summaryrefslogtreecommitdiff
path: root/Documentation/devicetree
diff options
context:
space:
mode:
authorShawn Guo <shawn.guo@linaro.org>2011-07-07 00:37:43 +0800
committerGrant Likely <grant.likely@secretlab.ca>2011-07-08 12:38:18 -0600
commit8937cb602bea120248cef64961fc46836a394c8a (patch)
treedff8c06485812bf1316a7da37c3f690f313b4508 /Documentation/devicetree
parent14305e685dff531583e95c5076f633f2fe2b141c (diff)
gpio/mxc: add device tree probe support
The patch adds device tree probe support for gpio-mxc driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/gpio/fsl-imx-gpio.txt22
1 files changed, 22 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/fsl-imx-gpio.txt b/Documentation/devicetree/bindings/gpio/fsl-imx-gpio.txt
new file mode 100644
index 000000000000..4363ae4b3c14
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/fsl-imx-gpio.txt
@@ -0,0 +1,22 @@
+* Freescale i.MX/MXC GPIO controller
+
+Required properties:
+- compatible : Should be "fsl,<soc>-gpio"
+- reg : Address and length of the register set for the device
+- interrupts : Should be the port interrupt shared by all 32 pins, if
+ one number. If two numbers, the first one is the interrupt shared
+ by low 16 pins and the second one is for high 16 pins.
+- gpio-controller : Marks the device node as a gpio controller.
+- #gpio-cells : Should be two. The first cell is the pin number and
+ the second cell is used to specify optional parameters (currently
+ unused).
+
+Example:
+
+gpio0: gpio@73f84000 {
+ compatible = "fsl,imx51-gpio", "fsl,imx31-gpio";
+ reg = <0x73f84000 0x4000>;
+ interrupts = <50 51>;
+ gpio-controller;
+ #gpio-cells = <2>;
+};