2010-05-19 04:26:40 +08:00
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What: /sys/class/power/ds2760-battery.*/charge_now
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Date: May 2010
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KernelVersion: 2.6.35
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Contact: Daniel Mack <daniel@caiaq.de>
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Description:
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This file is writeable and can be used to set the current
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coloumb counter value inside the battery monitor chip. This
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is needed for unavoidable corrections of aging batteries.
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A userspace daemon can monitor the battery charging logic
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and once the counter drops out of considerable bounds, take
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appropriate action.
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What: /sys/class/power/ds2760-battery.*/charge_full
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Date: May 2010
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KernelVersion: 2.6.35
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Contact: Daniel Mack <daniel@caiaq.de>
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Description:
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This file is writeable and can be used to set the assumed
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battery 'full level'. As batteries age, this value has to be
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amended over time.
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2014-09-12 14:54:00 +08:00
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What: /sys/class/power_supply/max14577-charger/device/fast_charge_timer
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2014-10-02 20:12:34 +08:00
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Date: October 2014
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2014-09-12 14:54:00 +08:00
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KernelVersion: 3.18.0
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2016-08-17 20:07:43 +08:00
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Contact: Krzysztof Kozlowski <krzk@kernel.org>
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2014-09-12 14:54:00 +08:00
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Description:
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This entry shows and sets the maximum time the max14577
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charger operates in fast-charge mode. When the timer expires
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the device will terminate fast-charge mode (charging current
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will drop to 0 A) and will trigger interrupt.
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Valid values:
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- 5, 6 or 7 (hours),
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- 0: disabled.
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2015-01-20 18:00:55 +08:00
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What: /sys/class/power_supply/max77693-charger/device/fast_charge_timer
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Date: January 2015
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KernelVersion: 3.19.0
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2016-08-17 20:07:43 +08:00
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Contact: Krzysztof Kozlowski <krzk@kernel.org>
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2015-01-20 18:00:55 +08:00
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Description:
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This entry shows and sets the maximum time the max77693
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charger operates in fast-charge mode. When the timer expires
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the device will terminate fast-charge mode (charging current
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will drop to 0 A) and will trigger interrupt.
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Valid values:
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- 4 - 16 (hours), step by 2 (rounded down)
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- 0: disabled.
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What: /sys/class/power_supply/max77693-charger/device/top_off_threshold_current
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Date: January 2015
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KernelVersion: 3.19.0
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2016-08-17 20:07:43 +08:00
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Contact: Krzysztof Kozlowski <krzk@kernel.org>
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2015-01-20 18:00:55 +08:00
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Description:
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This entry shows and sets the charging current threshold for
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entering top-off charging mode. When charging current in fast
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charge mode drops below this value, the charger will trigger
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interrupt and start top-off charging mode.
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Valid values:
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- 100000 - 200000 (microamps), step by 25000 (rounded down)
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- 200000 - 350000 (microamps), step by 50000 (rounded down)
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- 0: disabled.
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What: /sys/class/power_supply/max77693-charger/device/top_off_timer
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Date: January 2015
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KernelVersion: 3.19.0
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2016-08-17 20:07:43 +08:00
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Contact: Krzysztof Kozlowski <krzk@kernel.org>
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2015-01-20 18:00:55 +08:00
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Description:
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This entry shows and sets the maximum time the max77693
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charger operates in top-off charge mode. When the timer expires
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the device will terminate top-off charge mode (charging current
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will drop to 0 A) and will trigger interrupt.
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Valid values:
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- 0 - 70 (minutes), step by 10 (rounded down)
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2015-09-29 06:34:02 +08:00
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What: /sys/class/power_supply/bq24257-charger/ovp_voltage
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Date: October 2015
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KernelVersion: 4.4.0
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Contact: Andreas Dannenberg <dannenberg@ti.com>
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Description:
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This entry configures the overvoltage protection feature of bq24257-
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type charger devices. This feature protects the device and other
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components against damage from overvoltage on the input supply. See
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device datasheet for details.
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Valid values:
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- 6000000, 6500000, 7000000, 8000000, 9000000, 9500000, 10000000,
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10500000 (all uV)
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What: /sys/class/power_supply/bq24257-charger/in_dpm_voltage
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Date: October 2015
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KernelVersion: 4.4.0
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Contact: Andreas Dannenberg <dannenberg@ti.com>
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Description:
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This entry configures the input dynamic power path management voltage of
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bq24257-type charger devices. Once the supply drops to the configured
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voltage, the input current limit is reduced down to prevent the further
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drop of the supply. When the IC enters this mode, the charge current is
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lower than the set value. See device datasheet for details.
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Valid values:
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- 4200000, 4280000, 4360000, 4440000, 4520000, 4600000, 4680000,
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4760000 (all uV)
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What: /sys/class/power_supply/bq24257-charger/high_impedance_enable
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Date: October 2015
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KernelVersion: 4.4.0
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Contact: Andreas Dannenberg <dannenberg@ti.com>
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Description:
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This entry allows enabling the high-impedance mode of bq24257-type
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charger devices. If enabled, it places the charger IC into low power
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standby mode with the switch mode controller disabled. When disabled,
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the charger operates normally. See device datasheet for details.
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Valid values:
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- 1: enabled
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- 0: disabled
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What: /sys/class/power_supply/bq24257-charger/sysoff_enable
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Date: October 2015
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KernelVersion: 4.4.0
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Contact: Andreas Dannenberg <dannenberg@ti.com>
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Description:
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This entry allows enabling the sysoff mode of bq24257-type charger
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devices. If enabled and the input is removed, the internal battery FET
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is turned off in order to reduce the leakage from the BAT pin to less
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than 1uA. Note that on some devices/systems this disconnects the battery
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from the system. See device datasheet for details.
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Valid values:
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- 1: enabled
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- 0: disabled
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