38 lines
1.1 KiB
Plaintext
38 lines
1.1 KiB
Plaintext
|
Binding for Qualcomm Atheros AR7xxx/AR9xxx GPIO controller
|
||
|
|
|
||
|
|
Required properties:
|
||
|
|
- compatible: has to be "qca,<soctype>-gpio" and one of the following
|
||
|
|
fallbacks:
|
||
|
|
- "qca,ar7100-gpio"
|
||
|
|
- "qca,ar9340-gpio"
|
||
|
|
- reg: Base address and size of the controllers memory area
|
||
|
|
- 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.
|
||
|
|
- ngpios: Should be set to the number of GPIOs available on the SoC.
|
||
|
|
|
||
|
|
Optional properties:
|
||
|
|
- interrupts: Interrupt specifier for the controllers interrupt.
|
||
|
|
- interrupt-controller : Identifies the node as an interrupt controller
|
||
|
|
- #interrupt-cells : Specifies the number of cells needed to encode interrupt
|
||
|
|
source, should be 2
|
||
|
|
|
||
|
|
Please refer to interrupts.txt in this directory for details of the common
|
||
|
|
Interrupt Controllers bindings used by client devices.
|
||
|
|
|
||
|
|
Example:
|
||
|
|
|
||
|
|
gpio@18040000 {
|
||
|
|
compatible = "qca,ar9132-gpio", "qca,ar7100-gpio";
|
||
|
|
reg = <0x18040000 0x30>;
|
||
|
|
interrupts = <2>;
|
||
|
|
|
||
|
|
ngpios = <22>;
|
||
|
|
|
||
|
|
gpio-controller;
|
||
|
|
#gpio-cells = <2>;
|
||
|
|
|
||
|
|
interrupt-controller;
|
||
|
|
#interrupt-cells = <2>;
|
||
|
|
};
|