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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>
8 lines
339 B
Plaintext
8 lines
339 B
Plaintext
What: /sys/bus/i2c/devices/.../trickle_charge_bypass
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Date: Jan 2017
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KernelVersion: 4.11
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Contact: Enric Balletbo i Serra <eballetbo@gmail.com>
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Description: Attribute for enable/disable the trickle charge bypass
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The trickle_charge_bypass attribute allows the userspace to
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enable/disable the Trickle charge FET bypass.
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