2015-07-30 08:11:24 +08:00
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What: /sys/class/power_supply/twl4030_ac/max_current
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/sys/class/power_supply/twl4030_usb/max_current
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Description:
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Read/Write limit on current which may
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be drawn from the ac (Accessory Charger) or
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USB port.
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Value is in micro-Amps.
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Value is set automatically to an appropriate
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value when a cable is plugged or unplugged.
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Value can the set by writing to the attribute.
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The change will only persist until the next
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plug event. These event are reported via udev.
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2015-07-30 08:11:24 +08:00
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What: /sys/class/power_supply/twl4030_usb/mode
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Description:
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Changing mode for USB port.
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Writing to this can disable charging.
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Possible values are:
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"auto" - draw power as appropriate for detected
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power source and battery status.
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"off" - do not draw any power.
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2015-07-30 08:11:24 +08:00
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"continuous"
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- activate mode described as "linear" in
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TWL data sheets. This uses whatever
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current is available and doesn't switch off
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when voltage drops.
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This is useful for unstable power sources
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such as bicycle dynamo, but care should
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be taken that battery is not over-charged.
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