59 lines
1.8 KiB
Plaintext
59 lines
1.8 KiB
Plaintext
=== AB8500 Fuel Gauge Driver ===
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AB8500 is a mixed signal multimedia and power management
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device comprising: power and energy-management-module,
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wall-charger, usb-charger, audio codec, general purpose adc,
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tvout, clock management and sim card interface.
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Fuelgauge support is part of energy-management-modules, other
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components of this module are:
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main-charger, usb-combo-charger and battery-temperature-monitoring.
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The properties below describes the node for fuelgauge driver.
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Required Properties:
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- compatible = This shall be: "stericsson,ab8500-fg"
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- battery = Shall be battery specific information
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Example:
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ab8500_fg {
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compatible = "stericsson,ab8500-fg";
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battery = <&ab8500_battery>;
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};
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dependent node:
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ab8500_battery: ab8500_battery {
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};
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This node will provide information on 'thermistor interface' and
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'battery technology type' used.
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Properties of this node are:
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thermistor-on-batctrl:
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A boolean value indicating thermistor interface to battery
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Note:
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'btemp' and 'batctrl' are the pins interfaced for battery temperature
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measurement, 'btemp' signal is used when NTC(negative temperature
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coefficient) resister is interfaced external to battery whereas
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'batctrl' pin is used when NTC resister is internal to battery.
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Example:
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ab8500_battery: ab8500_battery {
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thermistor-on-batctrl;
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};
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indicates: NTC resister is internal to battery, 'batctrl' is used
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for thermal measurement.
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The absence of property 'thermal-on-batctrl' indicates
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NTC resister is external to battery and 'btemp' signal is used
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for thermal measurement.
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battery-type:
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This shall be the battery manufacturing technology type,
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allowed types are:
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"UNKNOWN" "NiMH" "LION" "LIPO" "LiFe" "NiCd" "LiMn"
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Example:
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ab8500_battery: ab8500_battery {
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stericsson,battery-type = "LIPO";
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}
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