Add devicetree source files as of Linux-3.15-rc2

This adds the Linux dts files to barebox. The dts files are
generated from Ian Campbells device-tree-rebasing.git:

git://xenbits.xen.org/people/ianc/device-tree-rebasing.git

The dts are found in dts/ in the barebox repository and
will be updated from upstream regularly, probably for each upstream
-rc.

To keep the synchronization with upstream easy no changes to
the original files are allowed under dts/. Instead changes to
upstream dts files will be done using overlays in arch/$ARCH/dts/.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 23 insertions, 0 deletions

diff --git a/dts/Bindings/watchdog/of-xilinx-wdt.txt b/dts/Bindings/watchdog/of-xilinx-wdt.txt
new file mode 100644
index 0000000000..6d63782a73
--- /dev/null
+++ b/dts/Bindings/watchdog/of-xilinx-wdt.txt
@@ -0,0 +1,23 @@
+Xilinx AXI/PLB soft-core watchdog Device Tree Bindings
+---------------------------------------------------------
+
+Required properties:
+- compatible		: Should be "xlnx,xps-timebase-wdt-1.00.a" or
+			  "xlnx,xps-timebase-wdt-1.01.a".
+- reg			: Physical base address and size
+
+Optional properties:
+- clock-frequency	: Frequency of clock in Hz
+- xlnx,wdt-enable-once	: 0 - Watchdog can be restarted
+			  1 - Watchdog can be enabled just once
+- xlnx,wdt-interval	: Watchdog timeout interval in 2^<val> clock cycles,
+			  <val> is integer from 8 to 31.
+
+Example:
+axi-timebase-wdt@40100000 {
+	clock-frequency = <50000000>;
+	compatible = "xlnx,xps-timebase-wdt-1.00.a";
+	reg = <0x40100000 0x10000>;
+	xlnx,wdt-enable-once = <0x0>;
+	xlnx,wdt-interval = <0x1b>;
+} ;