linux/Documentation/devicetree/bindings/rtc/stmp3xxx-rtc.txt
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   1* STMP3xxx/i.MX28 Time Clock controller
   2
   3Required properties:
   4- compatible: should be one of the following.
   5    * "fsl,stmp3xxx-rtc"
   6- reg: physical base address of the controller and length of memory mapped
   7  region.
   8- interrupts: rtc alarm interrupt
   9
  10Example:
  11
  12rtc@80056000 {
  13        compatible = "fsl,imx28-rtc", "fsl,stmp3xxx-rtc";
  14        reg = <0x80056000 2000>;
  15        interrupts = <29>;
  16};
  17