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authorRajanikanth H.V <rajanikanth.hv@stericsson.com>2012-11-19 06:45:41 +0400
committerAnton Vorontsov <anton.vorontsov@linaro.org>2012-11-19 07:37:04 +0400
commite0f1abeba5c2d8a2183566717d99294fd1a29c2e (patch)
treebf4b3582791d3e4baa298f4268cf2bbad8169b74 /Documentation/devicetree/bindings/power_supply
parente9f14c18b83ccf3ab291b83a1d6c640113ecf545 (diff)
downloadlinux-e0f1abeba5c2d8a2183566717d99294fd1a29c2e.tar.xz
ab8500: Add devicetree support for fuelgauge
- This patch adds device tree support for fuelgauge driver - optimize bm devices platform_data usage and of_probe(...) Note: of_probe() routine for battery managed devices is made common across all bm drivers. - test status: - interrupt numbers assigned differs between legacy and FDT mode. Signed-off-by: Rajanikanth H.V <rajanikanth.hv@stericsson.com> Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/power_supply')
-rw-r--r--Documentation/devicetree/bindings/power_supply/ab8500/fg.txt58
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diff --git a/Documentation/devicetree/bindings/power_supply/ab8500/fg.txt b/Documentation/devicetree/bindings/power_supply/ab8500/fg.txt
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+=== AB8500 Fuel Gauge Driver ===
+
+AB8500 is a mixed signal multimedia and power management
+device comprising: power and energy-management-module,
+wall-charger, usb-charger, audio codec, general purpose adc,
+tvout, clock management and sim card interface.
+
+Fuelgauge support is part of energy-management-modules, other
+components of this module are:
+main-charger, usb-combo-charger and battery-temperature-monitoring.
+
+The properties below describes the node for fuelgauge driver.
+
+Required Properties:
+- compatible = This shall be: "stericsson,ab8500-fg"
+- battery = Shall be battery specific information
+ Example:
+ ab8500_fg {
+ compatible = "stericsson,ab8500-fg";
+ battery = <&ab8500_battery>;
+ };
+
+dependent node:
+ ab8500_battery: ab8500_battery {
+ };
+ This node will provide information on 'thermistor interface' and
+ 'battery technology type' used.
+
+Properties of this node are:
+thermistor-on-batctrl:
+ A boolean value indicating thermistor interface to battery
+
+ Note:
+ 'btemp' and 'batctrl' are the pins interfaced for battery temperature
+ measurement, 'btemp' signal is used when NTC(negative temperature
+ coefficient) resister is interfaced external to battery whereas
+ 'batctrl' pin is used when NTC resister is internal to battery.
+
+ Example:
+ ab8500_battery: ab8500_battery {
+ thermistor-on-batctrl;
+ };
+ indicates: NTC resister is internal to battery, 'batctrl' is used
+ for thermal measurement.
+
+ The absence of property 'thermal-on-batctrl' indicates
+ NTC resister is external to battery and 'btemp' signal is used
+ for thermal measurement.
+
+battery-type:
+ This shall be the battery manufacturing technology type,
+ allowed types are:
+ "UNKNOWN" "NiMH" "LION" "LIPO" "LiFe" "NiCd" "LiMn"
+ Example:
+ ab8500_battery: ab8500_battery {
+ stericsson,battery-type = "LIPO";
+ }
+