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Shawn Guo8937cb62011-07-07 00:37:43 +08001* Freescale i.MX/MXC GPIO controller
2
3Required properties:
4- compatible : Should be "fsl,<soc>-gpio"
5- reg : Address and length of the register set for the device
6- interrupts : Should be the port interrupt shared by all 32 pins, if
7 one number. If two numbers, the first one is the interrupt shared
8 by low 16 pins and the second one is for high 16 pins.
9- gpio-controller : Marks the device node as a gpio controller.
10- #gpio-cells : Should be two. The first cell is the pin number and
Shawn Guoc1cb4382012-06-28 11:15:37 +080011 the second cell is used to specify the gpio polarity:
12 0 = active high
13 1 = active low
Shawn Guo88cde8b2012-07-06 20:03:37 +080014- interrupt-controller: Marks the device node as an interrupt controller.
15- #interrupt-cells : Should be 2. The first cell is the GPIO number.
16 The second cell bits[3:0] is used to specify trigger type and level flags:
17 1 = low-to-high edge triggered.
18 2 = high-to-low edge triggered.
19 4 = active high level-sensitive.
20 8 = active low level-sensitive.
Shawn Guo8937cb62011-07-07 00:37:43 +080021
22Example:
23
24gpio0: gpio@73f84000 {
Benoît Thébaudeauaeb27742012-06-22 21:04:06 +020025 compatible = "fsl,imx51-gpio", "fsl,imx35-gpio";
Shawn Guo8937cb62011-07-07 00:37:43 +080026 reg = <0x73f84000 0x4000>;
27 interrupts = <50 51>;
28 gpio-controller;
29 #gpio-cells = <2>;
Shawn Guo88cde8b2012-07-06 20:03:37 +080030 interrupt-controller;
31 #interrupt-cells = <2>;
Shawn Guo8937cb62011-07-07 00:37:43 +080032};