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DT: watchdog: add Alphascale asm9260 watchdog binding documentation.

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Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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Oleksij Rempel 2015-11-25 20:33:23 +01:00 committed by Wim Van Sebroeck
parent aae03dc981
commit a62a723189
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Documentation/devicetree/bindings/watchdog/alphascale-asm9260.txt Normal file
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Alphascale asm9260 Watchdog timer
Required properties:
- compatible : should be "alphascale,asm9260-wdt".
- reg : Specifies base physical address and size of the registers.
- clocks : the clocks feeding the watchdog timer. See clock-bindings.txt
- clock-names : should be set to
"mod" - source for tick counter.
"ahb" - ahb gate.
- resets : phandle pointing to the system reset controller with
line index for the watchdog.
- reset-names : should be set to "wdt_rst".
Optional properties:
- timeout-sec : shall contain the default watchdog timeout in seconds,
if unset, the default timeout is 30 seconds.
- alphascale,mode : three modes are supported
"hw" - hw reset (default).
"sw" - sw reset.
"debug" - no action is taken.
Example:
watchdog0: watchdog@80048000 {
compatible = "alphascale,asm9260-wdt";
reg = <0x80048000 0x10>;
clocks = <&acc CLKID_SYS_WDT>, <&acc CLKID_AHB_WDT>;
clock-names = "mod", "ahb";
interrupts = <55>;
resets = <&rst WDT_RESET>;
reset-names = "wdt_rst";
timeout-sec = <30>;
alphascale,mode = "hw";
};