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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/iio/proximity/semtech,sx9310.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Semtech's SX9310 capacitive proximity sensor
maintainers:
- Daniel Campello <campello@chromium.org>
description: |
Semtech's SX9310/SX9311 capacitive proximity/button solution.
Specifications about the devices can be found at:
https://www.semtech.com/products/smart-sensing/sar-sensors/sx9310
properties:
compatible:
enum:
- semtech,sx9310
- semtech,sx9311
reg:
maxItems: 1
interrupts:
description:
The sole interrupt generated by the device used to announce the
preceding reading request has finished and that data is
available or that a close/far proximity event has happened.
maxItems: 1
vdd-supply:
description: Main power supply
svdd-supply:
description: Host interface power supply
"#io-channel-cells":
const: 1
semtech,cs0-ground:
description: Indicates the CS0 sensor is connected to ground.
type: boolean
semtech,combined-sensors:
$ref: /schemas/types.yaml#/definitions/uint32-array
description: |
List of which sensors are combined and represented by CS3.
Possible values are -
3 - CS3 (internal)
0 1 - CS0 + CS1
1 2 - CS1 + CS2 (default)
0 1 2 3 - CS0 + CS1 + CS2 + CS3
items:
enum: [ 0, 1, 2, 3 ]
minItems: 1
maxItems: 4
semtech,resolution:
description:
Capacitance measure resolution. Refer to datasheet for more details.
enum:
- coarsest
- very-coarse
- coarse
- medium-coarse
- medium
- fine
- very-fine
- finest
semtech,startup-sensor:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1, 2, 3]
default: 0
description:
Sensor used for start-up proximity detection. The combined
sensor is represented by the value 3. This is used for initial
compensation.
semtech,proxraw-strength:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 2, 4, 8]
default: 2
description:
PROXRAW filter strength. A value of 0 represents off, and other values
represent 1-1/N.
semtech,avg-pos-strength:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 16, 64, 128, 256, 512, 1024, 4294967295]
default: 16
description:
Average positive filter strength. A value of 0 represents off and
UINT_MAX (4294967295) represents infinite. Other values
represent 1-1/N.
required:
- compatible
- reg
- "#io-channel-cells"
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
proximity@28 {
compatible = "semtech,sx9310";
reg = <0x28>;
interrupt-parent = <&pio>;
interrupts = <5 IRQ_TYPE_LEVEL_LOW 5>;
vdd-supply = <&pp3300_a>;
svdd-supply = <&pp1800_prox>;
#io-channel-cells = <1>;
semtech,cs0-ground;
semtech,combined-sensors = <1 2 3>;
semtech,resolution = "fine";
semtech,startup-sensor = <1>;
semtech,proxraw-strength = <2>;
semtech,avg-pos-strength = <64>;
};
};
|
