mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-06 01:36:41 +07:00
6169588f69
Document the settings exported by bq24257 charger driver through sysfs entries: - ovp_voltage - in_dpm_voltage - high_impedance_enable - sysoff_enable Signed-off-by: Andreas Dannenberg <dannenberg@ti.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
135 lines
4.9 KiB
Plaintext
135 lines
4.9 KiB
Plaintext
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 <k.kozlowski@samsung.com>
|
|
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 <k.kozlowski@samsung.com>
|
|
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 <k.kozlowski@samsung.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:
|
|
- 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 <k.kozlowski@samsung.com>
|
|
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
|