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Commit eb5064db authored by Olof Johansson's avatar Olof Johansson Committed by Grant Likely
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gpio/tegra: dt: add binding for gpio polarity 



Allocate one bit in the available extra cell to indicate if the gpio
should be considered logically inverted.

Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
Acked-by: default avatarStephen Warren <swarren@nvidia.com>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent 8ff37c38

Documentation/devicetree/bindings/gpio/gpio_nvidia.txt

+2 −1
Original line number Diff line number Diff line
@@ -3,5 +3,6 @@ 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 (currently unused).

  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.