* STMicroelectronics STPMIC1 Power Management IC

Required properties:
- compatible:		: "st,stpmic1"
- reg:			: The I2C slave address for the STPMIC1 chip.
- interrupts:		: The interrupt line the device is connected to.
- #interrupt-cells:	: Should be 1.
- interrupt-controller:	: Marks the device node as an interrupt controller.
			    Interrupt numbers are defined at
			    dt-bindings/mfd/st,stpmic1.h.

STPMIC1 consists in a varied group of sub-devices.
Each sub-device binding is be described in own documentation file.

Device			 Description
------			------------
st,stpmic1-onkey	: Power on key, see ../input/st,stpmic1-onkey.txt
st,stpmic1-regulators	: Regulators, see ../regulator/st,stpmic1-regulator.txt
st,stpmic1-wdt		: Watchdog, see ../watchdog/st,stpmic1-wdt.txt

Example:

#include <dt-bindings/mfd/st,stpmic1.h>

pmic: pmic@33 {
	compatible = "st,stpmic1";
	reg = <0x33>;
	interrupt-parent = <&gpioa>;
	interrupts = <0 2>;

	interrupt-controller;
	#interrupt-cells = <2>;

	onkey {
		compatible = "st,stpmic1-onkey";
		interrupts = <IT_PONKEY_F 0>,<IT_PONKEY_R 1>;
		interrupt-names = "onkey-falling", "onkey-rising";
		power-off-time-sec = <10>;
	};

	watchdog {
		compatible = "st,stpmic1-wdt";
	};

	regulators {
		compatible = "st,stpmic1-regulators";

		vdd_core: buck1 {
			regulator-name = "vdd_core";
			regulator-boot-on;
			regulator-min-microvolt = <700000>;
			regulator-max-microvolt = <1200000>;
		};
		vdd: buck3 {
			regulator-name = "vdd";
			regulator-min-microvolt = <3300000>;
			regulator-max-microvolt = <3300000>;
			regulator-boot-on;
			regulator-pull-down;
		};
	};