Kernel-3.10.0-957.el7_power_supply

Power Supply Core Support

Optional Properties:

• power-supplies : This property is added to a supply in order to list the
  devices which supply it power, referenced by their phandles.

Example:

usb-charger: power@e {
    compatible = "some,usb-charger";
    ...
};

ac-charger: power@c {
    compatible = "some,ac-charger";
    ...
};

battery@b {
    compatible = "some,battery";
    ...
    power-supplies = <&usb-charger>, <&ac-charger>;
};