From: Fu Wei <fu....@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 <a...@arndb.de>
Signed-off-by: Fu Wei <fu....@linaro.org>
---
.../devicetree/bindings/watchdog/sbsa-gwdt.txt | 32 ++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/Documentation/devicetree/bindings/watchdog/sbsa-gwdt.txt
b/Documentation/devicetree/bindings/watchdog/sbsa-gwdt.txt
new file mode 100644
index 0000000..8b43640
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/sbsa-gwdt.txt
@@ -0,0 +1,32 @@
+* 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 : Specifies base physical address of the two register frames
+ and length of memory mapped region, order:
+ 1: Watchdog control frame
+ 2: Refresh frame.
+
+- interrupts : Should at least contain WS0 interrupt,
+ the WS1 interrupt is optional, order:
+ 1: WS0 interrupt
+ 2: WS1 interrupt
+
+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>;
+ interrupts = <0 27 4>;
+ timeout-sec = <10 5>;
+};
--
2.4.3
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