| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame^] | 1 | # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| 2 | # Copyright (C) 2020 Texas Instruments Incorporated |
| 3 | %YAML 1.2 |
| 4 | --- |
| 5 | $id: http://devicetree.org/schemas/power/supply/bq2515x.yaml# |
| 6 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 7 | |
| 8 | title: TI bq2515x 500-mA Linear charger family |
| 9 | |
| 10 | maintainers: |
| 11 | - Andrew Davis <afd@ti.com> |
| 12 | |
| 13 | description: | |
| 14 | The BQ2515x family is a highly integrated battery charge management IC that |
| 15 | integrates the most common functions for wearable devices, namely a charger, |
| 16 | an output voltage rail, ADC for battery and system monitoring, and |
| 17 | push-button controller. |
| 18 | |
| 19 | Specifications about the charger can be found at: |
| 20 | http://www.ti.com/lit/ds/symlink/bq25150.pdf |
| 21 | http://www.ti.com/lit/ds/symlink/bq25155.pdf |
| 22 | |
| 23 | properties: |
| 24 | compatible: |
| 25 | enum: |
| 26 | - ti,bq25150 |
| 27 | - ti,bq25155 |
| 28 | |
| 29 | reg: |
| 30 | maxItems: 1 |
| 31 | description: I2C address of the charger. |
| 32 | |
| 33 | ac-detect-gpios: |
| 34 | description: | |
| 35 | GPIO used for connecting the bq2515x device PG (AC Detect) |
| 36 | pin. |
| 37 | maxItems: 1 |
| 38 | |
| 39 | reset-gpios: |
| 40 | description: GPIO used for hardware reset. |
| 41 | maxItems: 1 |
| 42 | |
| 43 | powerdown-gpios: |
| 44 | description: GPIO used for low power mode of IC. |
| 45 | maxItems: 1 |
| 46 | |
| 47 | charge-enable-gpios: |
| 48 | description: GPIO used to turn on and off charging. |
| 49 | maxItems: 1 |
| 50 | |
| 51 | input-current-limit-microamp: |
| 52 | description: Maximum input current in micro Amps. |
| 53 | minimum: 50000 |
| 54 | maximum: 500000 |
| 55 | |
| 56 | monitored-battery: |
| 57 | $ref: /schemas/types.yaml#/definitions/phandle |
| 58 | description: phandle to the battery node being monitored |
| 59 | |
| 60 | required: |
| 61 | - compatible |
| 62 | - reg |
| 63 | - monitored-battery |
| 64 | |
| 65 | additionalProperties: false |
| 66 | |
| 67 | examples: |
| 68 | - | |
| 69 | bat: battery { |
| 70 | compatible = "simple-battery"; |
| 71 | constant-charge-current-max-microamp = <50000>; |
| 72 | precharge-current-microamp = <2500>; |
| 73 | constant-charge-voltage-max-microvolt = <4000000>; |
| 74 | }; |
| 75 | #include <dt-bindings/gpio/gpio.h> |
| 76 | i2c { |
| 77 | #address-cells = <1>; |
| 78 | #size-cells = <0>; |
| 79 | |
| 80 | bq25150: charger@6b { |
| 81 | compatible = "ti,bq25150"; |
| 82 | reg = <0x6b>; |
| 83 | monitored-battery = <&bat>; |
| 84 | input-current-limit-microamp = <100000>; |
| 85 | |
| 86 | ac-detect-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>; |
| 87 | reset-gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>; |
| 88 | powerdown-gpios = <&gpio0 15 GPIO_ACTIVE_HIGH>; |
| 89 | charge-enable-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>; |
| 90 | }; |
| 91 | }; |