xref: /freebsd/sys/contrib/device-tree/Bindings/power/supply/bq24190.yaml (revision b97ee269eae3cbaf35c18f51a459aea581c2a7dc)

# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2021 Sebastian Reichel
%YAML 1.2
---
$id: http://devicetree.org/schemas/power/supply/bq24190.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Binding for TI BQ2419x Li-Ion Battery Charger

maintainers:
  - Sebastian Reichel <sre@kernel.org>

allOf:
  - $ref: power-supply.yaml#

properties:
  compatible:
    enum:
      - ti,bq24190
      - ti,bq24192
      - ti,bq24192i
      - ti,bq24196

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  usb-otg-vbus:
    $ref: /schemas/regulator/regulator.yaml#
    description: |
      Regulator that is used to control the VBUS voltage direction for
      either USB host mode or for charging on the OTG port

  ti,system-minimum-microvolt:
    description: |
      when power is connected and the battery is below minimum system voltage,
      the system will be regulated above this setting.

  omit-battery-class:
    type: boolean
    description: |
      If this property is set, the operating system does not try to create a
      battery device.

  monitored-battery:
    $ref: /schemas/types.yaml#/definitions/phandle
    description: |
      phandle to a "simple-battery" compatible node.

      This property must be a phandle to a node using the format described
      in battery.yaml, with the following properties being required:
      - precharge-current-microamp: maximum charge current during precharge phase
                                    (typically 20% of battery capacity).
      - charge-term-current-microamp: a charge cycle terminates when the battery voltage is
                                      above recharge threshold, and the current is below this
                                      setting (typically 10% of battery capacity).

required:
  - compatible
  - reg
  - interrupts

additionalProperties: false

examples:
  - |
    #include <dt-bindings/gpio/gpio.h>
    #include <dt-bindings/interrupt-controller/irq.h>

    bat: battery {
      compatible = "simple-battery";
      precharge-current-microamp = <256000>;
      charge-term-current-microamp = <128000>;
    };

    i2c0 {
      #address-cells = <1>;
      #size-cells = <0>;

      charger@6a {
        compatible = "ti,bq24190";
        reg = <0x6a>;
        interrupt-parent = <&gpiochip>;
        interrupts = <10 IRQ_TYPE_EDGE_FALLING>;
        monitored-battery = <&bat>;
        ti,system-minimum-microvolt = <3200000>;

        usb_otg_vbus: usb-otg-vbus { };
      };
    };