From patchwork Wed Jan 4 18:39:34 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [2/6] dt: tegra gpio: Flesh out binding documentation Date: Wed, 04 Jan 2012 08:39:34 -0000 From: Stephen Warren X-Patchwork-Id: 134317 Message-Id: <1325702378-20863-2-git-send-email-swarren@nvidia.com> To: Olof Johansson , Colin Cross Cc: linux-arm-kernel@lists.infradead.org, linux-tegra@vger.kernel.org, devicetree-discuss@lists.ozlabs.org, Stephen Warren Document the required reg and interrupts properties. Add a complete example. Signed-off-by: Stephen Warren --- .../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 eb4b530..50b363c 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; +};