0001 **General Properties**
0002
0003 What: /sys/class/power_supply/<supply_name>/manufacturer
0004 Date: May 2007
0005 Contact: linux-pm@vger.kernel.org
0006 Description:
0007 Reports the name of the device manufacturer.
0008
0009 Access: Read
0010 Valid values: Represented as string
0011
0012 What: /sys/class/power_supply/<supply_name>/model_name
0013 Date: May 2007
0014 Contact: linux-pm@vger.kernel.org
0015 Description:
0016 Reports the name of the device model.
0017
0018 Access: Read
0019 Valid values: Represented as string
0020
0021 What: /sys/class/power_supply/<supply_name>/serial_number
0022 Date: January 2008
0023 Contact: linux-pm@vger.kernel.org
0024 Description:
0025 Reports the serial number of the device.
0026
0027 Access: Read
0028 Valid values: Represented as string
0029
0030 What: /sys/class/power_supply/<supply_name>/type
0031 Date: May 2010
0032 Contact: linux-pm@vger.kernel.org
0033 Description:
0034 Describes the main type of the supply.
0035
0036 Access: Read
0037 Valid values: "Battery", "UPS", "Mains", "USB", "Wireless"
0038
0039 **Battery and USB properties**
0040
0041 What: /sys/class/power_supply/<supply_name>/current_avg
0042 Date: May 2007
0043 Contact: linux-pm@vger.kernel.org
0044 Description:
0045 Battery:
0046
0047 Reports an average IBAT current reading for the battery, over
0048 a fixed period. Normally devices will provide a fixed interval
0049 in which they average readings to smooth out the reported
0050 value.
0051
0052 USB:
0053
0054 Reports an average IBUS current reading over a fixed period.
0055 Normally devices will provide a fixed interval in which they
0056 average readings to smooth out the reported value.
0057
0058 Access: Read
0059
0060 Valid values: Represented in microamps. Negative values are
0061 used for discharging batteries, positive values for charging
0062 batteries and for USB IBUS current.
0063
0064 What: /sys/class/power_supply/<supply_name>/current_max
0065 Date: October 2010
0066 Contact: linux-pm@vger.kernel.org
0067 Description:
0068 Battery:
0069
0070 Reports the maximum IBAT current allowed into the battery.
0071
0072 USB:
0073
0074 Reports the maximum IBUS current the supply can support.
0075
0076 Access: Read
0077 Valid values: Represented in microamps
0078
0079 What: /sys/class/power_supply/<supply_name>/current_now
0080 Date: May 2007
0081 Contact: linux-pm@vger.kernel.org
0082 Description:
0083
0084 Battery:
0085
0086 Reports an instant, single IBAT current reading for the
0087 battery. This value is not averaged/smoothed.
0088
0089 Access: Read
0090
0091 USB:
0092
0093 Reports the IBUS current supplied now. This value is generally
0094 read-only reporting, unless the 'online' state of the supply
0095 is set to be programmable, in which case this value can be set
0096 within the reported min/max range.
0097
0098 Access: Read, Write
0099
0100 Valid values: Represented in microamps. Negative values are
0101 used for discharging batteries, positive values for charging
0102 batteries and for USB IBUS current.
0103
0104 What: /sys/class/power_supply/<supply_name>/temp
0105 Date: May 2007
0106 Contact: linux-pm@vger.kernel.org
0107 Description:
0108 Battery:
0109
0110 Reports the current TBAT battery temperature reading.
0111
0112 USB:
0113
0114 Reports the current supply temperature reading. This would
0115 normally be the internal temperature of the device itself
0116 (e.g TJUNC temperature of an IC)
0117
0118 Access: Read
0119
0120 Valid values: Represented in 1/10 Degrees Celsius
0121
0122 What: /sys/class/power_supply/<supply_name>/temp_alert_max
0123 Date: July 2012
0124 Contact: linux-pm@vger.kernel.org
0125 Description:
0126 Battery:
0127
0128 Maximum TBAT temperature trip-wire value where the supply will
0129 notify user-space of the event.
0130
0131 USB:
0132
0133 Maximum supply temperature trip-wire value where the supply
0134 will notify user-space of the event.
0135
0136 This is normally used for the charging scenario where
0137 user-space needs to know if the temperature has crossed an
0138 upper threshold so it can take appropriate action (e.g. warning
0139 user that the temperature is critically high, and charging has
0140 stopped).
0141
0142 Access: Read
0143
0144 Valid values: Represented in 1/10 Degrees Celsius
0145
0146 What: /sys/class/power_supply/<supply_name>/temp_alert_min
0147 Date: July 2012
0148 Contact: linux-pm@vger.kernel.org
0149 Description:
0150
0151 Battery:
0152
0153 Minimum TBAT temperature trip-wire value where the supply will
0154 notify user-space of the event.
0155
0156 USB:
0157
0158 Minimum supply temperature trip-wire value where the supply
0159 will notify user-space of the event.
0160
0161 This is normally used for the charging scenario where user-space
0162 needs to know if the temperature has crossed a lower threshold
0163 so it can take appropriate action (e.g. warning user that
0164 temperature level is high, and charging current has been
0165 reduced accordingly to remedy the situation).
0166
0167 Access: Read
0168
0169 Valid values: Represented in 1/10 Degrees Celsius
0170
0171 What: /sys/class/power_supply/<supply_name>/temp_max
0172 Date: July 2014
0173 Contact: linux-pm@vger.kernel.org
0174 Description:
0175 Battery:
0176
0177 Reports the maximum allowed TBAT battery temperature for
0178 charging.
0179
0180 USB:
0181
0182 Reports the maximum allowed supply temperature for operation.
0183
0184 Access: Read
0185
0186 Valid values: Represented in 1/10 Degrees Celsius
0187
0188 What: /sys/class/power_supply/<supply_name>/temp_min
0189 Date: July 2014
0190 Contact: linux-pm@vger.kernel.org
0191 Description:
0192 Battery:
0193
0194 Reports the minimum allowed TBAT battery temperature for
0195 charging.
0196
0197 USB:
0198
0199 Reports the minimum allowed supply temperature for operation.
0200
0201 Access: Read
0202
0203 Valid values: Represented in 1/10 Degrees Celsius
0204
0205 What: /sys/class/power_supply/<supply_name>/voltage_max,
0206 Date: January 2008
0207 Contact: linux-pm@vger.kernel.org
0208 Description:
0209 Battery:
0210
0211 Reports the maximum safe VBAT voltage permitted for the
0212 battery, during charging.
0213
0214 USB:
0215
0216 Reports the maximum VBUS voltage the supply can support.
0217
0218 Access: Read
0219
0220 Valid values: Represented in microvolts
0221
0222 What: /sys/class/power_supply/<supply_name>/voltage_min,
0223 Date: January 2008
0224 Contact: linux-pm@vger.kernel.org
0225 Description:
0226 Battery:
0227
0228 Reports the minimum safe VBAT voltage permitted for the
0229 battery, during discharging.
0230
0231 USB:
0232
0233 Reports the minimum VBUS voltage the supply can support.
0234
0235 Access: Read
0236
0237 Valid values: Represented in microvolts
0238
0239 What: /sys/class/power_supply/<supply_name>/voltage_now,
0240 Date: May 2007
0241 Contact: linux-pm@vger.kernel.org
0242 Description:
0243 Battery:
0244
0245 Reports an instant, single VBAT voltage reading for the
0246 battery. This value is not averaged/smoothed.
0247
0248 Access: Read
0249
0250 USB:
0251
0252 Reports the VBUS voltage supplied now. This value is generally
0253 read-only reporting, unless the 'online' state of the supply
0254 is set to be programmable, in which case this value can be set
0255 within the reported min/max range.
0256
0257 Access: Read, Write
0258
0259 Valid values: Represented in microvolts
0260
0261 **Battery Properties**
0262
0263 What: /sys/class/power_supply/<supply_name>/capacity
0264 Date: May 2007
0265 Contact: linux-pm@vger.kernel.org
0266 Description:
0267 Fine grain representation of battery capacity.
0268
0269 Access: Read
0270
0271 Valid values: 0 - 100 (percent)
0272
0273 What: /sys/class/power_supply/<supply_name>/capacity_alert_max
0274 Date: July 2012
0275 Contact: linux-pm@vger.kernel.org
0276 Description:
0277 Maximum battery capacity trip-wire value where the supply will
0278 notify user-space of the event. This is normally used for the
0279 battery discharging scenario where user-space needs to know the
0280 battery has dropped to an upper level so it can take
0281 appropriate action (e.g. warning user that battery level is
0282 low).
0283
0284 Access: Read, Write
0285
0286 Valid values: 0 - 100 (percent)
0287
0288 What: /sys/class/power_supply/<supply_name>/capacity_alert_min
0289 Date: July 2012
0290 Contact: linux-pm@vger.kernel.org
0291 Description:
0292 Minimum battery capacity trip-wire value where the supply will
0293 notify user-space of the event. This is normally used for the
0294 battery discharging scenario where user-space needs to know the
0295 battery has dropped to a lower level so it can take
0296 appropriate action (e.g. warning user that battery level is
0297 critically low).
0298
0299 Access: Read, Write
0300
0301 Valid values: 0 - 100 (percent)
0302
0303 What: /sys/class/power_supply/<supply_name>/capacity_error_margin
0304 Date: April 2019
0305 Contact: linux-pm@vger.kernel.org
0306 Description:
0307 Battery capacity measurement becomes unreliable without
0308 recalibration. This values provides the maximum error
0309 margin expected to exist by the fuel gauge in percent.
0310 Values close to 0% will be returned after (re-)calibration
0311 has happened. Over time the error margin will increase.
0312 100% means, that the capacity related values are basically
0313 completely useless.
0314
0315 Access: Read
0316
0317 Valid values: 0 - 100 (percent)
0318
0319 What: /sys/class/power_supply/<supply_name>/capacity_level
0320 Date: June 2009
0321 Contact: linux-pm@vger.kernel.org
0322 Description:
0323 Coarse representation of battery capacity.
0324
0325 Access: Read
0326
0327 Valid values:
0328 "Unknown", "Critical", "Low", "Normal", "High",
0329 "Full"
0330
0331 What: /sys/class/power_supply/<supply_name>/charge_control_limit
0332 Date: Oct 2012
0333 Contact: linux-pm@vger.kernel.org
0334 Description:
0335 Maximum allowable charging current. Used for charge rate
0336 throttling for thermal cooling or improving battery health.
0337
0338 Access: Read, Write
0339
0340 Valid values: Represented in microamps
0341
0342 What: /sys/class/power_supply/<supply_name>/charge_control_limit_max
0343 Date: Oct 2012
0344 Contact: linux-pm@vger.kernel.org
0345 Description:
0346 Maximum legal value for the charge_control_limit property.
0347
0348 Access: Read
0349
0350 Valid values: Represented in microamps
0351
0352 What: /sys/class/power_supply/<supply_name>/charge_control_start_threshold
0353 Date: April 2019
0354 Contact: linux-pm@vger.kernel.org
0355 Description:
0356 Represents a battery percentage level, below which charging will
0357 begin.
0358
0359 Access: Read, Write
0360 Valid values: 0 - 100 (percent)
0361
0362 What: /sys/class/power_supply/<supply_name>/charge_control_end_threshold
0363 Date: April 2019
0364 Contact: linux-pm@vger.kernel.org
0365 Description:
0366 Represents a battery percentage level, above which charging will
0367 stop.
0368
0369 Access: Read, Write
0370
0371 Valid values: 0 - 100 (percent)
0372
0373 What: /sys/class/power_supply/<supply_name>/charge_type
0374 Date: July 2009
0375 Contact: linux-pm@vger.kernel.org
0376 Description:
0377 Represents the type of charging currently being applied to the
0378 battery. "Trickle", "Fast", and "Standard" all mean different
0379 charging speeds. "Adaptive" means that the charger uses some
0380 algorithm to adjust the charge rate dynamically, without
0381 any user configuration required. "Custom" means that the charger
0382 uses the charge_control_* properties as configuration for some
0383 different algorithm. "Long Life" means the charger reduces its
0384 charging rate in order to prolong the battery health. "Bypass"
0385 means the charger bypasses the charging path around the
0386 integrated converter allowing for a "smart" wall adaptor to
0387 perform the power conversion externally.
0388
0389 Access: Read, Write
0390
0391 Valid values:
0392 "Unknown", "N/A", "Trickle", "Fast", "Standard",
0393 "Adaptive", "Custom", "Long Life", "Bypass"
0394
0395 What: /sys/class/power_supply/<supply_name>/charge_term_current
0396 Date: July 2014
0397 Contact: linux-pm@vger.kernel.org
0398 Description:
0399 Reports the charging current value which is used to determine
0400 when the battery is considered full and charging should end.
0401
0402 Access: Read
0403
0404 Valid values: Represented in microamps
0405
0406 What: /sys/class/power_supply/<supply_name>/health
0407 Date: May 2007
0408 Contact: linux-pm@vger.kernel.org
0409 Description:
0410 Reports the health of the battery or battery side of charger
0411 functionality.
0412
0413 Access: Read
0414
0415 Valid values:
0416 "Unknown", "Good", "Overheat", "Dead",
0417 "Over voltage", "Unspecified failure", "Cold",
0418 "Watchdog timer expire", "Safety timer expire",
0419 "Over current", "Calibration required", "Warm",
0420 "Cool", "Hot", "No battery"
0421
0422 What: /sys/class/power_supply/<supply_name>/precharge_current
0423 Date: June 2017
0424 Contact: linux-pm@vger.kernel.org
0425 Description:
0426 Reports the charging current applied during pre-charging phase
0427 for a battery charge cycle.
0428
0429 Access: Read
0430
0431 Valid values: Represented in microamps
0432
0433 What: /sys/class/power_supply/<supply_name>/present
0434 Date: May 2007
0435 Contact: linux-pm@vger.kernel.org
0436 Description:
0437 Reports whether a battery is present or not in the system.
0438
0439 Access: Read
0440
0441 Valid values:
0442
0443 == =======
0444 0: Absent
0445 1: Present
0446 == =======
0447
0448 What: /sys/class/power_supply/<supply_name>/status
0449 Date: May 2007
0450 Contact: linux-pm@vger.kernel.org
0451 Description:
0452 Represents the charging status of the battery. Normally this
0453 is read-only reporting although for some supplies this can be
0454 used to enable/disable charging to the battery.
0455
0456 Access: Read, Write
0457
0458 Valid values:
0459 "Unknown", "Charging", "Discharging",
0460 "Not charging", "Full"
0461
0462 What: /sys/class/power_supply/<supply_name>/charge_behaviour
0463 Date: November 2021
0464 Contact: linux-pm@vger.kernel.org
0465 Description:
0466 Represents the charging behaviour.
0467
0468 Access: Read, Write
0469
0470 Valid values:
0471 ================ ====================================
0472 auto: Charge normally, respect thresholds
0473 inhibit-charge: Do not charge while AC is attached
0474 force-discharge: Force discharge while AC is attached
0475 ================ ====================================
0476
0477 What: /sys/class/power_supply/<supply_name>/technology
0478 Date: May 2007
0479 Contact: linux-pm@vger.kernel.org
0480 Description:
0481 Describes the battery technology supported by the supply.
0482
0483 Access: Read
0484
0485 Valid values:
0486 "Unknown", "NiMH", "Li-ion", "Li-poly", "LiFe",
0487 "NiCd", "LiMn"
0488
0489
0490 What: /sys/class/power_supply/<supply_name>/voltage_avg,
0491 Date: May 2007
0492 Contact: linux-pm@vger.kernel.org
0493 Description:
0494 Reports an average VBAT voltage reading for the battery, over a
0495 fixed period. Normally devices will provide a fixed interval in
0496 which they average readings to smooth out the reported value.
0497
0498 Access: Read
0499
0500 Valid values: Represented in microvolts
0501
0502 What: /sys/class/power_supply/<supply_name>/cycle_count
0503 Date: January 2010
0504 Contact: linux-pm@vger.kernel.org
0505 Description:
0506 Reports the number of full charge + discharge cycles the
0507 battery has undergone.
0508
0509 Access: Read
0510
0511 Valid values:
0512 Integer > 0: representing full cycles
0513 Integer = 0: cycle_count info is not available
0514
0515 **USB Properties**
0516
0517 What: /sys/class/power_supply/<supply_name>/input_current_limit
0518 Date: July 2014
0519 Contact: linux-pm@vger.kernel.org
0520 Description:
0521 Details the incoming IBUS current limit currently set in the
0522 supply. Normally this is configured based on the type of
0523 connection made (e.g. A configured SDP should output a maximum
0524 of 500mA so the input current limit is set to the same value).
0525 Use preferably input_power_limit, and for problems that can be
0526 solved using power limit use input_current_limit.
0527
0528 Access: Read, Write
0529
0530 Valid values: Represented in microamps
0531
0532 What: /sys/class/power_supply/<supply_name>/input_voltage_limit
0533 Date: May 2019
0534 Contact: linux-pm@vger.kernel.org
0535 Description:
0536 This entry configures the incoming VBUS voltage limit currently
0537 set in the supply. Normally this is configured based on
0538 system-level knowledge or user input (e.g. This is part of the
0539 Pixel C's thermal management strategy to effectively limit the
0540 input power to 5V when the screen is on to meet Google's skin
0541 temperature targets). Note that this feature should not be
0542 used for safety critical things.
0543 Use preferably input_power_limit, and for problems that can be
0544 solved using power limit use input_voltage_limit.
0545
0546 Access: Read, Write
0547
0548 Valid values: Represented in microvolts
0549
0550 What: /sys/class/power_supply/<supply_name>/input_power_limit
0551 Date: May 2019
0552 Contact: linux-pm@vger.kernel.org
0553 Description:
0554 This entry configures the incoming power limit currently set
0555 in the supply. Normally this is configured based on
0556 system-level knowledge or user input. Use preferably this
0557 feature to limit the incoming power and use current/voltage
0558 limit only for problems that can be solved using power limit.
0559
0560 Access: Read, Write
0561
0562 Valid values: Represented in microwatts
0563
0564 What: /sys/class/power_supply/<supply_name>/online,
0565 Date: May 2007
0566 Contact: linux-pm@vger.kernel.org
0567 Description:
0568 Indicates if VBUS is present for the supply. When the supply is
0569 online, and the supply allows it, then it's possible to switch
0570 between online states (e.g. Fixed -> Programmable for a PD_PPS
0571 USB supply so voltage and current can be controlled).
0572
0573 Access: Read, Write
0574
0575 Valid values:
0576
0577 == ==================================================
0578 0: Offline
0579 1: Online Fixed - Fixed Voltage Supply
0580 2: Online Programmable - Programmable Voltage Supply
0581 == ==================================================
0582
0583 What: /sys/class/power_supply/<supply_name>/usb_type
0584 Date: March 2018
0585 Contact: linux-pm@vger.kernel.org
0586 Description:
0587 Reports what type of USB connection is currently active for
0588 the supply, for example it can show if USB-PD capable source
0589 is attached.
0590
0591 Access: Read-Only
0592
0593 Valid values:
0594 "Unknown", "SDP", "DCP", "CDP", "ACA", "C", "PD",
0595 "PD_DRP", "PD_PPS", "BrickID"
0596
0597 **Device Specific Properties**
0598
0599 What: /sys/class/power/ds2760-battery.*/charge_now
0600 Date: May 2010
0601 KernelVersion: 2.6.35
0602 Contact: Daniel Mack <daniel@caiaq.de>
0603 Description:
0604 This file is writeable and can be used to set the current
0605 coloumb counter value inside the battery monitor chip. This
0606 is needed for unavoidable corrections of aging batteries.
0607 A userspace daemon can monitor the battery charging logic
0608 and once the counter drops out of considerable bounds, take
0609 appropriate action.
0610
0611 What: /sys/class/power/ds2760-battery.*/charge_full
0612 Date: May 2010
0613 KernelVersion: 2.6.35
0614 Contact: Daniel Mack <daniel@caiaq.de>
0615 Description:
0616 This file is writeable and can be used to set the assumed
0617 battery 'full level'. As batteries age, this value has to be
0618 amended over time.
0619
0620 What: /sys/class/power_supply/max14577-charger/device/fast_charge_timer
0621 Date: October 2014
0622 KernelVersion: 3.18.0
0623 Contact: Krzysztof Kozlowski <krzk@kernel.org>
0624 Description:
0625 This entry shows and sets the maximum time the max14577
0626 charger operates in fast-charge mode. When the timer expires
0627 the device will terminate fast-charge mode (charging current
0628 will drop to 0 A) and will trigger interrupt.
0629
0630 Valid values:
0631
0632 - 5, 6 or 7 (hours),
0633 - 0: disabled.
0634
0635 What: /sys/class/power_supply/max77693-charger/device/fast_charge_timer
0636 Date: January 2015
0637 KernelVersion: 3.19.0
0638 Contact: Krzysztof Kozlowski <krzk@kernel.org>
0639 Description:
0640 This entry shows and sets the maximum time the max77693
0641 charger operates in fast-charge mode. When the timer expires
0642 the device will terminate fast-charge mode (charging current
0643 will drop to 0 A) and will trigger interrupt.
0644
0645 Valid values:
0646
0647 - 4 - 16 (hours), step by 2 (rounded down)
0648 - 0: disabled.
0649
0650 What: /sys/class/power_supply/max77693-charger/device/top_off_threshold_current
0651 Date: January 2015
0652 KernelVersion: 3.19.0
0653 Contact: Krzysztof Kozlowski <krzk@kernel.org>
0654 Description:
0655 This entry shows and sets the charging current threshold for
0656 entering top-off charging mode. When charging current in fast
0657 charge mode drops below this value, the charger will trigger
0658 interrupt and start top-off charging mode.
0659
0660 Valid values:
0661
0662 - 100000 - 200000 (microamps), step by 25000 (rounded down)
0663 - 200000 - 350000 (microamps), step by 50000 (rounded down)
0664 - 0: disabled.
0665
0666 What: /sys/class/power_supply/max77693-charger/device/top_off_timer
0667 Date: January 2015
0668 KernelVersion: 3.19.0
0669 Contact: Krzysztof Kozlowski <krzk@kernel.org>
0670 Description:
0671 This entry shows and sets the maximum time the max77693
0672 charger operates in top-off charge mode. When the timer expires
0673 the device will terminate top-off charge mode (charging current
0674 will drop to 0 A) and will trigger interrupt.
0675
0676 Valid values:
0677
0678 - 0 - 70 (minutes), step by 10 (rounded down)
0679
0680 What: /sys/class/power_supply/bq24257-charger/ovp_voltage
0681 Date: October 2015
0682 KernelVersion: 4.4.0
0683 Contact: Andreas Dannenberg <dannenberg@ti.com>
0684 Description:
0685 This entry configures the overvoltage protection feature of bq24257-
0686 type charger devices. This feature protects the device and other
0687 components against damage from overvoltage on the input supply. See
0688 device datasheet for details.
0689
0690 Valid values:
0691
0692 - 6000000, 6500000, 7000000, 8000000, 9000000, 9500000, 10000000,
0693 10500000 (all uV)
0694
0695 What: /sys/class/power_supply/bq24257-charger/in_dpm_voltage
0696 Date: October 2015
0697 KernelVersion: 4.4.0
0698 Contact: Andreas Dannenberg <dannenberg@ti.com>
0699 Description:
0700 This entry configures the input dynamic power path management voltage of
0701 bq24257-type charger devices. Once the supply drops to the configured
0702 voltage, the input current limit is reduced down to prevent the further
0703 drop of the supply. When the IC enters this mode, the charge current is
0704 lower than the set value. See device datasheet for details.
0705
0706 Valid values:
0707
0708 - 4200000, 4280000, 4360000, 4440000, 4520000, 4600000, 4680000,
0709 4760000 (all uV)
0710
0711 What: /sys/class/power_supply/bq24257-charger/high_impedance_enable
0712 Date: October 2015
0713 KernelVersion: 4.4.0
0714 Contact: Andreas Dannenberg <dannenberg@ti.com>
0715 Description:
0716 This entry allows enabling the high-impedance mode of bq24257-type
0717 charger devices. If enabled, it places the charger IC into low power
0718 standby mode with the switch mode controller disabled. When disabled,
0719 the charger operates normally. See device datasheet for details.
0720
0721 Valid values:
0722
0723 - 1: enabled
0724 - 0: disabled
0725
0726 What: /sys/class/power_supply/bq24257-charger/sysoff_enable
0727 Date: October 2015
0728 KernelVersion: 4.4.0
0729 Contact: Andreas Dannenberg <dannenberg@ti.com>
0730 Description:
0731 This entry allows enabling the sysoff mode of bq24257-type charger
0732 devices. If enabled and the input is removed, the internal battery FET
0733 is turned off in order to reduce the leakage from the BAT pin to less
0734 than 1uA. Note that on some devices/systems this disconnects the battery
0735 from the system. See device datasheet for details.
0736
0737 Valid values:
0738
0739 - 1: enabled
0740 - 0: disabled
0741
0742 What: /sys/class/power_supply/<supply_name>/manufacture_year
0743 Date: January 2020
0744 Contact: linux-pm@vger.kernel.org
0745 Description:
0746 Reports the year (following Gregorian calendar) when the device has been
0747 manufactured.
0748
0749 Access: Read
0750
0751 Valid values: Reported as integer
0752
0753 What: /sys/class/power_supply/<supply_name>/manufacture_month
0754 Date: January 2020
0755 Contact: linux-pm@vger.kernel.org
0756 Description:
0757 Reports the month when the device has been manufactured.
0758
0759 Access: Read
0760
0761 Valid values: 1-12
0762
0763 What: /sys/class/power_supply/<supply_name>/manufacture_day
0764 Date: January 2020
0765 Contact: linux-pm@vger.kernel.org
0766 Description:
0767 Reports the day of month when the device has been manufactured.
0768
0769 Access: Read
0770 Valid values: 1-31
