semtech,sx9310.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,sx9310.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Semtech's SX9310 capacitive proximity sensor
    8 
    9 maintainers:
   10   - Daniel Campello <campello@chromium.org>
   11 
   12 description: |
   13   Semtech's SX9310/SX9311 capacitive proximity/button solution.
   14 
   15   Specifications about the devices can be found at:
   16   https://www.semtech.com/products/smart-sensing/sar-sensors/sx9310
   17 
   18 properties:
   19   compatible:
   20     enum:
   21       - semtech,sx9310
   22       - semtech,sx9311
   23 
   24   reg:
   25     maxItems: 1
   26 
   27   interrupts:
   28     description:
   29       The sole interrupt generated by the device used to announce the
   30       preceding reading request has finished and that data is
   31       available or that a close/far proximity event has happened.
   32     maxItems: 1
   33 
   34   vdd-supply:
   35     description: Main power supply
   36 
   37   svdd-supply:
   38     description: Host interface power supply
   39 
   40   "#io-channel-cells":
   41     const: 1
   42 
   43   semtech,cs0-ground:
   44     description: Indicates the CS0 sensor is connected to ground.
   45     type: boolean
   46 
   47   semtech,combined-sensors:
   48     $ref: /schemas/types.yaml#/definitions/uint32-array
   49     description: |
   50       List of which sensors are combined and represented by CS3.
   51       Possible values are -
   52       3        - CS3 (internal)
   53       0 1      - CS0 + CS1
   54       1 2      - CS1 + CS2 (default)
   55       0 1 2 3  - CS0 + CS1 + CS2 + CS3
   56     items:
   57       enum: [ 0, 1, 2, 3 ]
   58     minItems: 1
   59     maxItems: 4
   60 
   61   semtech,resolution:
   62     description:
   63       Capacitance measure resolution. Refer to datasheet for more details.
   64     enum:
   65       - coarsest
   66       - very-coarse
   67       - coarse
   68       - medium-coarse
   69       - medium
   70       - fine
   71       - very-fine
   72       - finest
   73 
   74   semtech,startup-sensor:
   75     $ref: /schemas/types.yaml#/definitions/uint32
   76     enum: [0, 1, 2, 3]
   77     default: 0
   78     description:
   79       Sensor used for start-up proximity detection. The combined
   80       sensor is represented by the value 3. This is used for initial
   81       compensation.
   82 
   83   semtech,proxraw-strength:
   84     $ref: /schemas/types.yaml#/definitions/uint32
   85     enum: [0, 2, 4, 8]
   86     default: 2
   87     description:
   88       PROXRAW filter strength. A value of 0 represents off, and other values
   89       represent 1-1/N.
   90 
   91   semtech,avg-pos-strength:
   92     $ref: /schemas/types.yaml#/definitions/uint32
   93     enum: [0, 16, 64, 128, 256, 512, 1024, 4294967295]
   94     default: 16
   95     description:
   96       Average positive filter strength. A value of 0 represents off and
   97       UINT_MAX (4294967295) represents infinite. Other values
   98       represent 1-1/N.
   99 
  100 required:
  101   - compatible
  102   - reg
  103   - "#io-channel-cells"
  104 
  105 additionalProperties: false
  106 
  107 examples:
  108   - |
  109     #include <dt-bindings/interrupt-controller/irq.h>
  110     i2c {
  111       #address-cells = <1>;
  112       #size-cells = <0>;
  113       proximity@28 {
  114         compatible = "semtech,sx9310";
  115         reg = <0x28>;
  116         interrupt-parent = <&pio>;
  117         interrupts = <5 IRQ_TYPE_LEVEL_LOW 5>;
  118         vdd-supply = <&pp3300_a>;
  119         svdd-supply = <&pp1800_prox>;
  120         #io-channel-cells = <1>;
  121         semtech,cs0-ground;
  122         semtech,combined-sensors = <1 2 3>;
  123         semtech,resolution = "fine";
  124         semtech,startup-sensor = <1>;
  125         semtech,proxraw-strength = <2>;
  126         semtech,avg-pos-strength = <64>;
  127       };
  128     };

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