From: Ricardo Rivera-Matos <r-rivera-ma...@ti.com> The BQ2515X family of devices are highly integrated battery management ICs that integrate the most common functions for wearable devices namely a charger, an output voltage rail, ADC for battery and system monitoring, and a push-button controller.
Datasheets: http://www.ti.com/lit/ds/symlink/bq25150.pdf http://www.ti.com/lit/ds/symlink/bq25155.pdf Signed-off-by: Ricardo Rivera-Matos <r-rivera-ma...@ti.com> --- .../bindings/power/supply/bq2515x.yaml | 110 ++++++++++++++++++ 1 file changed, 110 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/supply/bq2515x.yaml diff --git a/Documentation/devicetree/bindings/power/supply/bq2515x.yaml b/Documentation/devicetree/bindings/power/supply/bq2515x.yaml new file mode 100644 index 000000000000..85bd6d57c5ab --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/bq2515x.yaml @@ -0,0 +1,110 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright (C) 2020 Texas Instruments Incorporated +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/power/supply/bq2515x.yaml#"; +$schema: "http://devicetree.org/meta-schemas/core.yaml#"; + +title: TI bq2515x 500-mA Linear charger family + +maintainers: + - Dan Murphy <dmur...@ti.com> + - Ricardo Rivera-Matos <r-rivera-ma...@ti.com> + +description: | + The BQ2515x family is a highly integrated battery charge management IC that + integrates the most common functions for wearable devices, namely a charger, + an output voltage rail, ADC for battery and system monitoring, and + push-button controller. + + Specifications about the charger can be found at: + http://www.ti.com/lit/ds/symlink/bq25150.pdf + http://www.ti.com/lit/ds/symlink/bq25155.pdf + +properties: + compatible: + enum: + - ti,bq25150 + - ti,bq25155 + + reg: + maxItems: 1 + description: I2C address of the charger. + + ac-detect-gpios: + description: | + GPIO used for connecting the bq2515x device PG (AC Detect) + pin. This pin should be used if possible as this is the + recommended way to obtain the charger's input PG state. + If this pin is not specified a software-based approach for PG + detection is used. + maxItems: 1 + + reset-gpios: + description: GPIO used for hardware reset. + maxItems: 1 + + low-power-gpios: + description: GPIO used for low power mode of IC. + maxItems: 1 + + charge-enable-gpios: + description: GPIO used to turn on and off charging. + maxItems: 1 + + constant-charge-current-max-microamp: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Maximum charging current in micro Amps. + minimum: 50000 + maximum: 600000 + + precharge-current-max-microamp: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Maximum precharging current in micro Amps. + minimum: 1250 + maximum: 77500 + + input-current-limit-microamp: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Maximum input current in micro Amps. + minimum: 50000 + maximum: 500000 + + constant-charge-voltage-max-microvolt: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Maximum charging voltage in micro volts. + minimum: 3600000 + maximum: 4600000 + + monitored-battery: + $ref: battery.yaml# + +required: + - compatible + - reg + +examples: + - | + bat: battery { + compatible = "simple-battery"; + constant-charge-current-max-microamp = <50000>; + precharge-current-microamp = <2500>; + constant-charge-voltage-max-microvolt = <4000000>; + }; + #include <dt-bindings/gpio/gpio.h> + i2c0 { + #address-cells = <1>; + #size-cells = <0>; + + bq25150: charger@6b { + compatible = "ti,bq25150"; + reg = <0x6b>; + monitored-battery = <&bat>; + input-current-limit-microamp = <100000>; + + ac-detect-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>; + reset-gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>; + low-power-gpios = <&gpio0 15 GPIO_ACTIVE_HIGH>; + charge-enable-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>; + }; + }; -- 2.26.2
