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    Subject[PATCH v6 1/8] Documentation: add sbsa-gwdt.txt documentation
    Date
    From: Fu Wei <fu.wei@linaro.org>

    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@arndb.de>
    Signed-off-by: Fu Wei <fu.wei@linaro.org>
    ---
    .../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.
    +
    +- reg-names : Should contain the resource reg names to show the order of
    + the values in "reg".
    + Must include the following entries : "refresh", "control".
    +
    +- interrupts : Should at least contain WS0 interrupt,
    + the WS1 Signal is optional.
    +
    +- interrupt-names : Should contain the resource interrupt names.
    + Must include the following entries : "ws0". "ws1" is 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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