[PATCH 2/3] Add the bindings for the bq25150 and bq25155 500mA charging ICs from Texas Instruments.

Dan Murphy
2020-05-15T19:41:41Z

From: Ricardo Rivera-Matos <r-rivera-matos@ti.com>

The BQ2515X family of devices are highly integrated battery management
ICs that integrate the most common functions for wearbale 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-matos@ti.com>
---
.../bindings/power/supply/bq2515x.yaml | 106 ++++++++++++++++++
1 file changed, 106 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..83487957fc8c
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/supply/bq2515x.yaml
@@ -0,0 +1,106 @@
+# 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 <dmurphy@ti.com>
+ - Ricardo Rivera-Matos <r-rivera-matos@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.
+
+ reset-gpios:
+ description: |
+ GPIO used for hardware reset.
+
+ low-power-gpios:
+ description: |
+ GPIO used for low power mode of IC.
+
+ charge-enable-gpios:
+ description: |
+ GPIO used to turn on and off charging.
+
+ constant-charge-current-max-microamp:
+ description: |
+ Maximum charging current in micro Amps.
+ minimum: 50000
+ maximum: 600000
+
+ precharge-current-max-microamp:
+ description: |
+ Maximum precharging current in micro Amps.
+ minimum: 1250
+ maximum: 77500
+
+ input-current-limit-microamp:
+ description: |
+ Maximum input current in micro Amps.
+ minimum: 50000
+ maximum: 500000
+
+ constant-charge-voltage-max-microvolt:
+ description: |
+ Maximum charging voltage in micro volts.
+ minimum: 3600000
+ maximum: 4600000
+
+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