GNU Linux-libre 4.14.266-gnu1
[releases.git] / Documentation / devicetree / bindings / gpio / gpio-nmk.txt
1 Nomadik GPIO controller
2
3 Required properties:
4 - compatible            : Should be "st,nomadik-gpio".
5 - reg                   : Physical base address and length of the controller's registers.
6 - interrupts            : The interrupt outputs from the controller.
7 - #gpio-cells           : Should be two:
8                             The first cell is the pin number.
9                             The second cell is used to specify optional parameters:
10                               - bits[3:0] trigger type and level flags:
11                                   1 = low-to-high edge triggered.
12                                   2 = high-to-low edge triggered.
13                                   4 = active high level-sensitive.
14                                   8 = active low level-sensitive.
15 - gpio-controller       : Marks the device node as a GPIO controller.
16 - interrupt-controller  : Marks the device node as an interrupt controller.
17 - gpio-bank             : Specifies which bank a controller owns.
18 - st,supports-sleepmode : Specifies whether controller can sleep or not
19
20 Example:
21
22                 gpio1: gpio@8012e080 {
23                         compatible = "st,nomadik-gpio";
24                         reg =  <0x8012e080 0x80>;
25                         interrupts = <0 120 0x4>;
26                         #gpio-cells = <2>;
27                         gpio-controller;
28                         interrupt-controller;
29                         st,supports-sleepmode;
30                         gpio-bank = <1>;
31                 };