xref: /linux/Documentation/devicetree/bindings/power/supply/bq256xx.yaml (revision 00a37271c8a68070dc64f81a5d64644beb4cef2f) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2# Copyright (C) 2020 Texas Instruments Incorporated
3%YAML 1.2
4---
5$id: http://devicetree.org/schemas/power/supply/bq256xx.yaml#
6$schema: http://devicetree.org/meta-schemas/core.yaml#
7
8title: TI bq256xx Switch Mode Buck Charger
9
10maintainers:
11  - Andrew Davis <afd@ti.com>
12
13description: |
14  The bq256xx devices are a family of highly-integrated battery charge
15  management and system power management ICs for single cell Li-ion and Li-
16  polymer batteries.
17
18  Datasheets:
19    - https://www.ti.com/lit/ds/symlink/bq25600.pdf
20    - https://www.ti.com/lit/ds/symlink/bq25601.pdf
21    - https://www.ti.com/lit/ds/symlink/bq25600d.pdf
22    - https://www.ti.com/lit/ds/symlink/bq25601d.pdf
23    - https://www.ti.com/lit/ds/symlink/bq25611d.pdf
24    - https://www.ti.com/lit/ds/symlink/bq25618.pdf
25    - https://www.ti.com/lit/ds/symlink/bq25619.pdf
26
27properties:
28  compatible:
29    enum:
30      - ti,bq25600
31      - ti,bq25601
32      - ti,bq25600d
33      - ti,bq25601d
34      - ti,bq25611d
35      - ti,bq25618
36      - ti,bq25619
37
38  reg:
39    maxItems: 1
40
41  ti,watchdog-timeout-ms:
42    default: 0
43    description: |
44      Watchdog timer in ms. 0 (default) disables the watchdog
45    minimum: 0
46    maximum: 160000
47    enum: [ 0, 40000, 80000, 160000]
48
49  input-voltage-limit-microvolt:
50    description: |
51       Minimum input voltage limit in µV with a 100000 µV step
52    minimum: 3900000
53    maximum: 5400000
54
55  input-current-limit-microamp:
56    description: |
57       Maximum input current limit in µA with a 100000 µA step
58    minimum: 100000
59    maximum: 3200000
60
61  monitored-battery: true
62
63  interrupts:
64    maxItems: 1
65    description: |
66      Interrupt sends an active low, 256 μs pulse to host to report the charger
67      device status and faults.
68
69  ti,no-thermistor:
70    type: boolean
71    description: Indicates that no thermistor is connected to the TS pin
72
73required:
74  - compatible
75  - reg
76  - monitored-battery
77
78allOf:
79  - $ref: power-supply.yaml#
80  - if:
81      properties:
82        compatible:
83          contains:
84            enum:
85              - ti,bq25600
86              - ti,bq25601
87              - ti,bq25600d
88              - ti,bq25601d
89    then:
90      properties:
91        ti,no-thermistor: false
92
93additionalProperties: false
94
95examples:
96  - |
97    bat: battery {
98      compatible = "simple-battery";
99      constant-charge-current-max-microamp = <2040000>;
100      constant-charge-voltage-max-microvolt = <4352000>;
101      precharge-current-microamp = <180000>;
102      charge-term-current-microamp = <180000>;
103    };
104    #include <dt-bindings/gpio/gpio.h>
105    #include <dt-bindings/interrupt-controller/irq.h>
106    i2c {
107
108      clock-frequency = <400000>;
109
110      #address-cells = <1>;
111      #size-cells = <0>;
112
113      charger@6b {
114        compatible = "ti,bq25601";
115        reg = <0x6b>;
116        monitored-battery = <&bat>;
117
118        interrupt-parent = <&gpio1>;
119        interrupts = <16 IRQ_TYPE_EDGE_FALLING>;
120        ti,watchdog-timeout-ms = <40000>;
121
122        input-voltage-limit-microvolt = <4500000>;
123        input-current-limit-microamp = <2400000>;
124       };
125    };
126...
127