diff options
| author | Stephen Warren <swarren@nvidia.com> | 2012-05-21 16:05:45 -0600 |
|---|---|---|
| committer | Stephen Warren <swarren@nvidia.com> | 2012-06-11 11:48:42 -0600 |
| commit | f3d549dd5b217d084c9fe6581e0430909440de2b (patch) | |
| tree | abc7b632477bd0d0c1fd5c5ab41ba2db02891ec0 /Documentation/devicetree/bindings/gpio/nvidia,tegra20-gpio.txt | |
| parent | 4c5ddd952ef1e534b45218cf4ad74b5496e6406c (diff) | |
| download | linux-rt-f3d549dd5b217d084c9fe6581e0430909440de2b.tar.gz | |
dt: name all Tegra binding docs consistently
Rename all Tegra binding documentation according to the first or
primary compatible value they describe. This provides a clear naming
scheme for the files, and prevents any naming conflicts should future
SoC versions require their own binding.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'Documentation/devicetree/bindings/gpio/nvidia,tegra20-gpio.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/gpio/nvidia,tegra20-gpio.txt | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/nvidia,tegra20-gpio.txt b/Documentation/devicetree/bindings/gpio/nvidia,tegra20-gpio.txt new file mode 100644 index 000000000000..023c9526e5f8 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/nvidia,tegra20-gpio.txt @@ -0,0 +1,40 @@ +NVIDIA Tegra GPIO controller + +Required properties: +- compatible : "nvidia,tegra<chip>-gpio" +- reg : Physical base address and length of the controller's registers. +- interrupts : The interrupt outputs from the controller. For Tegra20, + there should be 7 interrupts specified, and for Tegra30, there should + be 8 interrupts specified. +- #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. +- #interrupt-cells : Should be 2. + The first cell is the GPIO number. + The second cell is used to specify flags: + bits[3:0] trigger type and level flags: + 1 = low-to-high edge triggered. + 2 = high-to-low edge triggered. + 4 = active high level-sensitive. + 8 = active low level-sensitive. + Valid combinations are 1, 2, 3, 4, 8. +- interrupt-controller : Marks the device node as an interrupt 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; + #interrupt-cells = <2>; + interrupt-controller; +}; |