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