of: Add NVIDIA Tegra flow controller bindings

Add device tree bindings for the flow controller found on NVIDIA Tegra
SoCs.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

diff --git a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-flowctrl.txt b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-flowctrl.txt
new file mode 100644 (file)
index 0000000..ccf0add
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-flowctrl.txt
@@ -0,0 +1,12 @@
+NVIDIA Tegra Flow Controller
+
+Required properties:
+- compatible: Should be "nvidia,tegra<chip>-flowctrl"
+- reg: Should contain one register range (address and length)
+
+Example:
+
+       flow-controller@60007000 {
+               compatible = "nvidia,tegra20-flowctrl";
+               reg = <0x60007000 0x1000>;
+       };