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 $ref: /schemas/types.yaml#/definitions/uint32
32 description: Battery sense resistor in mic 33 description: Battery sense resistor in microohm.
33 minimum: 1000 34 minimum: 1000
34 35
35 lltc,rsnsi-micro-ohms: 36 lltc,rsnsi-micro-ohms:
>> 37 $ref: /schemas/types.yaml#/definitions/uint32
36 description: Input current sense resistor 38 description: Input current sense resistor in microohm.
37 minimum: 1000 39 minimum: 1000
38 40
39 lltc,cell-count: 41 lltc,cell-count:
40 $ref: /schemas/types.yaml#/definitions/uin 42 $ref: /schemas/types.yaml#/definitions/uint32
41 description: | 43 description: |
42 Number of battery cells. If not provided 44 Number of battery cells. If not provided, will be obtained from the chip
43 once the external power is applied. Omit 45 once the external power is applied. Omit this when the number of cells
44 is somewhat dynamic. Without it, several 46 is somewhat dynamic. Without it, several measurements will return 0 until
45 the charger is connected to an external 47 the charger is connected to an external supply.
46 48
47 required: 49 required:
48 - compatible 50 - compatible
49 - reg 51 - reg
50 - lltc,rsnsb-micro-ohms 52 - lltc,rsnsb-micro-ohms
51 - lltc,rsnsi-micro-ohms 53 - lltc,rsnsi-micro-ohms
52 54
53 additionalProperties: false 55 additionalProperties: false
54 56
55 examples: 57 examples:
56 - | 58 - |
57 i2c { !! 59 i2c0 {
58 #address-cells = <1>; 60 #address-cells = <1>;
59 #size-cells = <0>; 61 #size-cells = <0>;
60 charger: battery-charger@68 { 62 charger: battery-charger@68 {
61 compatible = "lltc,ltc4162-l"; 63 compatible = "lltc,ltc4162-l";
62 reg = <0x68>; 64 reg = <0x68>;
63 lltc,rsnsb-micro-ohms = <10000>; 65 lltc,rsnsb-micro-ohms = <10000>;
64 lltc,rsnsi-micro-ohms = <16000>; 66 lltc,rsnsi-micro-ohms = <16000>;
65 lltc,cell-count = <2>; 67 lltc,cell-count = <2>;
66 }; 68 };
67 }; 69 };
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