Texas Instruments TWL6040 family

The TWL6040s are 8-channel high quality low-power audio codecs providing audio
and vibra functionality on OMAP4+ platforms.
They are connected ot the host processor via i2c for commands, McPDM for audio
data and commands.

Required properties:
- compatible : Must be "ti,twl6040";
- reg: must be 0x4b for i2c address
- interrupts: twl6040 has one interrupt line connecteded to the main SoC
- interrupt-parent: The parent interrupt controller
- twl6040,audpwron-gpio: Power on GPIO line for the twl6040

- vio-supply: Regulator for the twl6040 VIO supply
- v2v1-supply: Regulator for the twl6040 V2V1 supply

Optional properties, nodes:
- enable-active-high: To power on the twl6040 during boot.

Vibra functionality
Required properties:
- vddvibl-supply: Regulator for the left vibra motor
- vddvibr-supply: Regulator for the right vibra motor
- vibra { }: Configuration section for vibra parameters containing the following
	     properties:
- ti,vibldrv-res: Resistance parameter for left driver
- ti,vibrdrv-res: Resistance parameter for right driver
- ti,viblmotor-res: Resistance parameter for left motor
- ti,viblmotor-res: Resistance parameter for right motor

Optional properties within vibra { } section:
- vddvibl_uV: If the vddvibl default voltage need to be changed
- vddvibr_uV: If the vddvibr default voltage need to be changed

Example:
&i2c1 {
	twl6040: twl@4b {
		compatible = "ti,twl6040";
		reg = <0x4b>;

		interrupts = <0 119 4>;
		interrupt-parent = <&gic>;
		twl6040,audpwron-gpio = <&gpio4 31 0>;

		vio-supply = <&v1v8>;
		v2v1-supply = <&v2v1>;
		enable-active-high;

		/* regulators for vibra motor */
		vddvibl-supply = <&vbat>;
		vddvibr-supply = <&vbat>;

		vibra {
			/* Vibra driver, motor resistance parameters */
			ti,vibldrv-res = <8>;
			ti,vibrdrv-res = <3>;
			ti,viblmotor-res = <10>;
			ti,vibrmotor-res = <10>;
		};
	};
};
