linux/Documentation/devicetree/bindings/rtc/imxdi-rtc.txt
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Prefs
   1* i.MX25 Real Time Clock controller
   2
   3This binding supports the following chips: i.MX25, i.MX53
   4
   5Required properties:
   6- compatible: should be: "fsl,imx25-rtc"
   7- reg: physical base address of the controller and length of memory mapped
   8  region.
   9- interrupts: rtc alarm interrupt
  10
  11Example:
  12
  13rtc@80056000 {
  14        compatible = "fsl,imx53-rtc", "fsl,imx25-rtc";
  15        reg = <0x80056000 2000>;
  16        interrupts = <29>;
  17};
  18