rtc: omap: dt support

Enhance rtc-omap driver with DT capability

Signed-off-by: Afzal Mohammed <[email protected]>
Acked-by: Sekhar Nori <[email protected]>
Cc: Grant Likely <[email protected]>
Cc: Sekhar Nori <[email protected]>
Cc: Kevin Hilman <[email protected]>
Cc: Russell King <[email protected]>
Cc: Alessandro Zummo <[email protected]>
Cc: Daniel Mack <[email protected]>
Cc: Vaibhav Hiremath <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Documentation/devicetree/bindings/rtc/rtc-omap.txt

@@ -0,0 +1,17 @@
+TI Real Time Clock
+
+Required properties:
+- compatible: "ti,da830-rtc"
+- reg: Address range of rtc register set
+- interrupts: rtc timer, alarm interrupts in order
+- interrupt-parent: phandle for the interrupt controller
+
+Example:
+
+rtc@1c23000 {
+	compatible = "ti,da830-rtc";
+	reg = <0x23000 0x1000>;
+	interrupts = <19
+		      19>;
+	interrupt-parent = <&intc>;
+};