dt-bindings: power: supply: gpio-charger: convert to yaml

gpio-charger

Required properties :

 - compatible : "gpio-charger"

 - gpios : GPIO indicating the charger presence.

   See GPIO binding in bindings/gpio/gpio.txt .

 - charger-type : power supply type, one of

     unknown

     battery

     ups

     mains

     usb-sdp (USB standard downstream port)

     usb-dcp (USB dedicated charging port)

     usb-cdp (USB charging downstream port)

     usb-aca (USB accessory charger adapter)

Optional properties:

 - charge-status-gpios: GPIO indicating whether a battery is charging.

Example:

	usb_charger: charger {

		compatible = "gpio-charger";

		charger-type = "usb-sdp";

		gpios = <&gpd 28 GPIO_ACTIVE_LOW>;

		charge-status-gpios = <&gpc 27 GPIO_ACTIVE_LOW>;

	};

	battery {

		power-supplies = <&usb_charger>;

	};

# SPDX-License-Identifier: GPL-2.0

%YAML 1.2

---

$id: http://devicetree.org/schemas/power/supply/gpio-charger.yaml#

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

title: simple battery chargers only communicating through GPIOs

maintainers:

  - Sebastian Reichel <sre@kernel.org>

description:

  This binding is for all chargers, which are working more or less

  autonomously, only providing some status GPIOs and possibly some

  GPIOs for limited control over the charging process.

properties:

  compatible:

    const: gpio-charger

  charger-type:

    enum:

      - unknown

      - battery

      - ups

      - mains

      - usb-sdp                   # USB standard downstream port

      - usb-dcp                   # USB dedicated charging port

      - usb-cdp                   # USB charging downstream port

      - usb-aca                   # USB accessory charger adapter

    description:

      Type of the charger, e.g. "mains" for a wall charger.

  gpios:

    maxItems: 1

    description: GPIO indicating the charger presence

  charge-status-gpios:

    maxItems: 1

    description: GPIO indicating the charging status

required:

  - compatible

  - gpios

additionalProperties: false

examples:

  - |

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

    charger {

      compatible = "gpio-charger";

      charger-type = "usb-sdp";

      gpios = <&gpd 28 GPIO_ACTIVE_LOW>;

      charge-status-gpios = <&gpc 27 GPIO_ACTIVE_LOW>;

    };