| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame^] | 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 | |
| 8 | title: TI bq256xx Switch Mode Buck Charger |
| 9 | |
| 10 | maintainers: |
| 11 | - Andrew Davis <afd@ti.com> |
| 12 | |
| 13 | description: | |
| 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 | |
| 27 | properties: |
| 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 | |
| 71 | ti,no-thermistor: |
| 72 | type: boolean |
| 73 | description: Indicates that no thermistor is connected to the TS pin |
| 74 | |
| 75 | required: |
| 76 | - compatible |
| 77 | - reg |
| 78 | - monitored-battery |
| 79 | |
| 80 | allOf: |
| 81 | - if: |
| 82 | properties: |
| 83 | compatible: |
| 84 | contains: |
| 85 | enum: |
| 86 | - ti,bq25600 |
| 87 | - ti,bq25601 |
| 88 | - ti,bq25600d |
| 89 | - ti,bq25601d |
| 90 | then: |
| 91 | properties: |
| 92 | ti,no-thermistor: false |
| 93 | |
| 94 | additionalProperties: false |
| 95 | |
| 96 | examples: |
| 97 | - | |
| 98 | bat: battery { |
| 99 | compatible = "simple-battery"; |
| 100 | constant-charge-current-max-microamp = <2040000>; |
| 101 | constant-charge-voltage-max-microvolt = <4352000>; |
| 102 | precharge-current-microamp = <180000>; |
| 103 | charge-term-current-microamp = <180000>; |
| 104 | }; |
| 105 | #include <dt-bindings/gpio/gpio.h> |
| 106 | #include <dt-bindings/interrupt-controller/irq.h> |
| 107 | i2c { |
| 108 | |
| 109 | clock-frequency = <400000>; |
| 110 | |
| 111 | #address-cells = <1>; |
| 112 | #size-cells = <0>; |
| 113 | |
| 114 | charger@6b { |
| 115 | compatible = "ti,bq25601"; |
| 116 | reg = <0x6b>; |
| 117 | monitored-battery = <&bat>; |
| 118 | |
| 119 | interrupt-parent = <&gpio1>; |
| 120 | interrupts = <16 IRQ_TYPE_EDGE_FALLING>; |
| 121 | ti,watchdog-timeout-ms = <40000>; |
| 122 | |
| 123 | input-voltage-limit-microvolt = <4500000>; |
| 124 | input-current-limit-microamp = <2400000>; |
| 125 | }; |
| 126 | }; |
| 127 | ... |