On Tue, Jan 03, 2017 at 04:55:32PM -0800, David Daney wrote:
> From: David Daney <david.daney@xxxxxxxxxx>
>
> Signed-off-by: David Daney <david.daney@xxxxxxxxxx>
> ---
> .../devicetree/bindings/gpio/gpio-thunderx.txt | 33 ++++++++++++++++++++++
> 1 file changed, 33 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/gpio/gpio-thunderx.txt
>
> diff --git a/Documentation/devicetree/bindings/gpio/gpio-thunderx.txt b/Documentation/devicetree/bindings/gpio/gpio-thunderx.txt
> new file mode 100644
> index 0000000..ba3cdae
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpio/gpio-thunderx.txt
> @@ -0,0 +1,33 @@
> +Cavium ThunderX/OCTEON-TX GPIO controller bindings
> +
> +Required Properties:
> +- reg: The controller bus address.
> +- gpio-controller: Marks the device node as a GPIO controller.
> +- #gpio-cells: Must be 2.
> + - First cell is the GPIO pin number relative to the controller.
> + - Second cell is standard of_gpio_flags:
> + 1 - Active Low.
> + 2 - Single Ended.
Just reference where these are defined.
> +
> +Optional Properties:
> +- compatible: "cavium,thunder-8890-gpio", unused as PCI driver binding is used.
> +- interrupt-controller: Marks the device node as an interrupt controller.
> +- #interrupt-cells: Must be present and have value of 2 if
> + "interrupt-controller" is present.
> + - First cell is the GPIO pin number relative to the controller.
> + - Second cell is triggering flags, one of:
> + 1 - Edge Rising
> + 2 - Edge Falling
> + 4 - Level High
> + 8 - Level Low
Just reference interrupt-controller/interrupts.txt or the header
defining these.
> +
> +Example:
> +
> +gpio_6_0: gpio0@6,0 {
gpio@6,0
> + compatible = "cavium,thunder-8890-gpio";
> + reg = <0x3000 0 0 0 0>; /* DEVFN = 0x30 (6:0) */
> + gpio-controller;
> + #gpio-cells = <2>;
> + interrupt-controller;
> + #interrupt-cells = <2>;
> +};
> --
> 1.8.3.1
>
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