Commit b70d154d authored by Jonathan Cameron's avatar Jonathan Cameron
Browse files

dt-bindings:iio:adc: convert adc.txt to yaml 



Each driver that uses this will need to use a $ref
We can't always enable it like most of the generic bindings due to
channel@X matching far more widely than IIO.

Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201031182423.742798-2-jic23@kernel.org
parent f494151b

Documentation/devicetree/bindings/iio/adc/adc.txt

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Common ADCs properties



Optional properties for child nodes:

- bipolar : Boolean, if set the channel is used in bipolar mode.

- diff-channels : Differential channels muxed for this ADC. The first value

		specifies the positive input pin, the second value the negative

		input pin.

- reg: The channel number.

- label: Unique name to identify which channel this is.



Example:

	adc@0 {

		compatible = "some,adc";

		...

		channel@0 {

			reg = <0>;

			label = "channel_0_name";

			bipolar;

			diff-channels = <0 1>;

			...

		};



		channel@1 {

			reg = <1>;

			label = "channel_1_name";

			diff-channels = <2 3>;

			...

		};

	};

Documentation/devicetree/bindings/iio/adc/adc.yaml

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# SPDX-License-Identifier: GPL-2.0

%YAML 1.2

---

$id: http://devicetree.org/schemas/iio/adc/adc.yaml#

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



title: Generic IIO bindings for ADC channels



maintainers:

  - Jonathan Cameron <jic23@kernel.org>



description:

  A few properties are defined in a common way ADC channels.



properties:

  $nodename:

    pattern: "^channel(@[0-9a-f]+)?$"

    description:

      A channel index should match reg.



  reg:

    maxItems: 1



  label:

    $ref: /schemas/types.yaml#/definitions/string

    description: Unique name to identify which channel this is.



  bipolar:

    $ref: /schemas/types.yaml#/definitions/flag

    description: If provided, the channel is to be used in bipolar mode.



  diff-channels:

    $ref: /schemas/types.yaml#/definitions/uint32-array

    maxItems: 2

    minItems: 2

    description:

      Many ADCs have dual Muxes to allow different input pins to be routed

      to both the positive and negative inputs of a differential ADC.

      The first value specifies the positive input pin, the second

      specifies the negative input pin.



additionalProperties: true