power: smb358-charger: Add snapshot of smb358 charger driver

Summit smb358 battery charger

SMB358 is a single-cell battery charger. It can charge

the battery and power the system via the USB/AC adapter input.

The smb358 interface is via I2C bus.

Required Properties:

- compatible			Must be "qcom,smb358-charger".

- reg				The device 7-bit I2C address.

- interrupt-parent		parent of interrupt.

- interrupts			This indicates the IRQ number of the GPIO

				connected to the STAT pin.

- qcom,irq-gpio			GPIO which receives interrupts from STAT output.

- qcom,bms-psy-name		This is a string and it points to the bms

				power supply name.

- qcom,float-voltage-mv		Float Voltage in mV - the maximum voltage up to which

				the battery is charged. Supported range 3500mV to 4500mV

- qcom,chg-vadc			Corresponding VADC device's phandle.

Optional Properties:

- qcom,fastchg-current-max-ma	Fast Charging current in mA. Supported range is

				from 200mA to 2000mA.

- qcom,chg-valid-gpio		GPIO which indicates the charger presence.

				This GPIO is connected to the SYSOK pin.

- qcom,chg-autonomous-mode	This is a bool property and it indicates that the

				charger is configured for autonomous operation and

				does not require any software configuration.

- qcom,disable-apsd		This is a bool property which disables automatic

				power source detection (APSD). If this is set

				charger detection is done by DCIN UV irq.

- qcom,charger-disabled		This is a bool property which disables charging.

- qcom,using-pmic-therm		This property indicates thermal pin connected to pmic or smb.

- qcom,vcc-i2c-supply           Power source required to power up i2c bus.

- qcom,bms-controlled-charging	This property indicates integrating with VMBMS, charger

				driver and BMS communicates with each other via power_supply

				framework. Property "qcom,iterm-disabled" also needs defined

				if using this feature to make sure that the charger doesn't

				terminate charging on its own.

- qcom,iterm-ma			Specifies the termination current to indicate end-of-charge.

				Possible values in mA - 30, 40, 60, 80, 100, 125, 150, 200.

- qcom,iterm-disabled		Disables the termination current feature. This is a bool

				property.

- qcom,recharge-mv		Recharge threshold in mV - the offset from the float-volatge

				as which the charger restarts charging. Possible

				values are 50mV to 300mV.

- qcom,recharge-disabled	Boolean value which disables the auto-recharge.

- qcom,chg-inhibit-disabled	This is a bool property which disables charger inhibit.

				Charger inhibit option prevents battery charging upon insertion

				of the charger when battery voltage is above the programmed inhibit

				threshold.

- qcom,chg-adc_tm		phandle to the corresponding VADC device to read the ADC channels.

- qcom,cold-bat-decidegc	Cold battery temperature in decidegC.

- qcom,hot-bat-decidegc		Hot battery temperature in decidegC.

- qcom,bat-present-decidegc	This is a property indicating battery present temperature, if

				higher than it, battery should exist. Default value is negative,

				if this property is 200, it stands for -200 decidegC.

- qcom,warm-bat-decidegc:	Warm battery temperature in decidegC. After hitting this threshold,

				"qcom,warm-bat-ma" defines maximum charging current and

				"qcom,warm-bat-mv" defines maximum target voltage.

- qcom,cool-bat-decidegc:       Cool battery temperature in decidegC. After hitting this threshold,

				"qcom,cool-bat-ma" defines maximum charging current and

				"qcom,cool-bat-mv" defines maximum target voltage.

- qcom,warm-bat-ma:		Maximum warm battery charge current in milli-amps.

- qcom,cool-bat-ma:		Maximum cool battery charge current in milli-amps.

- qcom,warm-bat-mv:		Maximum warm battery target voltage in milli-volts.

- qcom,cool-bat-mv:		Maximum cool battery target voltage in milli-volts.

Example:

	i2c@f9967000 {

		smb358-charger@1b {

			compatible = "qcom,smb358-charger";

			reg = <0x1b>;

			interrupt-parent = <&msmgpio>;

			interrupts = <17 0x0>;

			qcom,irq-gpio = <&msmgpio 17 0x00>;

			qcom,vcc-i2c-supply = <&pm8226_lvs1>;

			qcom,float-voltage-mv = <4350>;

			qcom,disable-apsd;

			qcom,chg-inhibit-disabled;

			qcom,bms-controlled-charging;

			qcom,fastchg-current-max-ma = <1500>;

			qcom,bms-psy-name = "bms";

			qcom,chg-vadc = <&pm8226_vadc>;

			qcom,chg-adc_tm = <&pm8226_adc_tm>;

			qcom,hot-bat-decidegc = <500>;

			qcom,cold-bat-decidegc = <0>;

			qcom,bat-present-decidegc = <200>;

			qcom,warm-bat-decidegc = <450>;

			qcom,cool-bat-decidegc = <100>;

			qcom,warm-bat-ma = <350>;

			qcom,cool-bat-ma = <350>;

			qcom,warm-bat-mv = <4200>;

			qcom,cool-bat-mv = <4200>;

		};

	};