1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/power/supply/lego,ev3-battery.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: LEGO MINDSTORMS EV3 Battery
8
9 maintainers:
10 - David Lechner <david@lechnology.com>
11 - Sebastian Reichel <sre@kernel.org>
12
13 description: |
14 LEGO MINDSTORMS EV3 has some built-in capability for monitoring the battery.
15 It uses 6 AA batteries or a special Li-ion rechargeable battery pack that is
16 detected by a key switch in the battery compartment.
17
18 allOf:
19 - $ref: power-supply.yaml#
20
21 properties:
22 compatible:
23 const: lego,ev3-battery
24
25 io-channels:
26 items:
27 - description: ADC channel for battery voltage
28 - description: ADC channel for battery current
29
30 io-channel-names:
31 items:
32 - const: voltage
33 - const: current
34
35 rechargeable-gpios:
36 maxItems: 1
37 description: Rechargeable battery indication gpio
38
39 required:
40 - compatible
41 - io-channels
42 - io-channel-names
43 - rechargeable-gpios
44
45 additionalProperties: false
46
47 examples:
48 - |
49 #include <dt-bindings/gpio/gpio.h>
50 battery {
51 compatible = "lego,ev3-battery";
52 io-channels = <&adc 4>, <&adc 3>;
53 io-channel-names = "voltage", "current";
54 rechargeable-gpios = <&gpio 136 GPIO_ACTIVE_LOW>;
55 };
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