semtech,sx9360.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/iio/proximity/semtech,sx9360.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Semtech's SX9360 capacitive proximity sensor
    8 
    9 maintainers:
   10   - Gwendal Grignou <gwendal@chromium.org>
   11   - Daniel Campello <campello@chromium.org>
   12 
   13 description: |
   14   Semtech's SX9360 proximity sensor.
   15 
   16 properties:
   17   compatible:
   18     const: semtech,sx9360
   19 
   20   reg:
   21     maxItems: 1
   22 
   23   interrupts:
   24     description:
   25       Generated by device to announce preceding read request has finished
   26       and data is available or that a close/far proximity event has happened.
   27     maxItems: 1
   28 
   29   vdd-supply:
   30     description: Main power supply
   31 
   32   svdd-supply:
   33     description: Host interface power supply
   34 
   35   "#io-channel-cells":
   36     const: 1
   37 
   38   semtech,resolution:
   39     $ref: /schemas/types.yaml#/definitions/uint32-array
   40     enum: [8, 16, 32, 64, 128, 256, 512, 1024]
   41     description:
   42       Capacitance measurement resolution. For both phases, "reference" and
   43       "measurement". Higher the number, higher the resolution.
   44     default: 128
   45 
   46   semtech,proxraw-strength:
   47     $ref: /schemas/types.yaml#/definitions/uint32
   48     minimum: 0
   49     maximum: 7
   50     default: 1
   51     description:
   52       PROXRAW filter strength for both phases. A value of 0 represents off,
   53       and other values represent 1-1/2^N.
   54 
   55   semtech,avg-pos-strength:
   56     $ref: /schemas/types.yaml#/definitions/uint32
   57     enum: [0, 16, 64, 128, 256, 512, 1024, 4294967295]
   58     default: 16
   59     description: |
   60       Average positive filter strength. A value of 0 represents off and
   61       UINT_MAX (4294967295) represents infinite. Other values
   62       represent 1-1/N.
   63 
   64   semtech,input-precharge-resistor-ohms:
   65     default: 0
   66     multipleOf: 2000
   67     minimum: 0
   68     maximum: 30000
   69     description:
   70       Pre-charge input resistance in Ohm.
   71 
   72 required:
   73   - compatible
   74   - reg
   75   - "#io-channel-cells"
   76 
   77 additionalProperties: false
   78 
   79 examples:
   80   - |
   81     #include <dt-bindings/interrupt-controller/irq.h>
   82     i2c {
   83       #address-cells = <1>;
   84       #size-cells = <0>;
   85       proximity@28 {
   86         compatible = "semtech,sx9360";
   87         reg = <0x28>;
   88         interrupt-parent = <&pio>;
   89         interrupts = <5 IRQ_TYPE_LEVEL_LOW 5>;
   90         vdd-supply = <&pp3300_a>;
   91         svdd-supply = <&pp1800_prox>;
   92         #io-channel-cells = <1>;
   93         semtech,resolution = <256>;
   94         semtech,proxraw-strength = <2>;
   95         semtech,avg-pos-strength = <64>;
   96         semtech,input-precharge-resistor-ohms = <4000>;
   97       };
   98     };

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