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Commit b0b8ba0c authored by Ram Chandrasekar's avatar Ram Chandrasekar Committed by Gerrit - the friendly Code Review server
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power: bcl: Add vendor specific prefix to the device tree entries 



Add vendor specific prefix to the device tree parameters
used by the BCL module

CRs-Fixed: 649121
Change-Id: I1c5a8ad21f28ff60f7e06265f2a0c47478389e36
Signed-off-by: default avatarRam Chandrasekar <rkumbako@codeaurora.org>
parent be4d7c35

Documentation/devicetree/bindings/arm/msm/bcl.txt

+34 −34
Original line number Diff line number Diff line
@@ -37,10 +37,10 @@ Optional parameters: 
		monitor mode.

- qcom,bcl-framework-interface: If this property is defined, then the BCL uses

		the BCL framework for monitoring battery voltage and current.

		When this property is defined, the 'high-threshold-uamp',

		'low-threshold-uamp', 'mitigation-freq-khz',

		'vph-high-threshold-uv', 'vph-low-threshold-uv' and

		'thermal-handle' properties should be defined in the

		When this property is defined, the 'qcom,high-threshold-uamp',

		'qcom,low-threshold-uamp', 'qcom,mitigation-freq-khz',

		'qcom,vph-high-threshold-uv', 'qcom,vph-low-threshold-uv' and

		'qcom,thermal-handle' properties should be defined in the

		'qcom,ibat-monitor' node.

- qcom,bcl-hotplug-list = <hotplug-phandle-list>: List of phandles to the cores

		that are to be hotplugged, when battery current limit condition
@@ -54,33 +54,33 @@ Optional nodes: 
		qcom,ibat-threshold-adc_tm are defined. Error in any of these

		properties will disable BTM mode of operation and will fall

		back to the available current monitor mode.

	* high-threshold-uamp: The battery current, in microampere, after which

		the BCL driver should cap the maximum frequency.

	* low-threshold-uamp: The battery current, in microampere, below which

		the BCL driver should clear the CPU frequency mitigation.

	* mitigation-freq-khz: The maximum frequency value the BCL driver

	* qcom,high-threshold-uamp: The battery current, in microampere, after

		which the BCL driver should cap the maximum frequency.

	* qcom,low-threshold-uamp: The battery current, in microampere, below

		which the BCL driver should clear the CPU frequency mitigation.

	* qcom,mitigation-freq-khz: The maximum frequency value the BCL driver

		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 Ibat channel number.

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

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

	* qcom,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

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

		converting the voltage measure from ADC hardware to current.

		The microvolt to microampere (or vice-versa) conversion uses

		the below conversion formulae.

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

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

	* qcom,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

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

	* qcom,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

	* qcom,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.

	* thermal-handle = <&phandle_to_vdd_apps>: phandle to the "qcom,msm_thermal"

	* qcom,thermal-handle = <&phandle_to_vdd_apps>: phandle to the "qcom,msm_thermal"

		vdd restriction property, "qcom,vdd-apps-rstr". This phandle is

		used by BCL driver to get the minimum frequency request that the

		thermal driver places during vdd restriction. This frequency
@@ -93,17 +93,17 @@ Example: 
		qcom,ibat-vadc = <&pma8084_vadc>;

		qcom,ibat-threshold-adc_tm = <&pma8084_adc_tm>;

		qcom,ibat-monitor {

			high-threshold-uamp = <1500>;

			low-threshold-uamp = <500>;

			mitigation-freq-khz = <1958400>;

			ibat-channel = <0x15>;

			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>;

			thermal-handle = <&msm_thermal_freq>;

			qcom,high-threshold-uamp = <1500>;

			qcom,low-threshold-uamp = <500>;

			qcom,mitigation-freq-khz = <1958400>;

			qcom,ibat-channel = <0x15>;

			qcom,adc-interval-usec = <3900>;

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

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

			qcom,vph-channel = <0x07>;

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

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

			qcom,thermal-handle = <&msm_thermal_freq>;

		};

	};

For Using BCL peripheral interface:
@@ -112,12 +112,12 @@ For Using BCL peripheral interface: 
		qcom,bcl-framework-interface;

		qcom,bcl-hotplug-list = <&CPU5 &CPU6 &CPU7>;

		qcom,ibat-monitor {

			high-threshold-uamp = <1500>;

			low-threshold-uamp = <500>;

			mitigation-freq-khz = <1958400>;

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

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

			thermal-handle = <&msm_thermal_freq>;

			qcom,high-threshold-uamp = <1500>;

			qcom,low-threshold-uamp = <500>;

			qcom,mitigation-freq-khz = <1958400>;

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

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

			qcom,thermal-handle = <&msm_thermal_freq>;

		};

	};

drivers/power/battery_current_limit.c

+16 −16
Original line number Diff line number Diff line
@@ -1375,7 +1375,7 @@ static void get_vdd_rstr_freq(struct bcl_context *bcl, 
	struct device_node *phandle = NULL;

	char *key = NULL;



	key = "thermal-handle";

	key = "qcom,thermal-handle";

	phandle = of_parse_phandle(ibat_node, key, 0);

	if (!phandle) {

		pr_err("Thermal handle not present\n");
@@ -1409,15 +1409,15 @@ static int probe_bcl_periph_prop(struct bcl_context *bcl) 
		goto ibat_probe_exit;

	}



	BCL_FETCH_DT_U32(ibat_node, key, "low-threshold-uamp", ret,

	BCL_FETCH_DT_U32(ibat_node, key, "qcom,low-threshold-uamp", ret,

		bcl->ibat_low_thresh.trip_value, ibat_probe_exit);

	BCL_FETCH_DT_U32(ibat_node, key, "high-threshold-uamp", ret,

	BCL_FETCH_DT_U32(ibat_node, key, "qcom,high-threshold-uamp", ret,

		bcl->ibat_high_thresh.trip_value, ibat_probe_exit);

	BCL_FETCH_DT_U32(ibat_node, key, "mitigation-freq-khz", ret,

	BCL_FETCH_DT_U32(ibat_node, key, "qcom,mitigation-freq-khz", ret,

		bcl->bcl_p_freq_max, ibat_probe_exit);

	BCL_FETCH_DT_U32(ibat_node, key, "vph-high-threshold-uv", ret,

	BCL_FETCH_DT_U32(ibat_node, key, "qcom,vph-high-threshold-uv", ret,

		bcl->vbat_high_thresh.trip_value, ibat_probe_exit);

	BCL_FETCH_DT_U32(ibat_node, key, "vph-low-threshold-uv", ret,

	BCL_FETCH_DT_U32(ibat_node, key, "qcom,vph-low-threshold-uv", ret,

		bcl->vbat_low_thresh.trip_value, ibat_probe_exit);

	bcl->vbat_high_thresh.trip_notify

		= bcl->vbat_low_thresh.trip_notify = bcl_periph_vbat_notify;
@@ -1461,57 +1461,57 @@ static int probe_btm_properties(struct bcl_context *bcl) 
		goto btm_probe_exit;

	}



	key = "uv-to-ua-numerator";

	key = "qcom,uv-to-ua-numerator";

	ret = of_property_read_u32(ibat_node, key,

			&bcl->btm_uv_to_ua_numerator);

	if (ret < 0)

		goto btm_probe_exit;



	key = "uv-to-ua-denominator";

	key = "qcom,uv-to-ua-denominator";

	ret = of_property_read_u32(ibat_node, key,

			&bcl->btm_uv_to_ua_denominator);

	if (ret < 0)

		goto btm_probe_exit;



	key = "low-threshold-uamp";

	key = "qcom,low-threshold-uamp";

	ret = of_property_read_u32(ibat_node, key, &curr_ua);

	if (ret < 0)

		goto btm_probe_exit;

	bcl->btm_low_threshold_uv = current_to_voltage(bcl, curr_ua);



	key = "high-threshold-uamp";

	key = "qcom,high-threshold-uamp";

	ret = of_property_read_u32(ibat_node, key, &curr_ua);

	if (ret < 0)

		goto btm_probe_exit;

	bcl->btm_high_threshold_uv = current_to_voltage(bcl, curr_ua);



	key = "mitigation-freq-khz";

	key = "qcom,mitigation-freq-khz";

	ret = of_property_read_u32(ibat_node, key, &bcl->btm_freq_max);

	if (ret < 0)

		goto btm_probe_exit;



	key = "ibat-channel";

	key = "qcom,ibat-channel";

	ret = of_property_read_u32(ibat_node, key, &bcl->btm_ibat_chan);

	if (ret < 0)

		goto btm_probe_exit;



	key = "adc-interval-usec";

	key = "qcom,adc-interval-usec";

	ret = of_property_read_u32(ibat_node, key, &adc_interval_us);

	if (ret < 0)

		goto btm_probe_exit;

	bcl->btm_adc_interval = uSec_to_adc_time(bcl, adc_interval_us);



	key = "vph-channel";

	key = "qcom,vph-channel";

	ret = of_property_read_u32(ibat_node, key, &bcl->btm_vph_chan);

	if (ret < 0)

		goto btm_probe_exit;



	key = "vph-high-threshold-uv";

	key = "qcom,vph-high-threshold-uv";

	ret = of_property_read_u32(ibat_node, key, &bcl->btm_vph_high_thresh);

	if (ret < 0)

		goto btm_probe_exit;



	key = "vph-low-threshold-uv";

	key = "qcom,vph-low-threshold-uv";

	ret = of_property_read_u32(ibat_node, key, &bcl->btm_vph_low_thresh);

	if (ret < 0)

		goto btm_probe_exit;