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+* Real Time Clock for Renesas SH and ARM SoCs
+
+Required properties:
+- compatible: Should be "renesas,r7s72100-rtc" and "renesas,sh-rtc" as a
+  fallback.
+- reg: physical base address and length of memory mapped region.
+- interrupts: 3 interrupts for alarm, period, and carry.
+- interrupt-names: The interrupts should be labeled as "alarm", "period", and
+  "carry".
+- clocks: The functional clock source for the RTC controller must be listed
+  first (if exists). Additionally, potential clock counting sources are to be
+  listed.
+- clock-names: The functional clock must be labeled as "fck". Other clocks
+  may be named in accordance to the SoC hardware manuals.
+
+
+Example:
+rtc: rtc@fcff1000 {
+	compatible = "renesas,r7s72100-rtc", "renesas,sh-rtc";
+	reg = <0xfcff1000 0x2e>;
+	interrupts = <GIC_SPI 276 IRQ_TYPE_EDGE_RISING
+		      GIC_SPI 277 IRQ_TYPE_EDGE_RISING
+		      GIC_SPI 278 IRQ_TYPE_EDGE_RISING>;
+	interrupt-names = "alarm", "period", "carry";
+	clocks = <&mstp6_clks R7S72100_CLK_RTC>, <&rtc_x1_clk>,
+		 <&rtc_x3_clk>, <&extal_clk>;
+	clock-names = "fck", "rtc_x1", "rtc_x3", "extal";
+};