Bindings/gpio/netxbig-gpio-ext.txt

   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 };