[deliverable/linux.git] / Documentation / devicetree / bindings / gpio / netxbig-gpio-ext.txt

Binding for the GPIO extension bus found on some LaCie/Seagate boards
(Example: 2Big/5Big Network v2, 2Big NAS).

Required properties:
- compatible: "lacie,netxbig-gpio-ext".
- addr-gpios: GPIOs representing the address register (LSB -> MSB).
- data-gpios: GPIOs representing the data register (LSB -> MSB).
- enable-gpio: latches the new configuration (address, data) on raising edge.

Example:

netxbig_gpio_ext: netxbig-gpio-ext {
	compatible = "lacie,netxbig-gpio-ext";

	addr-gpios = <&gpio1 15 GPIO_ACTIVE_HIGH
		      &gpio1 16 GPIO_ACTIVE_HIGH
		      &gpio1 17 GPIO_ACTIVE_HIGH>;
	data-gpios = <&gpio1 12 GPIO_ACTIVE_HIGH
		      &gpio1 13 GPIO_ACTIVE_HIGH
		      &gpio1 14 GPIO_ACTIVE_HIGH>;
	enable-gpio = <&gpio0 29 GPIO_ACTIVE_HIGH>;
};
Commit	Line	Data
2976b179 SG	1	Binding for the GPIO extension bus found on some LaCie/Seagate boards
	2	(Example: 2Big/5Big Network v2, 2Big NAS).
	3
	4	Required properties:
	5	- compatible: "lacie,netxbig-gpio-ext".
	6	- addr-gpios: GPIOs representing the address register (LSB -> MSB).
	7	- data-gpios: GPIOs representing the data register (LSB -> MSB).
	8	- enable-gpio: latches the new configuration (address, data) on raising edge.
	9
	10	Example:
	11
	12	netxbig_gpio_ext: netxbig-gpio-ext {
	13	compatible = "lacie,netxbig-gpio-ext";
	14
	15	addr-gpios = <&gpio1 15 GPIO_ACTIVE_HIGH
	16	&gpio1 16 GPIO_ACTIVE_HIGH
	17	&gpio1 17 GPIO_ACTIVE_HIGH>;
	18	data-gpios = <&gpio1 12 GPIO_ACTIVE_HIGH
	19	&gpio1 13 GPIO_ACTIVE_HIGH
	20	&gpio1 14 GPIO_ACTIVE_HIGH>;
	21	enable-gpio = <&gpio0 29 GPIO_ACTIVE_HIGH>;
	22	};