On Tue, Jun 23, 2015 at 9:16 AM, <fu.wei@xxxxxxxxxx> wrote:
> From: Fu Wei <fu.wei@xxxxxxxxxx>
>
> The sbsa-gwdt.txt documentation in devicetree/bindings/watchdog is for
> introducing SBSA(Server Base System Architecture) Generic Watchdog
> device node info into FDT.
>
> Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
> Signed-off-by: Fu Wei <fu.wei@xxxxxxxxxx>
> ---
> .../devicetree/bindings/watchdog/sbsa-gwdt.txt | 36 ++++++++++++++++++++++
> 1 file changed, 36 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/watchdog/sbsa-gwdt.txt
>
> diff --git a/Documentation/devicetree/bindings/watchdog/sbsa-gwdt.txt b/Documentation/devicetree/bindings/watchdog/sbsa-gwdt.txt
> new file mode 100644
> index 0000000..010e5c4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/watchdog/sbsa-gwdt.txt
> @@ -0,0 +1,36 @@
> +* SBSA(Server Base System Architecture) Generic Watchdog
> +
> +The SBSA Generic Watchdog Timer is used for resetting the system after
> +two stages of timeout.
> +More details: ARM-DEN-0029 - Server Base System Architecture (SBSA)
> +
> +Required properties:
> +- compatible : Should at least contain "arm,sbsa-gwdt".
> +
> +- reg : base physical address of the frames and length of memory mapped region.
This needs to specify the ordering of refresh and control.
> +
> +- reg-names : Should contain the resource reg names to show the order of
> + the values in "reg".
> + Must include the following entries : "refresh", "control".
This should be optional.
> +- interrupts : Should at least contain WS0 interrupt,
> + the WS1 Signal is optional.
s/Signal/interrupt/ ?
> +
> +- interrupt-names : Should contain the resource interrupt names.
> + Must include the following entries : "ws0". "ws1" is optional.
This should be optional.
> +
> +Optional properties
> +- timeout-sec : Watchdog pre-timeout and timeout values (in seconds).
> + The first is timeout values, then pre-timeout.
> +
> +Example for FVP Foundation Model v8:
> +
> +watchdog@2a440000 {
> + compatible = "arm,sbsa-gwdt";
> + reg = <0x0 0x2a440000 0 0x1000>,
> + <0x0 0x2a450000 0 0x1000>;
> + reg-names = "control", "refresh";
> + interrupts = <0 27 4>;
> + interrupt-names = "ws0";
> + timeout-sec = <10 5>;
> +};
> --
> 1.9.1
>
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