Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
[sfrench/cifs-2.6.git] / Documentation / devicetree / bindings / gpio / gpio-aspeed.txt
1 Aspeed GPIO controller Device Tree Bindings
2 -------------------------------------------
3
4 Required properties:
5 - compatible            : Either "aspeed,ast2400-gpio", "aspeed,ast2500-gpio",
6                                         or "aspeed,ast2600-gpio".
7
8 - #gpio-cells           : Should be two
9                           - First cell is the GPIO line number
10                           - Second cell is used to specify optional
11                             parameters (unused)
12
13 - reg                   : Address and length of the register set for the device
14 - gpio-controller       : Marks the device node as a GPIO controller.
15 - interrupts            : Interrupt specifier (see interrupt bindings for
16                           details)
17 - interrupt-controller  : Mark the GPIO controller as an interrupt-controller
18
19 Optional properties:
20
21 - clocks                : A phandle to the clock to use for debounce timings
22 - ngpios                : Number of GPIOs controlled by this controller. Should be set
23                                   when there are multiple GPIO controllers on a SoC (ast2600).
24
25 The gpio and interrupt properties are further described in their respective
26 bindings documentation:
27
28 - Documentation/devicetree/bindings/gpio/gpio.txt
29 - Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
30
31   Example:
32         gpio@1e780000 {
33                 #gpio-cells = <2>;
34                 compatible = "aspeed,ast2400-gpio";
35                 gpio-controller;
36                 interrupts = <20>;
37                 reg = <0x1e780000 0x1000>;
38                 interrupt-controller;
39         };