1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/power/suppl
5 $schema: http://devicetree.org/meta-schemas/co
6
7 title: simple battery chargers only communicat
8
9 maintainers:
10 - Sebastian Reichel <sre@kernel.org>
11
12 description:
13 This binding is for all chargers, which are
14 autonomously, only providing some status GPI
15 GPIOs for limited control over the charging
16
17 properties:
18 compatible:
19 const: gpio-charger
20
21 charger-type:
22 enum:
23 - unknown
24 - battery
25 - ups
26 - mains
27 - usb-sdp # USB standa
28 - usb-dcp # USB dedica
29 - usb-cdp # USB chargi
30 - usb-aca # USB access
31 description:
32 Type of the charger, e.g. "mains" for a
33
34 gpios:
35 maxItems: 1
36 description: GPIO indicating the charger p
37
38 charge-status-gpios:
39 maxItems: 1
40 description: GPIO indicating the charging
41
42 charge-current-limit-gpios:
43 minItems: 1
44 maxItems: 32
45 description: GPIOs used for current limiti
46
47 charge-current-limit-mapping:
48 description: List of tuples with current i
49 this order). The tuples must be provided
50 current limit.
51 $ref: /schemas/types.yaml#/definitions/uin
52 items:
53 items:
54 - description:
55 Current limit in uA
56 - description:
57 Encoded GPIO setting. Bit 0 repres
58 charge-current-limit-gpios propert
59 GPIO and so on.
60
61 required:
62 - compatible
63
64 anyOf:
65 - required:
66 - gpios
67 - required:
68 - charge-status-gpios
69 - required:
70 - charge-current-limit-gpios
71
72 dependencies:
73 charge-current-limit-gpios: [ charge-current
74 charge-current-limit-mapping: [ charge-curre
75
76 additionalProperties: false
77
78 examples:
79 - |
80 #include <dt-bindings/gpio/gpio.h>
81
82 charger {
83 compatible = "gpio-charger";
84 charger-type = "usb-sdp";
85
86 gpios = <&gpd 28 GPIO_ACTIVE_LOW>;
87 charge-status-gpios = <&gpc 27 GPIO_ACTI
88
89 charge-current-limit-gpios = <&gpioA 11
90 <&gpioA 12
91 charge-current-limit-mapping = <2500000
92 <700000 0
93 <0 0x02>;
94 };
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