Device tree bindings for the EMC tables on tegra.

Signed-off-by: Olof Johansson <redacted>
Cc: Rob Herring <redacted>
Cc: devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org
---
 .../devicetree/bindings/arm/tegra/emc.txt          |  100 ++++++++++++++++++++
 arch/arm/boot/dts/tegra20.dtsi                     |    7 ++
 2 files changed, 107 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/arm/tegra/emc.txt

diff --git a/Documentation/devicetree/bindings/arm/tegra/emc.txt b/Documentation/devicetree/bindings/arm/tegra/emc.txt
new file mode 100644
index 0000000..09335f8
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/tegra/emc.txt

@@ -0,0 +1,100 @@
+Embedded Memory Controller
+
+Properties:
+- name : Should be emc
+- #address-cells : Should be 1
+- #size-cells : Should be 0
+- compatible : Should contain "nvidia,tegra20-emc".
+- reg : Offset and length of the register set for the device
+- nvidia,use-ram-code : If present, the sub-nodes will be addressed
+  and chosen using the ramcode board selector. If omitted, only one
+  set of tables can be present and said tables will be used
+  irrespective of ram-code configuration.
+
+Child device nodes describe the memory settings for different configurations and clock rates.
+
+Example:
+
+       emc@7000f400 {
+               #address-cells = < 1 >;
+               #size-cells = < 0 >;
+               compatible = "nvidia,tegra20-emc";
+               reg = <0x7000f4000 0x200>;