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Diffstat (limited to 'Documentation/devicetree/bindings/power/supply/max17040_battery.txt')
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diff --git a/Documentation/devicetree/bindings/power/supply/max17040_battery.txt b/Documentation/devicetree/bindings/power/supply/max17040_battery.txt new file mode 100644 index 000000000..c802f664b --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/max17040_battery.txt @@ -0,0 +1,52 @@ +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; + }; |