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max17040_battery
~~~~~~~~~~~~~~~~
Required properties :
- compatible : "maxim,max17040", "maxim,max17041", "maxim,max17043",
"maxim,max17044", "maxim,max17048", "maxim,max17049",
"maxim,max17058", "maxim,max17059" or "maxim,max77836-battery"
- reg: i2c slave address
Optional properties :
- maxim,alert-low-soc-level : The alert threshold that sets the state of
charge level (%) where an interrupt is
generated. Can be configured from 1 up to 32
(%). If skipped the power up default value of
4 (%) will be used.
- maxim,double-soc : Certain devices return double the capacity.
Specify this boolean property to divide the
reported value in 2 and thus normalize it.
SOC == State of Charge == Capacity.
- maxim,rcomp : A value to compensate readings for various
battery chemistries and operating temperatures.
max17040,41 have 2 byte rcomp, default to
0x97 0x00. All other devices have one byte
rcomp, default to 0x97.
- interrupts : Interrupt line see Documentation/devicetree/
bindings/interrupt-controller/interrupts.txt
- wakeup-source : This device has wakeup capabilities. Use this
property to use alert low SOC level interrupt
as wake up source.
Optional properties support interrupt functionality for alert low state of
charge level, present in some ICs in the same family, and should be used with
compatible "maxim,max77836-battery".
Example:
battery-fuel-gauge@36 {
compatible = "maxim,max77836-battery";
reg = <0x36>;
maxim,alert-low-soc-level = <10>;
interrupt-parent = <&gpio7>;
interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
wakeup-source;
};
battery-fuel-gauge@36 {
compatible = "maxim,max17048";
reg = <0x36>;
maxim,rcomp = /bits/ 8 <0x56>;
maxim,alert-low-soc-level = <10>;
maxim,double-soc;
};
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