On Sun, May 01, 2016 at 02:18:37PM +0200, Christian Lamparter wrote:
> This patch adds the device tree bindings for the Western Digital's
> MyBook Live memory-mapped GPIO controllers.
>
> The gpios will be supported by gpio-mmio code of the
> GPIO generic library.
>
> Signed-off-by: Christian Lamparter <chunk...@googlemail.com>
> ---
> .../devicetree/bindings/gpio/wd,mbl-gpio.txt | 38
> ++++++++++++++++++++++
> 1 file changed, 38 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/gpio/wd,mbl-gpio.txt
>
> diff --git a/Documentation/devicetree/bindings/gpio/wd,mbl-gpio.txt
> b/Documentation/devicetree/bindings/gpio/wd,mbl-gpio.txt
> new file mode 100644
> index 0000000..038c3a6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpio/wd,mbl-gpio.txt
> @@ -0,0 +1,38 @@
> +Bindings for the Western Digital's MyBook Live memory-mapped GPIO
> controllers.
Are these really product level GPIOs rather than some SOC's GPIOs
(APM?)?
> +
> +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;
> + };
> --
> 2.8.1
>
