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dt-bindings: watchdog: Document STM32 IWDG bindings 

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

Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Yannick Fertre 2017-04-06 14:19:24 +02:00 committed by Wim Van Sebroeck
parent f66872b5be
commit 5df11427b2
1 changed files with 19 additions and 0 deletions
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Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.txt Normal file
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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>;
};