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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/iio/light/capella,cm3605.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title:
Capella Microsystems CM3605 Ambient Light and Short Distance Proximity Sensor
maintainers:
- Linus Walleij <linus.walleij@linaro.org>
- Kevin Tsai <ktsai@capellamicro.com>
description: |
The CM3605 is an entirely analog part. However, it requires quite a bit of
software logic to interface a host operating system.
This ALS and proximity sensor was one of the very first deployed in mobile
handsets, notably it is used in the very first Nexus One Android phone from
2010.
properties:
compatible:
const: capella,cm3605
aset-gpios:
maxItems: 1
description:
ASET line (drive low to activate the ALS, should be flagged
GPIO_ACTIVE_LOW)
interrupts:
maxItems: 1
description:
Connected to the POUT (proximity sensor out) line. The edge
detection must be set to IRQ_TYPE_EDGE_BOTH so as to detect
movements toward and away from the proximity sensor.
io-channels:
maxItems: 1
description:
ADC channel used for converting the voltage from AOUT to a digital
representation.
io-channel-names:
const: aout
vdd-supply: true
capella,aset-resistance-ohms:
enum: [50000, 100000, 300000, 600000]
description: >
Sensitivity calibration resistance. Note that calibration curves
are only provided for specific allowed values. Default: 100 kOhms.
required:
- compatible
- aset-gpios
- interrupts
- io-channels
- io-channel-names
additionalProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
light-sensor {
compatible = "capella,cm3605";
vdd-supply = <&foo_reg>;
aset-gpios = <&foo_gpio 1 GPIO_ACTIVE_LOW>;
capella,aset-resistance-ohms = <100000>;
interrupts = <1 IRQ_TYPE_EDGE_BOTH>;
io-channels = <&adc 0x01>;
io-channel-names = "aout";
};
...
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