dt: Move device tree documentation out of powerpc directory

The device tree is used by more than just PowerPC.  Make the documentation
directory available to all.

v2: reorganized files while moving to create arch and driver specific
    directories.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/powerpc/fsl/diu.txt b/Documentation/devicetree/bindings/powerpc/fsl/diu.txt
new file mode 100644
index 0000000..b66cb6d
--- /dev/null
+++ b/Documentation/devicetree/bindings/powerpc/fsl/diu.txt
@@ -0,0 +1,34 @@
+* Freescale Display Interface Unit
+
+The Freescale DIU is a LCD controller, with proper hardware, it can also
+drive DVI monitors.
+
+Required properties:
+- compatible : should be "fsl,diu" or "fsl,mpc5121-diu".
+- reg : should contain at least address and length of the DIU register
+  set.
+- interrupts : one DIU interrupt should be described here.
+- interrupt-parent : the phandle for the interrupt controller that
+  services interrupts for this device.
+
+Optional properties:
+- edid : verbatim EDID data block describing attached display.
+  Data from the detailed timing descriptor will be used to
+  program the display controller.
+
+Example (MPC8610HPCD):
+	display@2c000 {
+		compatible = "fsl,diu";
+		reg = <0x2c000 100>;
+		interrupts = <72 2>;
+		interrupt-parent = <&mpic>;
+	};
+
+Example for MPC5121:
+	display@2100 {
+		compatible = "fsl,mpc5121-diu";
+		reg = <0x2100 0x100>;
+		interrupts = <64 0x8>;
+		interrupt-parent = <&ipic>;
+		edid = [edid-data];
+	};