capella,cm3605.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/iio/light/capella,cm3605.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title:
    8   Capella Microsystems CM3605 Ambient Light and Short Distance Proximity Sensor
    9 
   10 maintainers:
   11   - Linus Walleij <linus.walleij@linaro.org>
   12   - Kevin Tsai <ktsai@capellamicro.com>
   13 
   14 description: |
   15   The CM3605 is an entirely analog part. However, it requires quite a bit of
   16   software logic to interface a host operating system.
   17 
   18   This ALS and proximity sensor was one of the very first deployed in mobile
   19   handsets, notably it is used in the very first Nexus One Android phone from
   20   2010.
   21 
   22 properties:
   23   compatible:
   24     const: capella,cm3605
   25 
   26   aset-gpios:
   27     maxItems: 1
   28     description:
   29       ASET line (drive low to activate the ALS, should be flagged
   30       GPIO_ACTIVE_LOW)
   31 
   32   interrupts:
   33     maxItems: 1
   34     description:
   35       Connected to the POUT (proximity sensor out) line. The edge
   36       detection must be set to IRQ_TYPE_EDGE_BOTH so as to detect
   37       movements toward and away from the proximity sensor.
   38 
   39   io-channels:
   40     maxItems: 1
   41     description:
   42       ADC channel used for converting the voltage from AOUT to a digital
   43       representation.
   44 
   45   io-channel-names:
   46     const: aout
   47 
   48   vdd-supply: true
   49 
   50   capella,aset-resistance-ohms:
   51     enum: [50000, 100000, 300000, 600000]
   52     description: >
   53       Sensitivity calibration resistance. Note that calibration curves
   54       are only provided for specific allowed values. Default: 100 kOhms.
   55 
   56 required:
   57   - compatible
   58   - aset-gpios
   59   - interrupts
   60   - io-channels
   61   - io-channel-names
   62 
   63 additionalProperties: false
   64 
   65 examples:
   66   - |
   67     #include <dt-bindings/gpio/gpio.h>
   68     #include <dt-bindings/interrupt-controller/irq.h>
   69     light-sensor {
   70         compatible = "capella,cm3605";
   71         vdd-supply = <&foo_reg>;
   72         aset-gpios = <&foo_gpio 1 GPIO_ACTIVE_LOW>;
   73         capella,aset-resistance-ohms = <100000>;
   74         interrupts = <1 IRQ_TYPE_EDGE_BOTH>;
   75         io-channels = <&adc 0x01>;
   76         io-channel-names = "aout";
   77     };
   78 ...

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sys/contrib/device-tree/Bindings/iio/light/capella,cm3605.yaml