1 === AB8500 Fuel Gauge Driver ===
3 AB8500 is a mixed signal multimedia and power management
4 device comprising: power and energy-management-module,
5 wall-charger, usb-charger, audio codec, general purpose adc,
6 tvout, clock management and sim card interface.
8 Fuelgauge support is part of energy-management-modules, other
9 components of this module are:
10 main-charger, usb-combo-charger and battery-temperature-monitoring.
12 The properties below describes the node for fuelgauge driver.
15 - compatible = This shall be: "stericsson,ab8500-fg"
16 - battery = Shall be battery specific information
19 compatible = "stericsson,ab8500-fg";
20 battery = <&ab8500_battery>;
24 ab8500_battery: ab8500_battery {
26 This node will provide information on 'thermistor interface' and
27 'battery technology type' used.
29 Properties of this node are:
30 thermistor-on-batctrl:
31 A boolean value indicating thermistor interface to battery
34 'btemp' and 'batctrl' are the pins interfaced for battery temperature
35 measurement, 'btemp' signal is used when NTC(negative temperature
36 coefficient) resister is interfaced external to battery whereas
37 'batctrl' pin is used when NTC resister is internal to battery.
40 ab8500_battery: ab8500_battery {
41 thermistor-on-batctrl;
43 indicates: NTC resister is internal to battery, 'batctrl' is used
44 for thermal measurement.
46 The absence of property 'thermal-on-batctrl' indicates
47 NTC resister is external to battery and 'btemp' signal is used
48 for thermal measurement.
51 This shall be the battery manufacturing technology type,
53 "UNKNOWN" "NiMH" "LION" "LIPO" "LiFe" "NiCd" "LiMn"
55 ab8500_battery: ab8500_battery {
56 stericsson,battery-type = "LIPO";