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79 lines
2.1 KiB
79 lines
2.1 KiB
# 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 <[email protected]> |
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- Kevin Tsai <[email protected]> |
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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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$ref: /schemas/types.yaml#/definitions/uint32 |
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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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