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, 25 insertions, 0 deletions

diff --git a/dts/Bindings/i2c/i2c-mxs.txt b/dts/Bindings/i2c/i2c-mxs.txt
new file mode 100644
index 0000000000..4e1c8ac01e
--- /dev/null
+++ b/dts/Bindings/i2c/i2c-mxs.txt
@@ -0,0 +1,25 @@
+* Freescale MXS Inter IC (I2C) Controller
+
+Required properties:
+- compatible: Should be "fsl,<chip>-i2c"
+- reg: Should contain registers location and length
+- interrupts: Should contain ERROR interrupt number
+- clock-frequency: Desired I2C bus clock frequency in Hz.
+                   Only 100000Hz and 400000Hz modes are supported.
+- dmas: DMA specifier, consisting of a phandle to DMA controller node
+  and I2C DMA channel ID.
+  Refer to dma.txt and fsl-mxs-dma.txt for details.
+- dma-names: Must be "rx-tx".
+
+Examples:
+
+i2c0: i2c@80058000 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	compatible = "fsl,imx28-i2c";
+	reg = <0x80058000 2000>;
+	interrupts = <111>;
+	clock-frequency = <100000>;
+	dmas = <&dma_apbx 6>;
+	dma-names = "rx-tx";
+};