "^channel@[0-7]$":
    + $ref: adc.yaml
    + type: object
    + description: Represents the external channels which are connected to the ADC.
    +
    + properties:
    + reg:
    + minimum: 0
    + maximum: 7
    +
    + required:
    + - reg
    +
    +required:
    + - compatible
    + - reg
    + - adi,conversion-start-gpios
    +
    +allOf:
    + - $ref: /schemas/spi/spi-peripheral-props.yaml#
    +
    + # AD7091R-2 does not have ALERT/BUSY/GPO pin
    + - if:
    + properties:
    + compatible:
    + contains:
    + enum:
    + - adi,ad7091r4
    + - adi,ad7091r8
    + then:
    + properties:
    + interrupts: true
    + else:
    + properties:
    + interrupts: false
    +
    +unevaluatedProperties: false
    +
    +examples:
    + - |
    + #include <dt-bindings/interrupt-controller/irq.h>
    + #include <dt-bindings/gpio/gpio.h>
    + spi {
    + #address-cells = <1>;
    + #size-cells = <0>;
    +
    + adc@0 {
    + compatible = "adi,ad7091r8";
    + reg = <0x0>;
    + spi-max-frequency = <45454545>;
    + vref-supply = <&adc_vref>;
    + adi,conversion-start-gpios = <&gpio 25 GPIO_ACTIVE_LOW>;
    + reset-gpios = <&gpio 27 GPIO_ACTIVE_LOW>;
    + interrupts = <22 IRQ_TYPE_EDGE_FALLING>;
    + interrupt-parent = <&gpio>;
    + };
    + };
    +...
    diff --git a/MAINTAINERS b/MAINTAINERS
    index 008f0e73bead..6e7c6c866396 100644
    --- a/MAINTAINERS
    +++ b/MAINTAINERS
    @@ -1132,6 +1132,7 @@ L: linux-iio@vger.kernel.org
    S: Supported
    W: http://ez.analog.com/community/linux-device-drivers
    F: Documentation/devicetree/bindings/iio/adc/adi,ad7091r5.yaml
    +F: Documentation/devicetree/bindings/iio/adc/adi,ad7091r8.yaml
    F: drivers/iio/adc/drivers/iio/adc/ad7091r-base.c
    F: drivers/iio/adc/drivers/iio/adc/ad7091r-base.h
    F: drivers/iio/adc/drivers/iio/adc/ad7091r5.c
    --
    2.42.0
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