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, 27 insertions, 0 deletions

diff --git a/dts/Bindings/input/twl4030-keypad.txt b/dts/Bindings/input/twl4030-keypad.txt
new file mode 100644
index 0000000000..e4be2f76a7
--- /dev/null
+++ b/dts/Bindings/input/twl4030-keypad.txt
@@ -0,0 +1,27 @@
+* TWL4030's Keypad Controller device tree bindings
+
+TWL4030's Keypad controller is used to interface a SoC with a matrix-type
+keypad device. The keypad controller supports multiple row and column lines.
+A key can be placed at each intersection of a unique row and a unique column.
+The keypad controller can sense a key-press and key-release and report the
+event using a interrupt to the cpu.
+
+This binding is based on the matrix-keymap binding with the following
+changes:
+
+ * keypad,num-rows and keypad,num-columns are required.
+
+Required SoC Specific Properties:
+- compatible: should be one of the following
+   - "ti,twl4030-keypad": For controllers compatible with twl4030 keypad
+      controller.
+- interrupt: should be one of the following
+   - <1>: For controllers compatible with twl4030 keypad controller.
+
+Example:
+	twl_keypad: keypad {
+		compatible = "ti,twl4030-keypad";
+		interrupts = <1>;
+		keypad,num-rows = <8>;
+		keypad,num-columns = <8>;
+	};