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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