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diff --git a/kernel/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-ahb.txt b/kernel/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-ahb.txt
new file mode 100644
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+++ b/kernel/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-ahb.txt
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+NVIDIA Tegra AHB
+
+Required properties:
+- compatible : For Tegra20, must contain "nvidia,tegra20-ahb".  For
+  Tegra30, must contain "nvidia,tegra30-ahb".  Otherwise, must contain
+  '"nvidia,<chip>-ahb", "nvidia,tegra30-ahb"' where <chip> is tegra124,
+  tegra132, or tegra210.
+- reg : Should contain 1 register ranges(address and length).  For
+  Tegra20, Tegra30, and Tegra114 chips, the value must be <0x6000c004
+  0x10c>.  For Tegra124, Tegra132 and Tegra210 chips, the value should
+  be be <0x6000c000 0x150>.
+
+Example (for a Tegra20 chip):
+	ahb: ahb@6000c004 {
+		compatible = "nvidia,tegra20-ahb";
+		reg = <0x6000c004 0x10c>; /* AHB Arbitration + Gizmo Controller */
+	};