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, 45 insertions, 0 deletions

diff --git a/dts/Bindings/dma/moxa,moxart-dma.txt b/dts/Bindings/dma/moxa,moxart-dma.txt
new file mode 100644
index 0000000000..8a9f355933
--- /dev/null
+++ b/dts/Bindings/dma/moxa,moxart-dma.txt
@@ -0,0 +1,45 @@
+MOXA ART DMA Controller
+
+See dma.txt first
+
+Required properties:
+
+- compatible :	Must be "moxa,moxart-dma"
+- reg :		Should contain registers location and length
+- interrupts :	Should contain an interrupt-specifier for the sole
+		interrupt generated by the device
+- #dma-cells :	Should be 1, a single cell holding a line request number
+
+Example:
+
+	dma: dma@90500000 {
+		compatible = "moxa,moxart-dma";
+		reg = <0x90500080 0x40>;
+		interrupts = <24 0>;
+		#dma-cells = <1>;
+	};
+
+
+Clients:
+
+DMA clients connected to the MOXA ART DMA controller must use the format
+described in the dma.txt file, using a two-cell specifier for each channel:
+a phandle plus one integer cells.
+The two cells in order are:
+
+1. A phandle pointing to the DMA controller.
+2. Peripheral identifier for the hardware handshaking interface.
+
+Example:
+Use specific request line passing from dma
+For example, MMC request line is 5
+
+	sdhci: sdhci@98e00000 {
+		compatible = "moxa,moxart-sdhci";
+		reg = <0x98e00000 0x5C>;
+		interrupts = <5 0>;
+		clocks = <&clk_apb>;
+		dmas =  <&dma 5>,
+			<&dma 5>;
+		dma-names = "tx", "rx";
+	};