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/openbmc/linux/Documentation/ABI/testing/ |
H A D | sysfs-bus-i2c-devices-bq32k | 4c466872 Fri Jan 27 11:43:46 CST 2017 Enric Balletbo i Serra <enric.balletbo@collabora.com> rtc: bq32000: add support to enable disable the trickle charge FET bypass
The bq32000 includes a trickle charge circuit to maintain the charge of the backup supply when a super capacitor is used.
You can enable the charging circuit by setting 'trickle-resistor-ohms', additionally you can set TCFE to 1 to bypass the internal diode and boost the charge voltage of the backup supply. You might want to enable/disable the TCFE switch from userspace (e.g when device is only connected to a battery)
This patch introduces a new sysfs entry to enable and disable this FET form userspace.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> 4c466872 Fri Jan 27 11:43:46 CST 2017 Enric Balletbo i Serra <enric.balletbo@collabora.com> rtc: bq32000: add support to enable disable the trickle charge FET bypass The bq32000 includes a trickle charge circuit to maintain the charge of the backup supply when a super capacitor is used. You can enable the charging circuit by setting 'trickle-resistor-ohms', additionally you can set TCFE to 1 to bypass the internal diode and boost the charge voltage of the backup supply. You might want to enable/disable the TCFE switch from userspace (e.g when device is only connected to a battery) This patch introduces a new sysfs entry to enable and disable this FET form userspace. Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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/openbmc/linux/drivers/rtc/ |
H A D | rtc-bq32k.c | 4c466872 Fri Jan 27 11:43:46 CST 2017 Enric Balletbo i Serra <enric.balletbo@collabora.com> rtc: bq32000: add support to enable disable the trickle charge FET bypass
The bq32000 includes a trickle charge circuit to maintain the charge of the backup supply when a super capacitor is used.
You can enable the charging circuit by setting 'trickle-resistor-ohms', additionally you can set TCFE to 1 to bypass the internal diode and boost the charge voltage of the backup supply. You might want to enable/disable the TCFE switch from userspace (e.g when device is only connected to a battery)
This patch introduces a new sysfs entry to enable and disable this FET form userspace.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> 4c466872 Fri Jan 27 11:43:46 CST 2017 Enric Balletbo i Serra <enric.balletbo@collabora.com> rtc: bq32000: add support to enable disable the trickle charge FET bypass The bq32000 includes a trickle charge circuit to maintain the charge of the backup supply when a super capacitor is used. You can enable the charging circuit by setting 'trickle-resistor-ohms', additionally you can set TCFE to 1 to bypass the internal diode and boost the charge voltage of the backup supply. You might want to enable/disable the TCFE switch from userspace (e.g when device is only connected to a battery) This patch introduces a new sysfs entry to enable and disable this FET form userspace. Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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