18c2ecf20Sopenharmony_ci* Dallas DS1390 SPI Serial Real-Time Clock 28c2ecf20Sopenharmony_ci 38c2ecf20Sopenharmony_ciRequired properties: 48c2ecf20Sopenharmony_ci- compatible: Should contain "dallas,ds1390". 58c2ecf20Sopenharmony_ci- reg: SPI address for chip 68c2ecf20Sopenharmony_ci 78c2ecf20Sopenharmony_ciOptional properties: 88c2ecf20Sopenharmony_ci- trickle-resistor-ohms : Selected resistor for trickle charger 98c2ecf20Sopenharmony_ci Values usable for ds1390 are 250, 2000, 4000 108c2ecf20Sopenharmony_ci Should be given if trickle charger should be enabled 118c2ecf20Sopenharmony_ci- trickle-diode-disable : Do not use internal trickle charger diode 128c2ecf20Sopenharmony_ci Should be given if internal trickle charger diode should be disabled 138c2ecf20Sopenharmony_ciExample: 148c2ecf20Sopenharmony_ci ds1390: rtc@0 { 158c2ecf20Sopenharmony_ci compatible = "dallas,ds1390"; 168c2ecf20Sopenharmony_ci trickle-resistor-ohms = <250>; 178c2ecf20Sopenharmony_ci reg = <0>; 188c2ecf20Sopenharmony_ci }; 19