xref: /freebsd/sys/contrib/device-tree/Bindings/power/supply/cw2015_battery.yaml (revision b077aed33b7b6aefca7b17ddb250cf521f938613) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/power/supply/cw2015_battery.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Battery driver for CW2015 shuntless fuel gauge by CellWise.
8
9maintainers:
10  - Tobias Schramm <t.schramm@manjaro.org>
11
12description: |
13  The driver can utilize information from a simple-battery linked via a
14  phandle in monitored-battery. If specified the driver uses the
15  charge-full-design-microamp-hours property of the battery.
16
17allOf:
18  - $ref: power-supply.yaml#
19
20properties:
21  compatible:
22    const: cellwise,cw2015
23
24  reg:
25    maxItems: 1
26
27  cellwise,battery-profile:
28    description: |
29      This property specifies characteristics of the battery used. The format
30      of this binary blob is kept secret by CellWise. The only way to obtain
31      it is to mail two batteries to a test facility of CellWise and receive
32      back a test report with the binary blob.
33    $ref: /schemas/types.yaml#/definitions/uint8-array
34    minItems: 64
35    maxItems: 64
36
37  cellwise,monitor-interval-ms:
38    description:
39      Specifies the interval in milliseconds gauge values are polled at
40    minimum: 250
41
42  power-supplies:
43    minItems: 1
44    maxItems: 8 # Should be enough
45
46  monitored-battery:
47    description:
48      Specifies the phandle of a simple-battery connected to this gauge
49    $ref: /schemas/types.yaml#/definitions/phandle
50
51required:
52  - compatible
53  - reg
54
55additionalProperties: false
56
57examples:
58  - |
59    i2c {
60        #address-cells = <1>;
61        #size-cells = <0>;
62
63        cw2015@62 {
64            compatible = "cellwise,cw2015";
65            reg = <0x62>;
66            cellwise,battery-profile = /bits/ 8 <
67                0x17 0x67 0x80 0x73 0x6E 0x6C 0x6B 0x63
68                0x77 0x51 0x5C 0x58 0x50 0x4C 0x48 0x36
69                0x15 0x0C 0x0C 0x19 0x5B 0x7D 0x6F 0x69
70                0x69 0x5B 0x0C 0x29 0x20 0x40 0x52 0x59
71                0x57 0x56 0x54 0x4F 0x3B 0x1F 0x7F 0x17
72                0x06 0x1A 0x30 0x5A 0x85 0x93 0x96 0x2D
73                0x48 0x77 0x9C 0xB3 0x80 0x52 0x94 0xCB
74                0x2F 0x00 0x64 0xA5 0xB5 0x11 0xF0 0x11
75           >;
76           cellwise,monitor-interval-ms = <5000>;
77           monitored-battery = <&bat>;
78           power-supplies = <&mains_charger>, <&usb_charger>;
79       };
80    };
81