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1* Dallas DS1390 SPI Serial Real-Time Clock2 3Required properties:4- compatible: Should contain "dallas,ds1390".5- reg: SPI address for chip6 7Optional properties:8- trickle-resistor-ohms : Selected resistor for trickle charger9 Values usable for ds1390 are 250, 2000, 400010 Should be given if trickle charger should be enabled11- trickle-diode-disable : Do not use internal trickle charger diode12 Should be given if internal trickle charger diode should be disabled13Example:14 ds1390: rtc@0 {15 compatible = "dallas,ds1390";16 trickle-resistor-ohms = <250>;17 reg = <0>;18 };19