diff options
| author |   Stephen Warren <swarren@nvidia.com> | 2012-01-04 08:39:34 +0000 |
|---|---|---|
| committer |   Olof Johansson <olof@lixom.net> | 2012-02-06 18:21:19 -0800 |
| commit | a38b84fce9d1f3b1f054409b6363d98bf019e263 (patch) | |
| tree | de18976725aec6c1d0559f047a9b306ae095c224 /Documentation/devicetree/bindings/gpio | |
| parent | ARM: tegra: seaboard: add EMC table to device tree (diff) | |
| download | linux-dev-a38b84fce9d1f3b1f054409b6363d98bf019e263.tar.xz linux-dev-a38b84fce9d1f3b1f054409b6363d98bf019e263.zip | |
dt: tegra gpio: Flesh out binding documentation
Document the required reg and interrupts properties.
Add a complete example.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'Documentation/devicetree/bindings/gpio')
| -rw-r--r-- | Documentation/devicetree/bindings/gpio/gpio_nvidia.txt | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt b/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt index eb4b530d64e1..50b363c5b884 100644 --- a/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt +++ b/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt @@ -2,7 +2,25 @@ NVIDIA Tegra 2 GPIO controller Required properties: - compatible : "nvidia,tegra20-gpio" +- reg : Physical base address and length of the controller's registers. +- interrupts : The interrupt outputs from the controller. - #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. + +Example: + +gpio: gpio@6000d000 { + compatible = "nvidia,tegra20-gpio"; + reg = < 0x6000d000 0x1000 >; + interrupts = < 0 32 0x04 + 0 33 0x04 + 0 34 0x04 + 0 35 0x04 + 0 55 0x04 + 0 87 0x04 + 0 89 0x04 >; + #gpio-cells = <2>; + gpio-controller; +}; |