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Bindings for the Western Digital's MyBook Live memory-mapped GPIO controllers.
The Western Digital MyBook Live has two memory-mapped GPIO controllers.
Both GPIO controller only have a single 8-bit data register, where GPIO
state can be read and/or written.
Required properties:
- compatible: should be "wd,mbl-gpio"
- reg-names: must contain
"dat" - data register
- reg: address + size pairs describing the GPIO register sets;
order must correspond with the order of entries in reg-names
- #gpio-cells: must be set to 2. The first cell is the pin number and
the second cell is used to specify the gpio polarity:
0 = active high
1 = active low
- gpio-controller: Marks the device node as a gpio controller.
Optional properties:
- no-output: GPIOs are read-only.
Examples:
gpio0: gpio0@e0000000 {
compatible = "wd,mbl-gpio";
reg-names = "dat";
reg = <0xe0000000 0x1>;
#gpio-cells = <2>;
gpio-controller;
};
gpio1: gpio1@e0100000 {
compatible = "wd,mbl-gpio";
reg-names = "dat";
reg = <0xe0100000 0x1>;
#gpio-cells = <2>;
gpio-controller;
no-output;
};
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