Merge "power: battery_current_limit: Support Vph battery voltage monitoring"

interested applications when the SOC is drawing current in excess of the limits

specified.

The BCL driver has another operation mode, where it monitors the battery

current sensor via ADC TM hardware called BTM. The newer devices support

current and voltage via ADC TM hardware called BTM. The newer devices support

a BTM hardware configuration, which can measure the battery current and voltage.

This ADC hardware is capable of sampling the sensor every 1 msec and interrupts

the BCL driver, which in turn mitigates the CPU frequency based on the

		should mitigate the CPUS's with. This frequency shouldn't be

		less than the minimum frequency request that the kernel thermal

		monitor driver places during vdd restriction.

	* ibat-channel: The ADC hardware's channel number.

	* ibat-channel: The ADC hardware's Ibat channel number.

	* uv-to-ua-numerator: The conversion parameter required for converting

		the voltage measure from ADC hardware to current value.

	* uv-to-ua-denominator: The conversion parameter required for

		ua = (uv * uv-to-ua-numerator) / uv-to-ua-denominator

	* adc-interval-usec: The polling interval, in microseconds, for the ADC

		hardware.

	* vph-channel: The ADC hardware's Vph channel number.

	* vph-high-threshold-uv: The battery voltage threshold above which the

		BCL driver clears the previously applied mitigation, disables

		the battery current monitoring, and starts monitoring for low

		battery voltage.

	* vph-low-threshold-uv: The battery voltage threshold below which the

		BCL driver starts monitoring the battery current thresholds and

		mitigates the CPU on the event of high load.

Example:

	qcom,bcl {

			adc-interval-usec = <3900>;

			uv-to-ua-numerator = <2>;

			uv-to-ua-denominator = <1>;

			vph-channel = <0x07>;

			vph-high-threshold-uv = <3700000>;

			vph-low-threshold-uv = <3500000>;

		};

	};