129 lines
3.3 KiB
YAML
129 lines
3.3 KiB
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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$id: http://devicetree.org/schemas/iio/proximity/semtech,sx9310.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Semtech's SX9310 capacitive proximity sensor
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maintainers:
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- Daniel Campello <campello@chromium.org>
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description: |
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Semtech's SX9310/SX9311 capacitive proximity/button solution.
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Specifications about the devices can be found at:
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https://www.semtech.com/products/smart-sensing/sar-sensors/sx9310
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properties:
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compatible:
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enum:
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- semtech,sx9310
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- semtech,sx9311
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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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The sole interrupt generated by the device used to announce the
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preceding reading request has finished and that data is
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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,cs0-ground:
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description: Indicates the CS0 sensor is connected to ground.
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type: boolean
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semtech,combined-sensors:
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$ref: /schemas/types.yaml#/definitions/uint32-array
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description: |
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List of which sensors are combined and represented by CS3.
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Possible values are -
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3 - CS3 (internal)
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0 1 - CS0 + CS1
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1 2 - CS1 + CS2 (default)
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0 1 2 3 - CS0 + CS1 + CS2 + CS3
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items:
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enum: [ 0, 1, 2, 3 ]
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minItems: 1
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maxItems: 4
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semtech,resolution:
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description:
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Capacitance measure resolution. Refer to datasheet for more details.
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enum:
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- coarsest
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- very-coarse
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- coarse
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- medium-coarse
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- medium
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- fine
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- very-fine
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- finest
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semtech,startup-sensor:
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [0, 1, 2, 3]
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default: 0
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description:
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Sensor used for start-up proximity detection. The combined
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sensor is represented by the value 3. This is used for initial
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compensation.
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semtech,proxraw-strength:
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [0, 2, 4, 8]
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default: 2
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description:
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PROXRAW filter strength. A value of 0 represents off, and other values
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represent 1-1/N.
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semtech,avg-pos-strength:
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$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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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,sx9310";
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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,cs0-ground;
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semtech,combined-sensors = <1 2 3>;
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semtech,resolution = "fine";
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semtech,startup-sensor = <1>;
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semtech,proxraw-strength = <2>;
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semtech,avg-pos-strength = <64>;
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};
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};
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