18c2ecf20Sopenharmony_ciCadence Real Time Clock 28c2ecf20Sopenharmony_ci 38c2ecf20Sopenharmony_ciThe Cadence RTC controller with date, time and alarm capabilities. 48c2ecf20Sopenharmony_ciThe alarm may wake the system from low-power state. 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ciRequired properties: 78c2ecf20Sopenharmony_ci- compatible: Should be "cdns,rtc-r109v3" 88c2ecf20Sopenharmony_ci- reg: Specifies base physical address and size of the register area. 98c2ecf20Sopenharmony_ci- interrupts: A single interrupt specifier. 108c2ecf20Sopenharmony_ci- clocks: Must contain two entries: 118c2ecf20Sopenharmony_ci - pclk: APB registers clock 128c2ecf20Sopenharmony_ci - ref_clk: reference 1Hz or 100Hz clock, depending on IP configuration 138c2ecf20Sopenharmony_ci See ../clocks/clock-bindings.txt for details. 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ciExample: 168c2ecf20Sopenharmony_ci rtc0: rtc@fd080000 { 178c2ecf20Sopenharmony_ci compatible = "cdns,rtc-r109v3"; 188c2ecf20Sopenharmony_ci reg = <0xfd080000 0x1000>; 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_ci clock-names = "pclk", "ref_clk"; 218c2ecf20Sopenharmony_ci clocks = <&sysclock>, <&refclock>; 228c2ecf20Sopenharmony_ci 238c2ecf20Sopenharmony_ci interrupt-parent = <&gic>; 248c2ecf20Sopenharmony_ci interrupts = <0 6 IRQ_TYPE_LEVEL_HIGH>; 258c2ecf20Sopenharmony_ci }; 26