1 What: /sys/class/power/ds2760-battery.*/charge_now
4 Contact: Daniel Mack <daniel@caiaq.de>
6 This file is writeable and can be used to set the current
7 coloumb counter value inside the battery monitor chip. This
8 is needed for unavoidable corrections of aging batteries.
9 A userspace daemon can monitor the battery charging logic
10 and once the counter drops out of considerable bounds, take
13 What: /sys/class/power/ds2760-battery.*/charge_full
16 Contact: Daniel Mack <daniel@caiaq.de>
18 This file is writeable and can be used to set the assumed
19 battery 'full level'. As batteries age, this value has to be
22 What: /sys/class/power_supply/max14577-charger/device/fast_charge_timer
25 Contact: Krzysztof Kozlowski <k.kozlowski@samsung.com>
27 This entry shows and sets the maximum time the max14577
28 charger operates in fast-charge mode. When the timer expires
29 the device will terminate fast-charge mode (charging current
30 will drop to 0 A) and will trigger interrupt.
36 What: /sys/class/power_supply/max77693-charger/device/fast_charge_timer
39 Contact: Krzysztof Kozlowski <k.kozlowski@samsung.com>
41 This entry shows and sets the maximum time the max77693
42 charger operates in fast-charge mode. When the timer expires
43 the device will terminate fast-charge mode (charging current
44 will drop to 0 A) and will trigger interrupt.
47 - 4 - 16 (hours), step by 2 (rounded down)
50 What: /sys/class/power_supply/max77693-charger/device/top_off_threshold_current
53 Contact: Krzysztof Kozlowski <k.kozlowski@samsung.com>
55 This entry shows and sets the charging current threshold for
56 entering top-off charging mode. When charging current in fast
57 charge mode drops below this value, the charger will trigger
58 interrupt and start top-off charging mode.
61 - 100000 - 200000 (microamps), step by 25000 (rounded down)
62 - 200000 - 350000 (microamps), step by 50000 (rounded down)
65 What: /sys/class/power_supply/max77693-charger/device/top_off_timer
68 Contact: Krzysztof Kozlowski <k.kozlowski@samsung.com>
70 This entry shows and sets the maximum time the max77693
71 charger operates in top-off charge mode. When the timer expires
72 the device will terminate top-off charge mode (charging current
73 will drop to 0 A) and will trigger interrupt.
76 - 0 - 70 (minutes), step by 10 (rounded down)
78 What: /sys/class/power_supply/bq24257-charger/ovp_voltage
81 Contact: Andreas Dannenberg <dannenberg@ti.com>
83 This entry configures the overvoltage protection feature of bq24257-
84 type charger devices. This feature protects the device and other
85 components against damage from overvoltage on the input supply. See
86 device datasheet for details.
89 - 6000000, 6500000, 7000000, 8000000, 9000000, 9500000, 10000000,
92 What: /sys/class/power_supply/bq24257-charger/in_dpm_voltage
95 Contact: Andreas Dannenberg <dannenberg@ti.com>
97 This entry configures the input dynamic power path management voltage of
98 bq24257-type charger devices. Once the supply drops to the configured
99 voltage, the input current limit is reduced down to prevent the further
100 drop of the supply. When the IC enters this mode, the charge current is
101 lower than the set value. See device datasheet for details.
104 - 4200000, 4280000, 4360000, 4440000, 4520000, 4600000, 4680000,
107 What: /sys/class/power_supply/bq24257-charger/high_impedance_enable
110 Contact: Andreas Dannenberg <dannenberg@ti.com>
112 This entry allows enabling the high-impedance mode of bq24257-type
113 charger devices. If enabled, it places the charger IC into low power
114 standby mode with the switch mode controller disabled. When disabled,
115 the charger operates normally. See device datasheet for details.
121 What: /sys/class/power_supply/bq24257-charger/sysoff_enable
124 Contact: Andreas Dannenberg <dannenberg@ti.com>
126 This entry allows enabling the sysoff mode of bq24257-type charger
127 devices. If enabled and the input is removed, the internal battery FET
128 is turned off in order to reduce the leakage from the BAT pin to less
129 than 1uA. Note that on some devices/systems this disconnects the battery
130 from the system. See device datasheet for details.