linux/Documentation/devicetree/bindings/rtc/orion-rtc.txt
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Prefs
   1* Mvebu Real Time Clock
   2
   3RTC controller for the Kirkwood, the Dove, the Armada 370 and the
   4Armada XP SoCs
   5
   6Required properties:
   7- compatible : Should be "marvell,orion-rtc"
   8- reg: physical base address of the controller and length of memory mapped
   9  region.
  10- interrupts: IRQ line for the RTC.
  11
  12Example:
  13
  14rtc@10300 {
  15        compatible = "marvell,orion-rtc";
  16        reg = <0xd0010300 0x20>;
  17        interrupts = <50>;
  18};
  19