[PATCH v2 5/6] dt-binding: document the binding for mxc rtc

[Philippe Reynes <tremyfr-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

This adds documentation of device tree bindings for the
mxc rtc.

Cc: Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>
Cc: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>
Cc: Ian Campbell <ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>
Cc: Kumar Gala <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Signed-off-by: Philippe Reynes <tremyfr-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 Documentation/devicetree/bindings/rtc/rtc-mxc.txt |   27 +++++++++++++++++++++
 1 files changed, 27 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/rtc/rtc-mxc.txt

diff --git a/Documentation/devicetree/bindings/rtc/rtc-mxc.txt b/Documentation/devicetree/bindings/rtc/rtc-mxc.txt
new file mode 100644
index 0000000..5505493
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/rtc-mxc.txt
@@ -0,0 +1,27 @@
+* Real Time Clock of the i.MX SoCs
+
+RTC controller for the i.MX SoCs
+
+Required properties:
+- compatible: Should be "fsl,imx1-rtc" or "fsl,imx21-rtc".
+- reg: physical base address of the controller and length of memory mapped
+  region.
+- interrupts: IRQ line for the RTC.
+- clocks: should contain two entries:
+  * one for the input reference
+  * one for the the SoC RTC
+- clock-names: should contain:
+  * "rtc" for the input reference clock
+  * "ipg" for the SoC RTC clock
+
+Example:
+
+rtc@10007000 {
+	compatible = "fsl,imx21-rtc";
+	reg = <0x10007000 0x1000>;
+	interrupts = <22>;
+	clocks = <&clks IMX27_CLK_CKIL>,
+	       	 <&clks IMX27_CLK_RTC_IPG_GATE>;
+	clock-names = "rtc, "ipg";
+	status = "disabled";
+};
-- 
1.7.4.4

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