* ISL9238 battery charger devicetree bindings

Required properties:
- compatible : "isil,isl9238"
- reg: I2C slave address

Required nodes:
- regulators: There must a regulator subnode for the following purposes:
               Enabling voltage supply to vbus port(to enable otg mode)

Optional properties:
- isl,charge-current-limit-ma: to set the charging current limit in ma

- isl,max-system-voltage-mv: to set the maximum charging voltage or
			 system regulating voltage

- isl,max-init-voltage-mv: to set the maximum init charging voltage or
			 system default regulating voltage

- isl,min-system-voltage-mv: to set the minimum system voltage

- isl,input-voltage-limit-mv: to set input voltage limit

- isl,adapter-current-limit1-ma: to se the adapter current limit 1

- isl,adapter-current-limit2-ma: to se the adapter current limit 2

- isl,acprochot-threshold: assertion threshold for adapter overcurrent
			   condition.

- isl,dcprochot-threshold: assertion threshold for adapter overcurrent
			   condition.

- isl,trickle-chg-current-ma: to configure trickle charging current

- isl,current-sense-res: current_sense_reister(rs1, rs2) to configure
			 charging current limit
			 charging current depends on sense resister value

- isl,adapter-sense-res: adapter_sense_reister(rs1, rs2) to configure
			 adapter current limit
			 adapter current depends on sense resister value

- isl,otg-voltage-mv: to set OTG mode output regulation voltage

- isl,otg-current-ma: to set OTG mode curret

- isl,disable-regulation: disable input volatge regulation, by default
			  input voltage regulation enabled

- isl,enable-bat-learn-mode: enable battery learn mode, by default
			    battery learn mode disabled

- isl,disable-turbo-mode: disable turbo mode, by default
			  turbo charging mode enabled

- isl,enable-auto-charging: enable auto charging mode

- isl,enable-battery-ovp: enables Battery OV (Overvoltage) fault protection
			by default battery ov fault disabled

- isl,enable-trigger-acok: enables trigger PROCHOT# with ACOK
			by default acok trigger disabled

- isl,enable-prochot-otg-current: enables trigger PROCHOT# with OTGCURRENT
			by default otgcurrent trigger disabled

- isl,disable-smbus-timer: disable smbus timer(safety timer)
			by default smbus timer enabled
			smbus timer used to ensure the SMBus master
			is active and to prevent overcharging the battery.

- isl,enable-psys-monitor: enables system power monitor PSYS function
			by default PSYS function is disabled

- isl,thermal-zone: thermal zone name to get battery temperature

- isl,temp-polling-time-sec: polling time to read battey temp and apply
		thermal profile

-isl,terminate-chg-current: terminate chagring current, if battery current
		below terminate charging current then disable charging.

- isl,temp-range: temperature range for thermal profile

- isl,current-voltage-table: current and voltage table for thermal profile
< 0C - No Charge
0C to 9C - 1.17A to 13.2V
10C to 19C - 1.95A to 13.2V
20C to 49C - 3.90A to 12.75V; then 1.95A 12.75V to 13.2V
50C to 59C - 1.95A to 12.3V
> 60C - No Charge

vbus regulator properties:
================
regulator-name: vbus regulator name.

charger regulator properties:
================
regulator-name: charger regulator name.

Example
bc_isl9238: isl9238@9 {
	compatible = "isil,isl9238";
	reg = <0x09>;
	isl,charge-current-limit = <4096000>;
	isl,max-system-voltage = <8192000>;
	isl,min-system-voltage = <1024000>;
	isl,input-voltage-limit = <2730000>;
	isl,enable-auto-charging;

	isl,thermal-zone = "battery";
	isl,temp-polling-time-sec = <5>;
	isl,terminate-chg-current = <78000>;
	isl,temp-range = <0 10 20 50 60>;
	isl,current-voltage-table = <0 780 1170 3900 1950
				     0 780 1170 1950 1950
				     0 13200 13200 12550 12300>;

	vbus {
		regulator-name = "otg-vbus-reg";
	};

	charger {
		regulator-name = "charger-vbus-reg";
	};
};