Tegra DRM device tree bindings

[Stephen Warren]

On 06/26/2012 07:46 PM, Mark Zhang wrote:
>>> On Tue, 26 Jun 2012 12:55:13 +0200
>>> Thierry Reding <thierry.reding at avionic-design.de> wrote:
...
>> I'm not sure I understand how information about the carveout would be
>> obtained from the IOMMU API, though.
> 
> I think that can be similar with current gart implementation. Define carveout as: 
> 
> carveout {
>         compatible = "nvidia,tegra20-carveout";
>         size = <0x10000000>;
> };
> 
> Then create a file such like "tegra-carveout.c" to get these definitions and register itself as platform device's iommu instance.

The carveout isn't a HW object, so it doesn't seem appropriate to define
a DT node to represent it.