[PATCH v5 1/5] dt-bindings: watchdog: Document STM32 IWDG bindings

[Yannick Fertre <yannick.fertre-qxv4g6HH51o@public.gmane.org>]

This adds documentation of device tree bindings for the STM32 IWDG
(Independent WatchDoG).

Signed-off-by: Yannick Fertre <yannick.fertre-qxv4g6HH51o@public.gmane.org>
---
 .../devicetree/bindings/watchdog/st,stm32-iwdg.txt    | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.txt

diff --git a/Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.txt b/Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.txt
new file mode 100644
index 0000000..cc13b10a
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.txt
@@ -0,0 +1,19 @@
+STM32 Independent WatchDoG (IWDG)
+---------------------------------
+
+Required properties:
+- compatible: "st,stm32-iwdg"
+- reg: physical base address and length of the registers set for the device
+- clocks: must contain a single entry describing the clock input
+
+Optional Properties:
+- timeout-sec: Watchdog timeout value in seconds.
+
+Example:
+
+iwdg: watchdog@40003000 {
+	compatible = "st,stm32-iwdg";
+	reg = <0x40003000 0x400>;
+	clocks = <&clk_lsi>;
+	timeout-sec = <32>;
+};
-- 
1.9.1

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