dt-bindings: power: supply: Add Richtek RT9471 battery charger

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/power/supply/richtek,rt9471.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Richtek RT9471 3A Single Cell Switching Battery charger

maintainers:

  - Alina Yu <alina_yu@richtek.com>

  - ChiYuan Huang <cy_huang@richtek.com>

description: |

  RT9471 is a switch-mode single cell Li-Ion/Li-Polymer battery charger for

  portable applications. It supports USB BC1.2 port detection, current and

  voltage regulations in both charging and boost mode.

  Datasheet is available at

  https://www.richtek.com/assets/product_file/RT9471=RT9471D/DS9471D-02.pdf

properties:

  compatible:

    const: richtek,rt9471

  reg:

    maxItems: 1

  charge-enable-gpios:

    description: GPIO used to turn on and off charging.

    maxItems: 1

  wakeup-source: true

  interrupts:

    maxItems: 1

  usb-otg-vbus-regulator:

    type: object

    $ref: /schemas/regulator/regulator.yaml#

    unevaluatedProperties: false

required:

  - compatible

  - reg

  - wakeup-source

  - interrupts

additionalProperties: false

examples:

  - |

    #include <dt-bindings/interrupt-controller/irq.h>

    #include <dt-bindings/gpio/gpio.h>

    i2c {

      #address-cells = <1>;

      #size-cells = <0>;

      charger@53 {

        compatible = "richtek,rt9471";

        reg = <0x53>;

        charge-enable-gpios = <&gpio26 1 GPIO_ACTIVE_LOW>;

        wakeup-source;

        interrupts-extended = <&gpio_intc 32 IRQ_TYPE_EDGE_FALLING>;

        usb-otg-vbus-regulator {

          regulator-name = "usb-otg-vbus";

          regulator-min-microvolt = <4850000>;

          regulator-max-microvolt = <5300000>;

          regulator-min-microamp = <500000>;

          regulator-max-microamp = <1200000>;

        };

      };

    };