Required properties:
- compatible: should be one of the following.
* "samsung,s3c2410-rtc" - for controllers compatible with s3c2410 rtc.
+ * "samsung,s3c2416-rtc" - for controllers compatible with s3c2416 rtc.
+ * "samsung,s3c2443-rtc" - for controllers compatible with s3c2443 rtc.
* "samsung,s3c6410-rtc" - for controllers compatible with s3c6410 rtc.
+ * "samsung,exynos3250-rtc" - for controllers compatible with exynos3250 rtc.
- reg: physical base address of the controller and length of memory mapped
region.
- interrupts: Two interrupt numbers to the cpu should be specified. First