Cadence Real Time Clock The Cadence RTC controller with date, time and alarm capabilities. The alarm may wake the system from low-power state. Required properties: - compatible: Should be "cdns,rtc-r109v3" - reg: Specifies base physical address and size of the register area. - interrupts: A single interrupt specifier. - clocks: Must contain two entries: - pclk: APB registers clock - ref_clk: reference 1Hz or 100Hz clock, depending on IP configuration See ../clocks/clock-bindings.txt for details. Example: rtc0: rtc@fd080000 { compatible = "cdns,rtc-r109v3"; reg = <0xfd080000 0x1000>; clock-names = "pclk", "ref_clk"; clocks = <&sysclock>, <&refclock>; interrupt-parent = <&gic>; interrupts = <0 6 IRQ_TYPE_LEVEL_HIGH>; };