xref: /freebsd/sys/contrib/device-tree/Bindings/power/supply/bq256xx.yaml (revision 2eb4d8dc723da3cf7d735a3226ae49da4c8c5dbc) 
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  - Ricardo Rivera-Matos <r-rivera-matos@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:
62    $ref: /schemas/types.yaml#/definitions/phandle
63    description: phandle to the battery node being monitored
64
65  interrupts:
66    maxItems: 1
67    description: |
68      Interrupt sends an active low, 256 μs pulse to host to report the charger
69      device status and faults.
70
71required:
72  - compatible
73  - reg
74  - monitored-battery
75
76additionalProperties: false
77
78examples:
79  - |
80    bat: battery {
81      compatible = "simple-battery";
82      constant-charge-current-max-microamp = <2040000>;
83      constant-charge-voltage-max-microvolt = <4352000>;
84      precharge-current-microamp = <180000>;
85      charge-term-current-microamp = <180000>;
86    };
87    #include <dt-bindings/gpio/gpio.h>
88    #include <dt-bindings/interrupt-controller/irq.h>
89    i2c {
90
91      clock-frequency = <400000>;
92
93      #address-cells = <1>;
94      #size-cells = <0>;
95
96      charger@6b {
97        compatible = "ti,bq25601";
98        reg = <0x6b>;
99        monitored-battery = <&bat>;
100
101        interrupt-parent = <&gpio1>;
102        interrupts = <16 IRQ_TYPE_EDGE_FALLING>;
103        ti,watchdog-timeout-ms = <40000>;
104
105        input-voltage-limit-microvolt = <4500000>;
106        input-current-limit-microamp = <2400000>;
107       };
108    };
109...
110