Documentation/devicetree/bindings/power/qpnp-charger.txt - kernel/msm - Gitiles

 Qualcomm QPNP Charger

 The charger supports the switch mode battery charger and boost (SMBB)
 peripherals on Qualcomm PMIC chips.

 There are seven different peripherals adding the following functionality.
 Each of these peripherals are implemented as subnodes in the example at the
 end of this file.

 - qcom,chgr:		Supports charging control and status
 			reporting.
 - qcom,bat-if:		Battery status reporting such as presence,
 			temperature reporting and voltage collapse
 			protection.
 - qcom,buck:		Charger buck configuration and status
 			reporting with regards to several regulation
 			loops such as vdd, ibat etc.
 - qcom,usb-chgpth:	USB charge path detection and input current
 			limiting configuration.
 - qcom,dc-chgpth:	DC charge path detection and input current
 			limiting configuration.
 - qcom,chg-misc:	Miscellaneous features such as buck frequency
 			settings, comparator override features etc.

 Parent node required properties:
 - qcom,vddmax-mv:			Target voltage of battery in mV.
 - qcom,vddsafe-mv:			Maximum Vdd voltage in mV.
 - qcom,vinmin-mv:			Minimum input voltage in mV.
 - qcom,ibatmax-ma:			Maximum battery charge current in mA
 - qcom,ibatsafe-ma:			Safety battery current setting
 - qcom,thermal-mitigation:		Array of ibatmax values for different
 					system thermal mitigation level.

 Parent node optional properties:
 - qcom,ibatterm-ma:			Current at which charging is terminated when
 					the analog end of charge option is selected.
 - qcom,maxinput-usb-ma:			Maximum input current USB.
 - qcom,maxinput-dc-ma:			Maximum input current DC.
 - qcom,vbatdet-delta-mv:		Battery charging resume delta.
 - qcom,charging-disabled:		Set this property to disable charging
 					by default. This can then be overriden
 					writing the the module parameter
 					"charging_disabled".
 - qcom,duty-cycle-100p:			Set this property to enable the 100% duty
 					cycle feature.
 - qcom,use-default-batt-values:		Set this flag to force reporting of
 					battery temperature of 250 decidegree
 					Celsius, state of charge to be 50%
 					and disable charging.
 - qcom,warm-bat-decidegc:		Warm battery temperature in decidegC.
 - qcom,cool-bat-decidegc:		Cool battery temperature in decidegC.
 					Note that if both warm and cool battery
 					temperatures are set, the corresponding
 					ibatmax and bat-mv properties are
 					required to be set.
 - qcom,ibatmax-cool-ma:			Maximum cool battery charge current.
 - qcom,ibatmax-warm-ma:			Maximum warm battery charge current.
 - qcom,warm-bat-mv:			Warm temperature battery target voltage.
 - qcom,cool-bat-mv:			Cool temperature battery target voltage.
 - qcom,tchg-mins:			Maximum total software initialized charge time.
 - qcom,bpd-detection:			Select a battery presence detection scheme by
 					specifying either "bpd_thm", "bpd_id" or
 					"bpd_thm_id". "bpd_thm" selects the temperature
 					pin, "bpd_id" uses the id pin for battery presence
 					detection, "bpd_thm_id" selects both.
 					If the property is not set, the temperatue pin will
 					be used.
 - qcom,btc-disabled:			If flag is set battery hot and cold monitoring is
 					disabled in hardware. This monitoring is turned on
 					by default.
 - qcom,batt-hot-percent:		Specify a supported hot threshold percentage.
 					Supported thresholds: 25% and 35%. If none is specified
 					hardware defaults will be used.
 - qcom,batt-cold-percent:		Specify a supported cold threshold percentage.
 					Supported thresholds: 70% and 80%. If none is specified
 					hardware defaults will be used.
 - otg-parent-supply			Specify a phandle to a parent supply regulator
 					for the OTG regulator.
 - boost-parent-supply			Specify a phandle to a parent supply regulator
 					for the boost regulator.
 - qcom,resume-soc			Capacity in percent at which charging should resume
 					when a fully charged battery drops below this level.
 - qcom,chg-vadc				Corresponding VADC device's phandle.
 - qcom,pmic-revid			The phandle to the revid node of the pmic on which charger
 					peripheral is present. This property is a must on PMIC chips
 					that exhibit inaccuracies in battery current readings. This
 					phandle is used to check the version of the PMIC and apply
 					necessary software workarounds.
 - qcom,ovp-monitor-en			The ovp is enabled on hw by default. If this flag is
 					set, the charger ovp status is monitored in software.
 Sub node required structure:
 - A qcom,chg node must be a child of an SPMI node that has specified
 	the spmi-dev-container property. Each subnode reflects
 	a hardware peripheral which adds a unique set of features
 	to the collective charging device. For example USB detection
 	and the battery interface are each seperate peripherals and
 	each should be their own subnode.
 - qcom,chg-adc_tm			Corresponding ADC TM device's phandle to set recurring
 					measurements and receive notification for batt_therm.

 Sub node required properties:
 - compatible:		Must be "qcom,qpnp-charger".
 - reg:			Specifies the SPMI address and size for this peripheral.
 - interrupts:		Specifies the interrupt associated with the peripheral.
 - interrupt-names:	Specifies the interrupt names for the peripheral. Every
 			available interrupt needs to have an associated name
 			with it to indentify its purpose.

 			The following lists each subnode and their corresponding
 			required interrupt names:

 			qcom,usb-chgpth:
 			 - usbin-valid
 			 - usb-ocp (only for SMBBP and SMBCL)

 			qcom,chgr:
 			 - chg-done
 			 - chg-failed

 			The following interrupts are available:

 			qcom,chgr:
 			 - chg-done:		Triggers on charge completion.
 			 - chg-failed:		Notifies of charge failures.
 			 - fast-chg-on:		Notifies of fast charging state.
 			 - trkl-chg-on:		Indicates trickle charging.
 			 - state-change:	Notifies of a state change in
 						the charger state machine.
 			 - chgwdog:		Charger watchdog interrupt.
 			 - vbat-det-hi:		Triggers on vbat-det-hi voltage
 						setting,can be used as
 						battery alarm.
 			 - vbat-det-hi:		Triggers on vbat-det-low voltage
 						setting, can be used as
 						battery alarm.

 			qcom,buck:
 			 - vdd-loop:		VDD loop change interrupt.
 			 - ibat-loop:		Ibat loop change interrupt.
 			 - ichg-loop:		Charge current loop change.
 			 - vchg-loop:		Charge voltage loop change.
 			 - overtemp:		Overtemperature interrupt.
 			 - vref-ov:		Reference overvoltage interrupt.
 			 - vbat-ov:		Battery overvoltage interrupt.

 			qcom,bat-if:
 			 - psi:			PMIC serial interface interrupt.
 			 - vcp-on:		Voltage collapse protection
 						status interrupt.
 			 - bat-fet-on:		BATFET status interrupt.
 			 - bat-temp-ok:		Battery temperature status
 						interrupt.
 			 - batt-pres:		Battery presence status
 						interrupt.

 			qcom,usb-chgpth:
 			 - usbin-valid:		Indicates valid USB connection.
 			 - coarse-det-usb:	Coarse detect interrupt triggers
 						at low voltage on USB_IN.
 			 - chg-gone:		Triggers on VCHG line.
 			 - usb-ocp		Triggers on over current conditions when
 						reverse boosting. (Only available on
 						SMBCL and SMBBP devices).

 			qcom,dc-chgpth:
 			 - dcin-valid:		Indicates a valid DC charger
 						connection.
 			 - coarse-det-dc:	Coarse detect interrupt triggers
 						at low voltage on DC_IN.

 			qcom,boost:
 			 - limit-error:		Limiting error on SMBB boost.
 			 - boost-pwr-ok:	Status of boost power.

 Sub node optional properties:
 			qcom,usb-chgpth:
 			 - regulator-name:	A string used as a descriptive name
 						for the OTG regulator.
 			qcom,boost:
 			 - regulator-min-microvolt:	Minimum boost voltage setting.
 			 - regulator-max-microvolt:	Maximum boost voltage setting.
 			 - regulator-name:	A string used as a descriptive name
 						for the boost regulator.

 			qcom,batfet:
 			 - regulator-name:	A string used as a descriptive name
 						for the batfet regulator.
 Example:
 	pm8941-chg {
 		spmi-dev-container;
 		compatible = "qcom,qpnp-charger";
 		#address-cells = <1>;
 		#size-cells = <1>;

 		otg-parent-supply = <&pm8941_boost>;
 		boost-parent-supply = <&foo_parent_reg>;

 		qcom,vddmax-mv = <4200>;
 		qcom,vddsafe-mv = <4200>;
 		qcom,vinmin-mv = <4200>;
 		qcom,ibatmax-ma = <1500>;
 		qcom,ibatterm-ma = <200>;
 		qcom,ibatsafe-ma = <1500>;
 		qcom,thermal-mitigation = <1500 700 600 325>;
 		qcom,cool-bat-degc = <10>;
 		qcom,cool-bat-mv = <4100>;
 		qcom,ibatmax-warm-ma = <350>;
 		qcom,warm-bat-degc = <45>;
 		qcom,warm-bat-mv = <4100>;
 		qcom,ibatmax-cool-ma = <350>;
 		qcom,vbatdet-delta-mv = <60>;
 		qcom,batt-hot-percent = <25>;
 		qcom,batt-cold-percent = <85>;
 		qcom,btc-disabled = <0>;
 		qcom,chg-vadc = <&pm8941_vadc>;
 		qcom,chg-adc_tm = <&pm8941_adc_tm>;
 		qcom,pmic-revid = <&pm8941_revid>;

 		qcom,chgr@1000 {
 			reg = <0x1000 0x100>;
 			interrupts =	<0x0 0x10 0x0>,
 				<0x0 0x10 0x1>,
 					<0x0 0x10 0x2>,
 					<0x0 0x10 0x3>,
 					<0x0 0x10 0x4>,
 					<0x0 0x10 0x5>,
 					<0x0 0x10 0x6>,
 					<0x0 0x10 0x7>;

 			interrupt-names =	"chg-done",
 						"chg-failed",
 						"fast-chg-on",
 						"trkl-chg-on",
 						"state-change",
 						"chgwdog",
 						"vbat-det-hi",
 						"vbat-det-lo";
 		};

 		qcom,buck@1100 {
 			reg = <0x1100 0x100>;
 			interrupts =	<0x0 0x11 0x0>,
 					<0x0 0x11 0x1>,
 					<0x0 0x11 0x2>,
 					<0x0 0x11 0x3>,
 					<0x0 0x11 0x4>,
 					<0x0 0x11 0x5>,
 					<0x0 0x11 0x6>;

 			interrupt-names =	"vdd-loop",
 						"ibat-loop",
 						"ichg-loop",
 						"vchg-loop",
 						"overtemp",
 						"vref-ov",
 						"vbat-ov";
 		};

 		qcom,bat-if@1200 {
 			reg = <0x1200 0x100>;
 			interrupts =	<0x0 0x12 0x0>,
 					<0x0 0x12 0x1>,
 					<0x0 0x12 0x2>,
 					<0x0 0x12 0x3>,
 					<0x0 0x12 0x4>;

 			interrupt-names =	"psi",
 						"vcp-on",
 						"bat-fet-on",
 						"bat-temp-ok",
 						"batt-pres";
 		};

 		pm8941_chg_otg: qcom,usb-chgpth@1300 {
 			reg = <0x1300 0x100>;
 			interrupts =	<0 0x13 0x0>,
 					<0 0x13 0x1>,
 					<0x0 0x13 0x2>;

 			interrupt-names =	"usbin-valid",
 						"coarse-det-usb",
 						"chg-gone";
 		};

 		qcom,dc-chgpth@1400 {
 			reg = <0x1400 0x100>;
 			interrupts =	<0x0 0x14 0x0>,
 					<0x0 0x14 0x1>;

 			interrupt-names =	"dcin-valid",
 						"coarse-det-dc";
 		};

 		pm8941_chg_boost: qcom,boost@1500 {
 			reg = <0x1500 0x100>;
 			interrupts =	<0x0 0x15 0x0>,
 					<0x0 0x15 0x1>;

 			interrupt-names =	"limit-error",
 						"boost-pwr-ok";
 		};

 		qcom,misc@1600 {
 			reg = <0x1600 0x100>;
 		};
 	};

 In regulator specific device tree file:

 	&pm8941_chg_boost {
 		regulator-min-microvolt = <5000000>;
 		regulator-max-microvolt = <5000000>;
 		regulator-name = "8941_smbb_boost";
 	};

 	&pm8941_chg_batif  {
 		regulator-name = "batfet";
 	};

 	&pm8941_chg_otg {
 		regulator-name = "8941_smbb_otg";
 	};
	Qualcomm QPNP Charger

	The charger supports the switch mode battery charger and boost (SMBB)
	peripherals on Qualcomm PMIC chips.

	There are seven different peripherals adding the following functionality.
	Each of these peripherals are implemented as subnodes in the example at the
	end of this file.

	- qcom,chgr: Supports charging control and status
	reporting.
	- qcom,bat-if: Battery status reporting such as presence,
	temperature reporting and voltage collapse
	protection.
	- qcom,buck: Charger buck configuration and status
	reporting with regards to several regulation
	loops such as vdd, ibat etc.
	- qcom,usb-chgpth: USB charge path detection and input current
	limiting configuration.
	- qcom,dc-chgpth: DC charge path detection and input current
	limiting configuration.
	- qcom,chg-misc: Miscellaneous features such as buck frequency
	settings, comparator override features etc.

	Parent node required properties:
	- qcom,vddmax-mv: Target voltage of battery in mV.
	- qcom,vddsafe-mv: Maximum Vdd voltage in mV.
	- qcom,vinmin-mv: Minimum input voltage in mV.
	- qcom,ibatmax-ma: Maximum battery charge current in mA
	- qcom,ibatsafe-ma: Safety battery current setting
	- qcom,thermal-mitigation: Array of ibatmax values for different
	system thermal mitigation level.

	Parent node optional properties:
	- qcom,ibatterm-ma: Current at which charging is terminated when
	the analog end of charge option is selected.
	- qcom,maxinput-usb-ma: Maximum input current USB.
	- qcom,maxinput-dc-ma: Maximum input current DC.
	- qcom,vbatdet-delta-mv: Battery charging resume delta.
	- qcom,charging-disabled: Set this property to disable charging
	by default. This can then be overriden
	writing the the module parameter
	"charging_disabled".
	- qcom,duty-cycle-100p: Set this property to enable the 100% duty
	cycle feature.
	- qcom,use-default-batt-values: Set this flag to force reporting of
	battery temperature of 250 decidegree
	Celsius, state of charge to be 50%
	and disable charging.
	- qcom,warm-bat-decidegc: Warm battery temperature in decidegC.
	- qcom,cool-bat-decidegc: Cool battery temperature in decidegC.
	Note that if both warm and cool battery
	temperatures are set, the corresponding
	ibatmax and bat-mv properties are
	required to be set.
	- qcom,ibatmax-cool-ma: Maximum cool battery charge current.
	- qcom,ibatmax-warm-ma: Maximum warm battery charge current.
	- qcom,warm-bat-mv: Warm temperature battery target voltage.
	- qcom,cool-bat-mv: Cool temperature battery target voltage.
	- qcom,tchg-mins: Maximum total software initialized charge time.
	- qcom,bpd-detection: Select a battery presence detection scheme by
	specifying either "bpd_thm", "bpd_id" or
	"bpd_thm_id". "bpd_thm" selects the temperature
	pin, "bpd_id" uses the id pin for battery presence
	detection, "bpd_thm_id" selects both.
	If the property is not set, the temperatue pin will
	be used.
	- qcom,btc-disabled: If flag is set battery hot and cold monitoring is
	disabled in hardware. This monitoring is turned on
	by default.
	- qcom,batt-hot-percent: Specify a supported hot threshold percentage.
	Supported thresholds: 25% and 35%. If none is specified
	hardware defaults will be used.
	- qcom,batt-cold-percent: Specify a supported cold threshold percentage.
	Supported thresholds: 70% and 80%. If none is specified
	hardware defaults will be used.
	- otg-parent-supply Specify a phandle to a parent supply regulator
	for the OTG regulator.
	- boost-parent-supply Specify a phandle to a parent supply regulator
	for the boost regulator.
	- qcom,resume-soc Capacity in percent at which charging should resume
	when a fully charged battery drops below this level.
	- qcom,chg-vadc Corresponding VADC device's phandle.
	- qcom,pmic-revid The phandle to the revid node of the pmic on which charger
	peripheral is present. This property is a must on PMIC chips
	that exhibit inaccuracies in battery current readings. This
	phandle is used to check the version of the PMIC and apply
	necessary software workarounds.
	- qcom,ovp-monitor-en The ovp is enabled on hw by default. If this flag is
	set, the charger ovp status is monitored in software.
	Sub node required structure:
	- A qcom,chg node must be a child of an SPMI node that has specified
	the spmi-dev-container property. Each subnode reflects
	a hardware peripheral which adds a unique set of features
	to the collective charging device. For example USB detection
	and the battery interface are each seperate peripherals and
	each should be their own subnode.
	- qcom,chg-adc_tm Corresponding ADC TM device's phandle to set recurring
	measurements and receive notification for batt_therm.

	Sub node required properties:
	- compatible: Must be "qcom,qpnp-charger".
	- reg: Specifies the SPMI address and size for this peripheral.
	- interrupts: Specifies the interrupt associated with the peripheral.
	- interrupt-names: Specifies the interrupt names for the peripheral. Every
	available interrupt needs to have an associated name
	with it to indentify its purpose.

	The following lists each subnode and their corresponding
	required interrupt names:

	qcom,usb-chgpth:
	- usbin-valid
	- usb-ocp (only for SMBBP and SMBCL)

	qcom,chgr:
	- chg-done
	- chg-failed

	The following interrupts are available:

	qcom,chgr:
	- chg-done: Triggers on charge completion.
	- chg-failed: Notifies of charge failures.
	- fast-chg-on: Notifies of fast charging state.
	- trkl-chg-on: Indicates trickle charging.
	- state-change: Notifies of a state change in
	the charger state machine.
	- chgwdog: Charger watchdog interrupt.
	- vbat-det-hi: Triggers on vbat-det-hi voltage
	setting,can be used as
	battery alarm.
	- vbat-det-hi: Triggers on vbat-det-low voltage
	setting, can be used as
	battery alarm.

	qcom,buck:
	- vdd-loop: VDD loop change interrupt.
	- ibat-loop: Ibat loop change interrupt.
	- ichg-loop: Charge current loop change.
	- vchg-loop: Charge voltage loop change.
	- overtemp: Overtemperature interrupt.
	- vref-ov: Reference overvoltage interrupt.
	- vbat-ov: Battery overvoltage interrupt.

	qcom,bat-if:
	- psi: PMIC serial interface interrupt.
	- vcp-on: Voltage collapse protection
	status interrupt.
	- bat-fet-on: BATFET status interrupt.
	- bat-temp-ok: Battery temperature status
	interrupt.
	- batt-pres: Battery presence status
	interrupt.

	qcom,usb-chgpth:
	- usbin-valid: Indicates valid USB connection.
	- coarse-det-usb: Coarse detect interrupt triggers
	at low voltage on USB_IN.
	- chg-gone: Triggers on VCHG line.
	- usb-ocp Triggers on over current conditions when
	reverse boosting. (Only available on
	SMBCL and SMBBP devices).

	qcom,dc-chgpth:
	- dcin-valid: Indicates a valid DC charger
	connection.
	- coarse-det-dc: Coarse detect interrupt triggers
	at low voltage on DC_IN.

	qcom,boost:
	- limit-error: Limiting error on SMBB boost.
	- boost-pwr-ok: Status of boost power.

	Sub node optional properties:
	qcom,usb-chgpth:
	- regulator-name: A string used as a descriptive name
	for the OTG regulator.
	qcom,boost:
	- regulator-min-microvolt: Minimum boost voltage setting.
	- regulator-max-microvolt: Maximum boost voltage setting.
	- regulator-name: A string used as a descriptive name
	for the boost regulator.

	qcom,batfet:
	- regulator-name: A string used as a descriptive name
	for the batfet regulator.
	Example:
	pm8941-chg {
	spmi-dev-container;
	compatible = "qcom,qpnp-charger";
	#address-cells = <1>;
	#size-cells = <1>;

	otg-parent-supply = <&pm8941_boost>;
	boost-parent-supply = <&foo_parent_reg>;

	qcom,vddmax-mv = <4200>;
	qcom,vddsafe-mv = <4200>;
	qcom,vinmin-mv = <4200>;
	qcom,ibatmax-ma = <1500>;
	qcom,ibatterm-ma = <200>;
	qcom,ibatsafe-ma = <1500>;
	qcom,thermal-mitigation = <1500 700 600 325>;
	qcom,cool-bat-degc = <10>;
	qcom,cool-bat-mv = <4100>;
	qcom,ibatmax-warm-ma = <350>;
	qcom,warm-bat-degc = <45>;
	qcom,warm-bat-mv = <4100>;
	qcom,ibatmax-cool-ma = <350>;
	qcom,vbatdet-delta-mv = <60>;
	qcom,batt-hot-percent = <25>;
	qcom,batt-cold-percent = <85>;
	qcom,btc-disabled = <0>;
	qcom,chg-vadc = <&pm8941_vadc>;
	qcom,chg-adc_tm = <&pm8941_adc_tm>;
	qcom,pmic-revid = <&pm8941_revid>;

	qcom,chgr@1000 {
	reg = <0x1000 0x100>;
	interrupts = <0x0 0x10 0x0>,
	<0x0 0x10 0x1>,
	<0x0 0x10 0x2>,
	<0x0 0x10 0x3>,
	<0x0 0x10 0x4>,
	<0x0 0x10 0x5>,
	<0x0 0x10 0x6>,
	<0x0 0x10 0x7>;

	interrupt-names = "chg-done",
	"chg-failed",
	"fast-chg-on",
	"trkl-chg-on",
	"state-change",
	"chgwdog",
	"vbat-det-hi",
	"vbat-det-lo";
	};

	qcom,buck@1100 {
	reg = <0x1100 0x100>;
	interrupts = <0x0 0x11 0x0>,
	<0x0 0x11 0x1>,
	<0x0 0x11 0x2>,
	<0x0 0x11 0x3>,
	<0x0 0x11 0x4>,
	<0x0 0x11 0x5>,
	<0x0 0x11 0x6>;

	interrupt-names = "vdd-loop",
	"ibat-loop",
	"ichg-loop",
	"vchg-loop",
	"overtemp",
	"vref-ov",
	"vbat-ov";
	};

	qcom,bat-if@1200 {
	reg = <0x1200 0x100>;
	interrupts = <0x0 0x12 0x0>,
	<0x0 0x12 0x1>,
	<0x0 0x12 0x2>,
	<0x0 0x12 0x3>,
	<0x0 0x12 0x4>;

	interrupt-names = "psi",
	"vcp-on",
	"bat-fet-on",
	"bat-temp-ok",
	"batt-pres";
	};

	pm8941_chg_otg: qcom,usb-chgpth@1300 {
	reg = <0x1300 0x100>;
	interrupts = <0 0x13 0x0>,
	<0 0x13 0x1>,
	<0x0 0x13 0x2>;

	interrupt-names = "usbin-valid",
	"coarse-det-usb",
	"chg-gone";
	};

	qcom,dc-chgpth@1400 {
	reg = <0x1400 0x100>;
	interrupts = <0x0 0x14 0x0>,
	<0x0 0x14 0x1>;

	interrupt-names = "dcin-valid",
	"coarse-det-dc";
	};

	pm8941_chg_boost: qcom,boost@1500 {
	reg = <0x1500 0x100>;
	interrupts = <0x0 0x15 0x0>,
	<0x0 0x15 0x1>;

	interrupt-names = "limit-error",
	"boost-pwr-ok";
	};

	qcom,misc@1600 {
	reg = <0x1600 0x100>;
	};
	};

	In regulator specific device tree file:

	&pm8941_chg_boost {
	regulator-min-microvolt = <5000000>;
	regulator-max-microvolt = <5000000>;
	regulator-name = "8941_smbb_boost";
	};

	&pm8941_chg_batif {
	regulator-name = "batfet";
	};

	&pm8941_chg_otg {
	regulator-name = "8941_smbb_otg";
	};