| NVIDIA Tegra 2 GPIO controller | |
| Required properties: | |
| - compatible : "nvidia,tegra20-gpio" | |
| - #gpio-cells : Should be two. The first cell is the pin number and the | |
| second cell is used to specify optional parameters: | |
| - bit 0 specifies polarity (0 for normal, 1 for inverted) | |
| - gpio-controller : Marks the device node as a GPIO controller. |