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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/iio/health/maxim,max30100.yaml
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# SPDX-License-Identifier: (GPL-2.0 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/health/maxim,max30100.yaml#

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

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title: Maxim MAX30100 heart rate and pulse oximeter sensor

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maintainers:

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  - Matt Ranostay <matt.ranostay@konsulko.com>

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properties:

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  compatible:

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    const: maxim,max30100

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  reg:

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    maxItems: 1

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  interrupts:

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    maxItems: 1

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    description: Connected to ADC_RDY pin.

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  maxim,led-current-microamp:

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    minItems: 2

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    maxItems: 2

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    description: |

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      LED current whilst the engine is running. First indexed value is

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      the configuration for the RED LED, and second value is for the IR LED.

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  maxim,pulse-width-us:

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    description: |

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      LED pulse width in microseconds. Appropriate pulse width depends on

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      factors such as optical window absorption, LED-to-sensor distance,

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      and expected reflectivity of the skin or contact surface.

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    enum: [200, 400, 800, 1600]

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    default: 1600

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additionalProperties: false

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required:

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  - compatible

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  - reg

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  - interrupts

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examples:

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  - |

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    i2c {

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        #address-cells = <1>;

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        #size-cells = <0>;

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        heart-rate@57 {

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            compatible = "maxim,max30100";

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            reg = <0x57>;

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            maxim,led-current-microamp = <24000 50000>;

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            interrupt-parent = <&gpio1>;

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            interrupts = <16 2>;

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        };

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    };

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...

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