1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-C 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 # Copyright (C) 2020 Topic Embedded Products 2 # Copyright (C) 2020 Topic Embedded Products
3 %YAML 1.2 3 %YAML 1.2
4 --- 4 ---
5 $id: http://devicetree.org/schemas/power/suppl 5 $id: http://devicetree.org/schemas/power/supply/ltc4162-l.yaml#
6 $schema: http://devicetree.org/meta-schemas/co 6 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 7
8 title: Linear Technology (Analog Devices) LTC4 8 title: Linear Technology (Analog Devices) LTC4162-L Charger
9 9
10 maintainers: 10 maintainers:
11 - Mike Looijmans <mike.looijmans@topic.nl> 11 - Mike Looijmans <mike.looijmans@topic.nl>
12 12
13 description: | 13 description: |
14 The LTC ® 4162-L is an advanced monolithic 14 The LTC ® 4162-L is an advanced monolithic synchronous step-down switching
15 battery charger and PowerPath (TM) manager t 15 battery charger and PowerPath (TM) manager that seamlessly manages power
16 distribution between input sources such as w 16 distribution between input sources such as wall adapters, backplanes, solar
17 panels, etc., and a rechargeable Lithium-Ion 17 panels, etc., and a rechargeable Lithium-Ion/Polymer battery.
18 18
19 Specifications about the charger can be foun 19 Specifications about the charger can be found at:
20 https://www.analog.com/en/products/ltc4162 20 https://www.analog.com/en/products/ltc4162-s.html
21 21
22 properties: 22 properties:
23 compatible: 23 compatible:
24 enum: 24 enum:
25 - lltc,ltc4162-l 25 - lltc,ltc4162-l
26 26
27 reg: 27 reg:
28 maxItems: 1 28 maxItems: 1
29 description: I2C address of the charger. 29 description: I2C address of the charger.
30 30
31 lltc,rsnsb-micro-ohms: 31 lltc,rsnsb-micro-ohms:
32 description: Battery sense resistor in mic 32 description: Battery sense resistor in microohm.
33 minimum: 1000 33 minimum: 1000
34 34
35 lltc,rsnsi-micro-ohms: 35 lltc,rsnsi-micro-ohms:
36 description: Input current sense resistor 36 description: Input current sense resistor in microohm.
37 minimum: 1000 37 minimum: 1000
38 38
39 lltc,cell-count: 39 lltc,cell-count:
40 $ref: /schemas/types.yaml#/definitions/uin 40 $ref: /schemas/types.yaml#/definitions/uint32
41 description: | 41 description: |
42 Number of battery cells. If not provided 42 Number of battery cells. If not provided, will be obtained from the chip
43 once the external power is applied. Omit 43 once the external power is applied. Omit this when the number of cells
44 is somewhat dynamic. Without it, several 44 is somewhat dynamic. Without it, several measurements will return 0 until
45 the charger is connected to an external 45 the charger is connected to an external supply.
46 46
47 required: 47 required:
48 - compatible 48 - compatible
49 - reg 49 - reg
50 - lltc,rsnsb-micro-ohms 50 - lltc,rsnsb-micro-ohms
51 - lltc,rsnsi-micro-ohms 51 - lltc,rsnsi-micro-ohms
52 52
53 additionalProperties: false 53 additionalProperties: false
54 54
55 examples: 55 examples:
56 - | 56 - |
57 i2c { 57 i2c {
58 #address-cells = <1>; 58 #address-cells = <1>;
59 #size-cells = <0>; 59 #size-cells = <0>;
60 charger: battery-charger@68 { 60 charger: battery-charger@68 {
61 compatible = "lltc,ltc4162-l"; 61 compatible = "lltc,ltc4162-l";
62 reg = <0x68>; 62 reg = <0x68>;
63 lltc,rsnsb-micro-ohms = <10000>; 63 lltc,rsnsb-micro-ohms = <10000>;
64 lltc,rsnsi-micro-ohms = <16000>; 64 lltc,rsnsi-micro-ohms = <16000>;
65 lltc,cell-count = <2>; 65 lltc,cell-count = <2>;
66 }; 66 };
67 }; 67 };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.