| What: /sys/class/power/ds2760-battery.*/charge_now |
| Date: May 2010 |
| KernelVersion: 2.6.35 |
| Contact: Daniel Mack <daniel@caiaq.de> |
| Description: |
| This file is writeable and can be used to set the current |
| coloumb counter value inside the battery monitor chip. This |
| is needed for unavoidable corrections of aging batteries. |
| A userspace daemon can monitor the battery charging logic |
| and once the counter drops out of considerable bounds, take |
| appropriate action. |
| |
| What: /sys/class/power/ds2760-battery.*/charge_full |
| Date: May 2010 |
| KernelVersion: 2.6.35 |
| Contact: Daniel Mack <daniel@caiaq.de> |
| 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 |