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Diffstat (limited to 'Documentation/devicetree/bindings/gpio/netxbig-gpio-ext.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/gpio/netxbig-gpio-ext.txt | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/netxbig-gpio-ext.txt b/Documentation/devicetree/bindings/gpio/netxbig-gpio-ext.txt new file mode 100644 index 000000000..50ec2e690 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/netxbig-gpio-ext.txt @@ -0,0 +1,22 @@ +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>; +}; |