dt-bindings: power: supply: bq24190: Convert to DT schema format
Convert the binding to DT schema format. Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com> Reviewed-by: Rob Herring <robh@kernel.org>
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Sebastian Reichel
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Sebastian Reichel
Sebastian Reichel
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TI BQ24190 Li-Ion Battery Charger
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Required properties:
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- compatible: contains one of the following:
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* "ti,bq24190"
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* "ti,bq24192"
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* "ti,bq24192i"
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* "ti,bq24196"
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- reg: integer, I2C address of the charger.
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- interrupts[-extended]: configuration for charger INT pin.
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Optional properties:
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- monitored-battery: phandle of battery characteristics devicetree node
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The charger uses the following battery properties:
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+ precharge-current-microamp: maximum charge current during precharge
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phase (typically 20% of battery capacity).
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+ charge-term-current-microamp: a charge cycle terminates when the
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battery voltage is above recharge threshold, and the current is below
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this setting (typically 10% of battery capacity).
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See also Documentation/devicetree/bindings/power/supply/battery.txt
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- ti,system-minimum-microvolt: when power is connected and the battery is below
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minimum system voltage, the system will be regulated above this setting.
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child nodes:
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- usb-otg-vbus:
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Usage: optional
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Description: Regulator that is used to control the VBUS voltage direction for
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either USB host mode or for charging on the OTG port.
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Notes:
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- Some circuit boards wire the chip's "OTG" pin high (enabling 500mA default
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charge current on USB SDP ports, among other features). To simulate this on
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boards that wire the pin to a GPIO, set a gpio-hog.
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Example:
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bat: battery {
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compatible = "simple-battery";
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precharge-current-microamp = <256000>;
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charge-term-current-microamp = <128000>;
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// etc.
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};
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bq24190: charger@6a {
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compatible = "ti,bq24190";
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reg = <0x6a>;
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interrupts-extended = <&gpiochip 10 IRQ_TYPE_EDGE_FALLING>;
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monitored-battery = <&bat>;
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ti,system-minimum-microvolt = <3200000>;
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usb_otg_vbus: usb-otg-vbus { };
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};
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&twl_gpio {
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otg {
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gpio-hog;
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gpios = <6 0>;
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output-high;
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line-name = "otg-gpio";
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};
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};
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92
Documentation/devicetree/bindings/power/supply/bq24190.yaml
Normal file
92
Documentation/devicetree/bindings/power/supply/bq24190.yaml
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@@ -0,0 +1,92 @@
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2021 Sebastian Reichel
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%YAML 1.2
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---
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$id: "http://devicetree.org/schemas/power/supply/bq24190.yaml#"
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$schema: "http://devicetree.org/meta-schemas/core.yaml#"
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title: Binding for TI BQ2419x Li-Ion Battery Charger
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maintainers:
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- Sebastian Reichel <sre@kernel.org>
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allOf:
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- $ref: power-supply.yaml#
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properties:
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compatible:
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enum:
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- ti,bq24190
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- ti,bq24192
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- ti,bq24192i
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- ti,bq24196
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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usb-otg-vbus:
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type: object
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description: |
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Regulator that is used to control the VBUS voltage direction for
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either USB host mode or for charging on the OTG port
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ti,system-minimum-microvolt:
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description: |
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when power is connected and the battery is below minimum system voltage,
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the system will be regulated above this setting.
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omit-battery-class:
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type: boolean
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description: |
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If this property is set, the operating system does not try to create a
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battery device.
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monitored-battery:
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$ref: /schemas/types.yaml#/definitions/phandle
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description: |
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phandle to a "simple-battery" compatible node.
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This property must be a phandle to a node using the format described
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in battery.yaml, with the following properties being required:
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- precharge-current-microamp: maximum charge current during precharge phase
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(typically 20% of battery capacity).
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- charge-term-current-microamp: a charge cycle terminates when the battery voltage is
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above recharge threshold, and the current is below this
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setting (typically 10% of battery capacity).
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required:
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- compatible
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- reg
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- interrupts
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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bat: battery {
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compatible = "simple-battery";
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precharge-current-microamp = <256000>;
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charge-term-current-microamp = <128000>;
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};
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i2c0 {
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#address-cells = <1>;
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#size-cells = <0>;
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charger@6a {
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compatible = "ti,bq24190";
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reg = <0x6a>;
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interrupt-parent = <&gpiochip>;
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interrupts = <10 IRQ_TYPE_EDGE_FALLING>;
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monitored-battery = <&bat>;
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ti,system-minimum-microvolt = <3200000>;
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usb_otg_vbus: usb-otg-vbus { };
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};
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};
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