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@@ -1,3 +1,684 @@
+**General Properties**
+
+What: /sys/class/power_supply/<supply_name>/manufacturer
+Date: May 2007
+Contact: linux-pm@vger.kernel.org
+Description:
+ Reports the name of the device manufacturer.
+
+ Access: Read
+ Valid values: Represented as string
+
+What: /sys/class/power_supply/<supply_name>/model_name
+Date: May 2007
+Contact: linux-pm@vger.kernel.org
+Description:
+ Reports the name of the device model.
+
+ Access: Read
+ Valid values: Represented as string
+
+What: /sys/class/power_supply/<supply_name>/serial_number
+Date: January 2008
+Contact: linux-pm@vger.kernel.org
+Description:
+ Reports the serial number of the device.
+
+ Access: Read
+ Valid values: Represented as string
+
+What: /sys/class/power_supply/<supply_name>/type
+Date: May 2010
+Contact: linux-pm@vger.kernel.org
+Description:
+ Describes the main type of the supply.
+
+ Access: Read
+ Valid values: "Battery", "UPS", "Mains", "USB", "Wireless"
+
+**Battery and USB properties**
+
+What: /sys/class/power_supply/<supply_name>/current_avg
+Date: May 2007
+Contact: linux-pm@vger.kernel.org
+Description:
+ Battery:
+
+ Reports an average IBAT current reading for the battery, over
+ a fixed period. Normally devices will provide a fixed interval
+ in which they average readings to smooth out the reported
+ value.
+
+ USB:
+
+ Reports an average IBUS current reading over a fixed period.
+ Normally devices will provide a fixed interval in which they
+ average readings to smooth out the reported value.
+
+ Access: Read
+
+ Valid values: Represented in microamps. Negative values are
+ used for discharging batteries, positive values for charging
+ batteries and for USB IBUS current.
+
+What: /sys/class/power_supply/<supply_name>/current_max
+Date: October 2010
+Contact: linux-pm@vger.kernel.org
+Description:
+ Battery:
+
+ Reports the maximum IBAT current allowed into the battery.
+
+ USB:
+
+ Reports the maximum IBUS current the supply can support.
+
+ Access: Read
+ Valid values: Represented in microamps
+
+What: /sys/class/power_supply/<supply_name>/current_now
+Date: May 2007
+Contact: linux-pm@vger.kernel.org
+Description:
+
+ Battery:
+
+ Reports an instant, single IBAT current reading for the
+ battery. This value is not averaged/smoothed.
+
+ Access: Read
+
+ USB:
+
+ Reports the IBUS current supplied now. This value is generally
+ read-only reporting, unless the 'online' state of the supply
+ is set to be programmable, in which case this value can be set
+ within the reported min/max range.
+
+ Access: Read, Write
+
+ Valid values: Represented in microamps. Negative values are
+ used for discharging batteries, positive values for charging
+ batteries and for USB IBUS current.
+
+What: /sys/class/power_supply/<supply_name>/temp
+Date: May 2007
+Contact: linux-pm@vger.kernel.org
+Description:
+ Battery:
+
+ Reports the current TBAT battery temperature reading.
+
+ USB:
+
+ Reports the current supply temperature reading. This would
+ normally be the internal temperature of the device itself
+ (e.g TJUNC temperature of an IC)
+
+ Access: Read
+
+ Valid values: Represented in 1/10 Degrees Celsius
+
+What: /sys/class/power_supply/<supply_name>/temp_alert_max
+Date: July 2012
+Contact: linux-pm@vger.kernel.org
+Description:
+ Battery:
+
+ Maximum TBAT temperature trip-wire value where the supply will
+ notify user-space of the event.
+
+ USB:
+
+ Maximum supply temperature trip-wire value where the supply
+ will notify user-space of the event.
+
+ This is normally used for the charging scenario where
+ user-space needs to know if the temperature has crossed an
+ upper threshold so it can take appropriate action (e.g. warning
+ user that the temperature is critically high, and charging has
+ stopped).
+
+ Access: Read
+
+ Valid values: Represented in 1/10 Degrees Celsius
+
+What: /sys/class/power_supply/<supply_name>/temp_alert_min
+Date: July 2012
+Contact: linux-pm@vger.kernel.org
+Description:
+
+ Battery:
+
+ Minimum TBAT temperature trip-wire value where the supply will
+ notify user-space of the event.
+
+ USB:
+
+ Minimum supply temperature trip-wire value where the supply
+ will notify user-space of the event.
+
+ This is normally used for the charging scenario where user-space
+ needs to know if the temperature has crossed a lower threshold
+ so it can take appropriate action (e.g. warning user that
+ temperature level is high, and charging current has been
+ reduced accordingly to remedy the situation).
+
+ Access: Read
+
+ Valid values: Represented in 1/10 Degrees Celsius
+
+What: /sys/class/power_supply/<supply_name>/temp_max
+Date: July 2014
+Contact: linux-pm@vger.kernel.org
+Description:
+ Battery:
+
+ Reports the maximum allowed TBAT battery temperature for
+ charging.
+
+ USB:
+
+ Reports the maximum allowed supply temperature for operation.
+
+ Access: Read
+
+ Valid values: Represented in 1/10 Degrees Celsius
+
+What: /sys/class/power_supply/<supply_name>/temp_min
+Date: July 2014
+Contact: linux-pm@vger.kernel.org
+Description:
+ Battery:
+
+ Reports the minimum allowed TBAT battery temperature for
+ charging.
+
+ USB:
+
+ Reports the minimum allowed supply temperature for operation.
+
+ Access: Read
+
+ Valid values: Represented in 1/10 Degrees Celsius
+
+What: /sys/class/power_supply/<supply_name>/voltage_max,
+Date: January 2008
+Contact: linux-pm@vger.kernel.org
+Description:
+ Battery:
+
+ Reports the maximum safe VBAT voltage permitted for the
+ battery, during charging.
+
+ USB:
+
+ Reports the maximum VBUS voltage the supply can support.
+
+ Access: Read
+
+ Valid values: Represented in microvolts
+
+What: /sys/class/power_supply/<supply_name>/voltage_min,
+Date: January 2008
+Contact: linux-pm@vger.kernel.org
+Description:
+ Battery:
+
+ Reports the minimum safe VBAT voltage permitted for the
+ battery, during discharging.
+
+ USB:
+
+ Reports the minimum VBUS voltage the supply can support.
+
+ Access: Read
+
+ Valid values: Represented in microvolts
+
+What: /sys/class/power_supply/<supply_name>/voltage_now,
+Date: May 2007
+Contact: linux-pm@vger.kernel.org
+Description:
+ Battery:
+
+ Reports an instant, single VBAT voltage reading for the
+ battery. This value is not averaged/smoothed.
+
+ Access: Read
+
+ USB:
+
+ Reports the VBUS voltage supplied now. This value is generally
+ read-only reporting, unless the 'online' state of the supply
+ is set to be programmable, in which case this value can be set
+ within the reported min/max range.
+
+ Access: Read, Write
+
+ Valid values: Represented in microvolts
+
+**Battery Properties**
+
+What: /sys/class/power_supply/<supply_name>/capacity
+Date: May 2007
+Contact: linux-pm@vger.kernel.org
+Description:
+ Fine grain representation of battery capacity.
+
+ Access: Read
+
+ Valid values: 0 - 100 (percent)
+
+What: /sys/class/power_supply/<supply_name>/capacity_alert_max
+Date: July 2012
+Contact: linux-pm@vger.kernel.org
+Description:
+ Maximum battery capacity trip-wire value where the supply will
+ notify user-space of the event. This is normally used for the
+ battery discharging scenario where user-space needs to know the
+ battery has dropped to an upper level so it can take
+ appropriate action (e.g. warning user that battery level is
+ low).
+
+ Access: Read, Write
+
+ Valid values: 0 - 100 (percent)
+
+What: /sys/class/power_supply/<supply_name>/capacity_alert_min
+Date: July 2012
+Contact: linux-pm@vger.kernel.org
+Description:
+ Minimum battery capacity trip-wire value where the supply will
+ notify user-space of the event. This is normally used for the
+ battery discharging scenario where user-space needs to know the
+ battery has dropped to a lower level so it can take
+ appropriate action (e.g. warning user that battery level is
+ critically low).
+
+ Access: Read, Write
+
+ Valid values: 0 - 100 (percent)
+
+What: /sys/class/power_supply/<supply_name>/capacity_error_margin
+Date: April 2019
+Contact: linux-pm@vger.kernel.org
+Description:
+ Battery capacity measurement becomes unreliable without
+ recalibration. This values provides the maximum error
+ margin expected to exist by the fuel gauge in percent.
+ Values close to 0% will be returned after (re-)calibration
+ has happened. Over time the error margin will increase.
+ 100% means, that the capacity related values are basically
+ completely useless.
+
+ Access: Read
+
+ Valid values: 0 - 100 (percent)
+
+What: /sys/class/power_supply/<supply_name>/capacity_level
+Date: June 2009
+Contact: linux-pm@vger.kernel.org
+Description:
+ Coarse representation of battery capacity.
+
+ Access: Read
+
+ Valid values:
+ "Unknown", "Critical", "Low", "Normal", "High",
+ "Full"
+
+What: /sys/class/power_supply/<supply_name>/charge_control_limit
+Date: Oct 2012
+Contact: linux-pm@vger.kernel.org
+Description:
+ Maximum allowable charging current. Used for charge rate
+ throttling for thermal cooling or improving battery health.
+
+ Access: Read, Write
+
+ Valid values: Represented in microamps
+
+What: /sys/class/power_supply/<supply_name>/charge_control_limit_max
+Date: Oct 2012
+Contact: linux-pm@vger.kernel.org
+Description:
+ Maximum legal value for the charge_control_limit property.
+
+ Access: Read
+
+ Valid values: Represented in microamps
+
+What: /sys/class/power_supply/<supply_name>/charge_control_start_threshold
+Date: April 2019
+Contact: linux-pm@vger.kernel.org
+Description:
+ Represents a battery percentage level, below which charging will
+ begin.
+
+ Access: Read, Write
+ Valid values: 0 - 100 (percent)
+
+What: /sys/class/power_supply/<supply_name>/charge_control_end_threshold
+Date: April 2019
+Contact: linux-pm@vger.kernel.org
+Description:
+ Represents a battery percentage level, above which charging will
+ stop. Not all hardware is capable of setting this to an arbitrary
+ percentage. Drivers will round written values to the nearest
+ supported value. Reading back the value will show the actual
+ threshold set by the driver.
+
+ Access: Read, Write
+
+ Valid values: 0 - 100 (percent)
+
+What: /sys/class/power_supply/<supply_name>/charge_type
+Date: July 2009
+Contact: linux-pm@vger.kernel.org
+Description:
+ Select the charging algorithm to use for a battery.
+
+ Standard:
+ Fully charge the battery at a moderate rate.
+ Fast:
+ Quickly charge the battery using fast-charge
+ technology. This is typically harder on the battery
+ than standard charging and may lower its lifespan.
+ Trickle:
+ Users who primarily operate the system while
+ plugged into an external power source can extend
+ battery life with this mode. Vendor tooling may
+ call this "Primarily AC Use".
+ Adaptive:
+ Automatically optimize battery charge rate based
+ on typical usage pattern.
+ Custom:
+ Use the charge_control_* properties to determine
+ when to start and stop charging. Advanced users
+ can use this to drastically extend battery life.
+ Long Life:
+ The charger reduces its charging rate in order to
+ prolong the battery health.
+ Bypass:
+ The charger bypasses the charging path around the
+ integrated converter allowing for a "smart" wall
+ adaptor to perform the power conversion externally.
+
+ Access: Read, Write
+
+ Reading this returns the current active value, e.g. 'Standard'.
+ Check charge_types to get the values supported by the battery.
+
+ Valid values:
+ "Unknown", "N/A", "Trickle", "Fast", "Standard",
+ "Adaptive", "Custom", "Long Life", "Bypass"
+
+What: /sys/class/power_supply/<supply_name>/charge_types
+Date: December 2024
+Contact: linux-pm@vger.kernel.org
+Description:
+ Identical to charge_type but reading returns a list of supported
+ charge-types with the currently active type surrounded by square
+ brackets, e.g.: "Fast [Standard] Long_Life".
+
+ power_supply class devices may support both charge_type and
+ charge_types for backward compatibility. In this case both will
+ always have the same active value and the active value can be
+ changed by writing either property.
+
+ Note charge-types which contain a space such as "Long Life" will
+ have the space replaced by a '_' resulting in e.g. "Long_Life".
+ When writing charge-types both variants are accepted.
+
+What: /sys/class/power_supply/<supply_name>/charge_term_current
+Date: July 2014
+Contact: linux-pm@vger.kernel.org
+Description:
+ Reports the charging current value which is used to determine
+ when the battery is considered full and charging should end.
+
+ Access: Read
+
+ Valid values: Represented in microamps
+
+What: /sys/class/power_supply/<supply_name>/health
+Date: May 2007
+Contact: linux-pm@vger.kernel.org
+Description:
+ Reports the health of the battery or battery side of charger
+ functionality.
+
+ Access: Read
+
+ Valid values:
+ "Unknown", "Good", "Overheat", "Dead",
+ "Over voltage", "Under voltage", "Unspecified failure", "Cold",
+ "Watchdog timer expire", "Safety timer expire",
+ "Over current", "Calibration required", "Warm",
+ "Cool", "Hot", "No battery", "Blown fuse", "Cell imbalance"
+
+What: /sys/class/power_supply/<supply_name>/precharge_current
+Date: June 2017
+Contact: linux-pm@vger.kernel.org
+Description:
+ Reports the charging current applied during pre-charging phase
+ for a battery charge cycle.
+
+ Access: Read
+
+ Valid values: Represented in microamps
+
+What: /sys/class/power_supply/<supply_name>/present
+Date: May 2007
+Contact: linux-pm@vger.kernel.org
+Description:
+ Reports whether a battery is present or not in the system. If the
+ property does not exist, the battery is considered to be present.
+
+ Access: Read
+
+ Valid values:
+
+ == =======
+ 0: Absent
+ 1: Present
+ == =======
+
+What: /sys/class/power_supply/<supply_name>/status
+Date: May 2007
+Contact: linux-pm@vger.kernel.org
+Description:
+ Represents the charging status of the battery. Normally this
+ is read-only reporting although for some supplies this can be
+ used to enable/disable charging to the battery.
+
+ Access: Read, Write
+
+ Valid values:
+ "Unknown", "Charging", "Discharging",
+ "Not charging", "Full"
+
+What: /sys/class/power_supply/<supply_name>/charge_behaviour
+Date: November 2021
+Contact: linux-pm@vger.kernel.org
+Description:
+ Represents the charging behaviour.
+
+ Access: Read, Write
+
+ Valid values:
+ ===================== ========================================
+ auto: Charge normally, respect thresholds
+ inhibit-charge: Do not charge while AC is attached
+ inhibit-charge-awake: inhibit-charge only when device is awake
+ force-discharge: Force discharge while AC is attached
+ ===================== ========================================
+
+What: /sys/class/power_supply/<supply_name>/technology
+Date: May 2007
+Contact: linux-pm@vger.kernel.org
+Description:
+ Describes the battery technology supported by the supply.
+
+ Access: Read
+
+ Valid values:
+ "Unknown", "NiMH", "Li-ion", "Li-poly", "LiFe",
+ "NiCd", "LiMn"
+
+
+What: /sys/class/power_supply/<supply_name>/voltage_avg,
+Date: May 2007
+Contact: linux-pm@vger.kernel.org
+Description:
+ Reports an average VBAT voltage reading for the battery, over a
+ fixed period. Normally devices will provide a fixed interval in
+ which they average readings to smooth out the reported value.
+
+ Access: Read
+
+ Valid values: Represented in microvolts
+
+What: /sys/class/power_supply/<supply_name>/cycle_count
+Date: January 2010
+Contact: linux-pm@vger.kernel.org
+Description:
+ Reports the number of full charge + discharge cycles the
+ battery has undergone.
+
+ Access: Read
+
+ Valid values:
+ Integer > 0: representing full cycles
+ Integer = 0: cycle_count info is not available
+
+What: /sys/class/power_supply/<supply_name>/internal_resistance
+Date: August 2025
+Contact: linux-arm-msm@vger.kernel.org
+Description:
+ Represent the battery's internal resistance, often referred
+ to as Equivalent Series Resistance (ESR). It is a dynamic
+ parameter that reflects the opposition to current flow within
+ the cell. It is not a fixed value but varies significantly
+ based on several operational conditions, including battery
+ state of charge (SoC), temperature, and whether the battery
+ is in a charging or discharging state.
+
+ Access: Read
+
+ Valid values: Represented in microohms
+
+What: /sys/class/power_supply/<supply_name>/state_of_health
+Date: August 2025
+Contact: linux-arm-msm@vger.kernel.org
+Description:
+ The state_of_health parameter quantifies the overall condition
+ of a battery as a percentage, reflecting its ability to deliver
+ rated performance relative to its original specifications. It is
+ dynamically computed using a combination of learned capacity
+ and impedance-based degradation indicators, both of which evolve
+ over the battery's lifecycle.
+ Note that the exact algorithms are kept secret by most battery
+ vendors and the value from different battery vendors cannot be
+ compared with each other as there is no vendor-agnostic definition
+ of "performance". Also this usually cannot be used for any
+ calculations (i.e. this is not the factor between charge_full and
+ charge_full_design).
+
+ Access: Read
+
+ Valid values: 0 - 100 (percent)
+
+**USB Properties**
+
+What: /sys/class/power_supply/<supply_name>/input_current_limit
+Date: July 2014
+Contact: linux-pm@vger.kernel.org
+Description:
+ Details the incoming IBUS current limit currently set in the
+ supply. Normally this is configured based on the type of
+ connection made (e.g. A configured SDP should output a maximum
+ of 500mA so the input current limit is set to the same value).
+ Use preferably input_power_limit, and for problems that can be
+ solved using power limit use input_current_limit.
+
+ Access: Read, Write
+
+ Valid values: Represented in microamps
+
+What: /sys/class/power_supply/<supply_name>/input_voltage_limit
+Date: May 2019
+Contact: linux-pm@vger.kernel.org
+Description:
+ This entry configures the incoming VBUS voltage limit currently
+ set in the supply. Normally this is configured based on
+ system-level knowledge or user input (e.g. This is part of the
+ Pixel C's thermal management strategy to effectively limit the
+ input power to 5V when the screen is on to meet Google's skin
+ temperature targets). Note that this feature should not be
+ used for safety critical things.
+ Use preferably input_power_limit, and for problems that can be
+ solved using power limit use input_voltage_limit.
+
+ Access: Read, Write
+
+ Valid values: Represented in microvolts
+
+What: /sys/class/power_supply/<supply_name>/input_power_limit
+Date: May 2019
+Contact: linux-pm@vger.kernel.org
+Description:
+ This entry configures the incoming power limit currently set
+ in the supply. Normally this is configured based on
+ system-level knowledge or user input. Use preferably this
+ feature to limit the incoming power and use current/voltage
+ limit only for problems that can be solved using power limit.
+
+ Access: Read, Write
+
+ Valid values: Represented in microwatts
+
+What: /sys/class/power_supply/<supply_name>/online,
+Date: May 2007
+Contact: linux-pm@vger.kernel.org
+Description:
+ Indicates if VBUS is present for the supply. When the supply is
+ online, and the supply allows it, then it's possible to switch
+ between online states (e.g. Fixed -> Programmable for a PD_PPS
+ USB supply so voltage and current can be controlled).
+
+ Access: Read, Write
+
+ Valid values:
+
+ == ==================================================
+ 0: Offline
+ 1: Online Fixed - Fixed Voltage Supply
+ 2: Online Programmable - Programmable Voltage Supply
+ == ==================================================
+
+What: /sys/class/power_supply/<supply_name>/usb_type
+Date: March 2018
+Contact: linux-pm@vger.kernel.org
+Description:
+ Reports what type of USB connection is currently active for
+ the supply, for example it can show if USB-PD capable source
+ is attached.
+
+ Access: For power-supplies which consume USB power such
+ as battery charger chips, this indicates the type of
+ the connected USB power source and is Read-Only.
+
+ For power-supplies which act as a USB power-source such as
+ e.g. the UCS1002 USB Port Power Controller this is writable.
+
+ Valid values:
+ "Unknown", "SDP", "DCP", "CDP", "ACA", "C", "PD",
+ "PD_DRP", "PD_PPS", "BrickID"
+
+**Device Specific Properties**
+
What: /sys/class/power/ds2760-battery.*/charge_now
Date: May 2010
KernelVersion: 2.6.35
@@ -18,3 +699,207 @@ Description:
This file is writeable and can be used to set the assumed
battery 'full level'. As batteries age, this value has to be
amended over time.
+
+What: /sys/class/power_supply/max14577-charger/device/fast_charge_timer
+Date: October 2014
+KernelVersion: 3.18.0
+Contact: Krzysztof Kozlowski <krzk@kernel.org>
+Description:
+ This entry shows and sets the maximum time the max14577
+ charger operates in fast-charge mode. When the timer expires
+ the device will terminate fast-charge mode (charging current
+ will drop to 0 A) and will trigger interrupt.
+
+ Valid values:
+
+ - 5, 6 or 7 (hours),
+ - 0: disabled.
+
+What: /sys/class/power_supply/max77693-charger/device/fast_charge_timer
+Date: January 2015
+KernelVersion: 3.19.0
+Contact: Krzysztof Kozlowski <krzk@kernel.org>
+Description:
+ This entry shows and sets the maximum time the max77693
+ charger operates in fast-charge mode. When the timer expires
+ the device will terminate fast-charge mode (charging current
+ will drop to 0 A) and will trigger interrupt.
+
+ Valid values:
+
+ - 4 - 16 (hours), step by 2 (rounded down)
+ - 0: disabled.
+
+What: /sys/class/power_supply/max77693-charger/device/top_off_threshold_current
+Date: January 2015
+KernelVersion: 3.19.0
+Contact: Krzysztof Kozlowski <krzk@kernel.org>
+Description:
+ This entry shows and sets the charging current threshold for
+ entering top-off charging mode. When charging current in fast
+ charge mode drops below this value, the charger will trigger
+ interrupt and start top-off charging mode.
+
+ Valid values:
+
+ - 100000 - 200000 (microamps), step by 25000 (rounded down)
+ - 200000 - 350000 (microamps), step by 50000 (rounded down)
+ - 0: disabled.
+
+What: /sys/class/power_supply/max77693-charger/device/top_off_timer
+Date: January 2015
+KernelVersion: 3.19.0
+Contact: Krzysztof Kozlowski <krzk@kernel.org>
+Description:
+ This entry shows and sets the maximum time the max77693
+ charger operates in top-off charge mode. When the timer expires
+ the device will terminate top-off charge mode (charging current
+ will drop to 0 A) and will trigger interrupt.
+
+ Valid values:
+
+ - 0 - 70 (minutes), step by 10 (rounded down)
+
+What: /sys/class/power_supply/bq24257-charger/ovp_voltage
+Date: October 2015
+KernelVersion: 4.4.0
+Contact: Andreas Dannenberg <dannenberg@ti.com>
+Description:
+ This entry configures the overvoltage protection feature of bq24257-
+ type charger devices. This feature protects the device and other
+ components against damage from overvoltage on the input supply. See
+ device datasheet for details.
+
+ Valid values:
+
+ - 6000000, 6500000, 7000000, 8000000, 9000000, 9500000, 10000000,
+ 10500000 (all uV)
+
+What: /sys/class/power_supply/bq24257-charger/in_dpm_voltage
+Date: October 2015
+KernelVersion: 4.4.0
+Contact: Andreas Dannenberg <dannenberg@ti.com>
+Description:
+ This entry configures the input dynamic power path management voltage of
+ bq24257-type charger devices. Once the supply drops to the configured
+ voltage, the input current limit is reduced down to prevent the further
+ drop of the supply. When the IC enters this mode, the charge current is
+ lower than the set value. See device datasheet for details.
+
+ Valid values:
+
+ - 4200000, 4280000, 4360000, 4440000, 4520000, 4600000, 4680000,
+ 4760000 (all uV)
+
+What: /sys/class/power_supply/bq24257-charger/high_impedance_enable
+Date: October 2015
+KernelVersion: 4.4.0
+Contact: Andreas Dannenberg <dannenberg@ti.com>
+Description:
+ This entry allows enabling the high-impedance mode of bq24257-type
+ charger devices. If enabled, it places the charger IC into low power
+ standby mode with the switch mode controller disabled. When disabled,
+ the charger operates normally. See device datasheet for details.
+
+ Valid values:
+
+ - 1: enabled
+ - 0: disabled
+
+What: /sys/class/power_supply/bq24257-charger/sysoff_enable
+Date: October 2015
+KernelVersion: 4.4.0
+Contact: Andreas Dannenberg <dannenberg@ti.com>
+Description:
+ This entry allows enabling the sysoff mode of bq24257-type charger
+ devices. If enabled and the input is removed, the internal battery FET
+ is turned off in order to reduce the leakage from the BAT pin to less
+ than 1uA. Note that on some devices/systems this disconnects the battery
+ from the system. See device datasheet for details.
+
+ Valid values:
+
+ - 1: enabled
+ - 0: disabled
+
+What: /sys/class/power_supply/<supply_name>/manufacture_year
+Date: January 2020
+Contact: linux-pm@vger.kernel.org
+Description:
+ Reports the year (following Gregorian calendar) when the device has been
+ manufactured.
+
+ Access: Read
+
+ Valid values: Reported as integer
+
+What: /sys/class/power_supply/<supply_name>/manufacture_month
+Date: January 2020
+Contact: linux-pm@vger.kernel.org
+Description:
+ Reports the month when the device has been manufactured.
+
+ Access: Read
+
+ Valid values: 1-12
+
+What: /sys/class/power_supply/<supply_name>/manufacture_day
+Date: January 2020
+Contact: linux-pm@vger.kernel.org
+Description:
+ Reports the day of month when the device has been manufactured.
+
+ Access: Read
+ Valid values: 1-31
+
+What: /sys/class/power_supply/<supply_name>/extensions/<extension_name>
+Date: March 2025
+Contact: linux-pm@vger.kernel.org
+Description:
+ Reports the extensions registered to the power supply.
+ Each entry is a link to the device which registered the extension.
+
+ Access: Read
+
+What: /sys/class/power_supply/max8971-charger/fast_charge_timer
+Date: May 2025
+KernelVersion: 6.15.0
+Contact: Svyatoslav Ryhel <clamor95@gmail.com>
+Description:
+ This entry shows and sets the maximum time the max8971
+ charger operates in fast-charge mode. When the timer expires
+ the device will terminate fast-charge mode (charging current
+ will drop to 0 A) and will trigger interrupt.
+
+ Valid values:
+
+ - 4 - 10 (hours), step by 1
+ - 0: disabled.
+
+What: /sys/class/power_supply/max8971-charger/top_off_threshold_current
+Date: May 2025
+KernelVersion: 6.15.0
+Contact: Svyatoslav Ryhel <clamor95@gmail.com>
+Description:
+ This entry shows and sets the charging current threshold for
+ entering top-off charging mode. When charging current in fast
+ charge mode drops below this value, the charger will trigger
+ interrupt and start top-off charging mode.
+
+ Valid values:
+
+ - 50000 - 200000 (microamps), step by 50000 (rounded down)
+
+What: /sys/class/power_supply/max8971-charger/top_off_timer
+Date: May 2025
+KernelVersion: 6.15.0
+Contact: Svyatoslav Ryhel <clamor95@gmail.com>
+Description:
+ This entry shows and sets the maximum time the max8971
+ charger operates in top-off charge mode. When the timer expires
+ the device will terminate top-off charge mode (charging current
+ will drop to 0 A) and will trigger interrupt.
+
+ Valid values:
+
+ - 0 - 70 (minutes), step by 10 (rounded down)