On Tue, Jun 23, 2015 at 9:16 AM, fu.wei@linaro.org wrote:
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.
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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