[RFC PATCH v2 04/13] docs/dt: Document nvidia,tegra20-gpio's nvidia,enabled-gpios property

Stephen Warren
2011-08-15T20:28:54Z

Signed-off-by: Stephen Warren <swarren@nvidia.com>
---
.../devicetree/bindings/gpio/gpio_nvidia.txt | 20 ++++++++++++++++++++
1 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt b/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt
index eb4b530..b22fff3 100644
--- a/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt
@@ -6,3 +6,23 @@ Required properties:
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.
+
+Optional properties:
+- nvidia,enabled-gpios : The list of GPIOs that should be controlled by the
+ GPIO controller rather than the pinmux controller.
+
+Example of a gpio-controller node:
+
+ gpio: gpio@6000d000 {
+ compatible = "nvidia,tegra20-gpio";
+ reg = < 0x6000d000 0x1000 >;
+ interrupts = < 64 65 66 67 87 119 121 >;
+ #gpio-cells = <2>;
+ gpio-controller;
+ nvidia,enabled-gpios = <
+ 69 // TEGRA_GPIO_PI5 SD2_CD
+ 57 // TEGRA_GPIO_PH1 SD2_WP
+ 155 // TEGRA_GPIO_PT3 SD2_POWER
+ >;
+ };
+
--
1.7.0.4