| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: GPL-2.0 |
| 2 | # Copyright (C) 2021 Sebastian Reichel |
| 3 | %YAML 1.2 |
| 4 | --- |
| 5 | $id: http://devicetree.org/schemas/power/supply/bq24735.yaml# |
| 6 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 7 | |
| 8 | title: TI BQ24735 Li-Ion Battery Charger |
| 9 | |
| 10 | maintainers: |
| 11 | - Sebastian Reichel <sre@kernel.org> |
| 12 | |
| 13 | allOf: |
| 14 | - $ref: power-supply.yaml# |
| 15 | |
| 16 | properties: |
| 17 | compatible: |
| 18 | const: ti,bq24735 |
| 19 | |
| 20 | reg: |
| 21 | maxItems: 1 |
| 22 | |
| 23 | interrupts: |
| 24 | description: AC adapter plug event interrupt |
| 25 | maxItems: 1 |
| 26 | |
| 27 | ti,ac-detect-gpios: |
| 28 | maxItems: 1 |
| 29 | description: | |
| 30 | This GPIO is optionally used to read the AC adapter status. This is a Host GPIO |
| 31 | that is configured as an input and connected to the ACOK pin on the bq24735. |
| 32 | Note: for backwards compatibility reasons, the GPIO must be active on AC adapter |
| 33 | absence despite ACOK being active (high) on AC adapter presence. |
| 34 | |
| 35 | ti,charge-current: |
| 36 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 37 | description: | |
| 38 | Used to control and set the charging current. |
| 39 | This value must be between 128mA and 8.128A with a 64mA step resolution. |
| 40 | The POR value is 0x0000h. This number is in mA (e.g. 8192). |
| 41 | See spec for more information about the ChargeCurrent (0x14h) register. |
| 42 | |
| 43 | ti,charge-voltage: |
| 44 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 45 | description: | |
| 46 | Used to control and set the charging voltage. |
| 47 | This value must be between 1.024V and 19.2V with a 16mV step resolution. |
| 48 | The POR value is 0x0000h. This number is in mV (e.g. 19200). |
| 49 | See spec for more information about the ChargeVoltage (0x15h) register. |
| 50 | |
| 51 | ti,input-current: |
| 52 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 53 | description: | |
| 54 | Used to control and set the charger input current. |
| 55 | This value must be between 128mA and 8.064A with a 128mA step resolution. |
| 56 | The POR value is 0x1000h. This number is in mA (e.g. 8064). |
| 57 | See the spec for more information about the InputCurrent (0x3fh) register. |
| 58 | |
| 59 | ti,external-control: |
| 60 | type: boolean |
| 61 | description: | |
| 62 | Indicates that the charger is configured externally and that the host should not |
| 63 | attempt to enable/disable charging or set the charge voltage/current. |
| 64 | |
| 65 | poll-interval: |
| 66 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 67 | description: | |
| 68 | If 'interrupts' is not specified, poll AC adapter presence with this interval (milliseconds). |
| 69 | |
| 70 | required: |
| 71 | - compatible |
| 72 | - reg |
| 73 | |
| 74 | additionalProperties: false |
| 75 | |
| 76 | examples: |
| 77 | - | |
| 78 | #include <dt-bindings/gpio/gpio.h> |
| 79 | |
| 80 | i2c { |
| 81 | #address-cells = <1>; |
| 82 | #size-cells = <0>; |
| 83 | |
| 84 | charger@9 { |
| 85 | compatible = "ti,bq24735"; |
| 86 | reg = <0x9>; |
| 87 | ti,ac-detect-gpios = <&gpio 72 0x1>; |
| 88 | }; |
| 89 | }; |