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