| # 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: |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| 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"; |
| }; |
| ... |