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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/iio/proximity/semtech,sx9360.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/proximity/semtech,sx9360.yaml#

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

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title: Semtech's SX9360 capacitive proximity sensor

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maintainers:

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  - Gwendal Grignou <gwendal@chromium.org>

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  - Daniel Campello <campello@chromium.org>

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description: |

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  Semtech's SX9360 proximity sensor.

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properties:

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  compatible:

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    const: semtech,sx9360

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  reg:

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    maxItems: 1

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  interrupts:

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    description:

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      Generated by device to announce preceding read request has finished

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      and data is available or that a close/far proximity event has happened.

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    maxItems: 1

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  vdd-supply:

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    description: Main power supply

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  svdd-supply:

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    description: Host interface power supply

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  "#io-channel-cells":

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    const: 1

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  semtech,resolution:

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

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    enum: [8, 16, 32, 64, 128, 256, 512, 1024]

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    description:

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      Capacitance measurement resolution. For both phases, "reference" and

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      "measurement". Higher the number, higher the resolution.

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    default: 128

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  semtech,proxraw-strength:

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

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    minimum: 0

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    maximum: 7

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    default: 1

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    description:

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      PROXRAW filter strength for both phases. A value of 0 represents off,

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      and other values represent 1-1/2^N.

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  semtech,avg-pos-strength:

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

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    enum: [0, 16, 64, 128, 256, 512, 1024, 4294967295]

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    default: 16

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    description: |

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      Average positive filter strength. A value of 0 represents off and

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      UINT_MAX (4294967295) represents infinite. Other values

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      represent 1-1/N.

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  semtech,input-precharge-resistor-ohms:

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    default: 0

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    multipleOf: 2000

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    minimum: 0

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    maximum: 30000

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    description:

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      Pre-charge input resistance in Ohm.

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required:

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  - compatible

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  - reg

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  - "#io-channel-cells"

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additionalProperties: false

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examples:

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  - |

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    #include <dt-bindings/interrupt-controller/irq.h>

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    i2c {

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      #address-cells = <1>;

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      #size-cells = <0>;

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      proximity@28 {

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        compatible = "semtech,sx9360";

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        reg = <0x28>;

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        interrupt-parent = <&pio>;

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        interrupts = <5 IRQ_TYPE_LEVEL_LOW 5>;

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        vdd-supply = <&pp3300_a>;

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        svdd-supply = <&pp1800_prox>;

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        #io-channel-cells = <1>;

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        semtech,resolution = <256>;

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        semtech,proxraw-strength = <2>;

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        semtech,avg-pos-strength = <64>;

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        semtech,input-precharge-resistor-ohms = <4000>;

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      };

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    };

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