From mboxrd@z Thu Jan 1 00:00:00 1970 From: Olof Johansson Subject: [PATCH] gpio/tegra: dt: add binding for gpio polarity Date: Thu, 14 Jul 2011 22:17:13 -0700 Message-ID: <20110715051713.GA28865@quad.lixom.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Grant Likely Cc: linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org List-Id: linux-tegra@vger.kernel.org Allocate one bit in the available extra cell to indicate if the gpio should be considered logically inverted. Signed-off-by: Olof Johansson --- .../devicetree/bindings/gpio/gpio_nvidia.txt | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt b/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt index 64aac39..adcf55c 100644 --- a/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt +++ b/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt @@ -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. -- 1.7.4.1