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