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watchdog: uniphier: add UniPhier watchdog driver

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Add a watchdog driver for Socionext UniPhier series SoC.
Note that the timeout value for this device must be a power
of 2 because of the specification.

Signed-off-by: Keiji Hayashibara <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>
This commit is contained in:
Keiji Hayashibara 2017-06-14 16:53:44 +09:00 • committed by Wim Van Sebroeck
commit e7bf02895f
4 changed files with 287 additions and 0 deletions
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6
Documentation/watchdog/watchdog-parameters.txt
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@ -369,6 +369,12 @@ timeout: Watchdog timeout in seconds. (0<timeout<N, default=60)
nowayout: Watchdog cannot be stopped once started
(default=kernel config parameter)
-------------------------------------------------
uniphier_wdt:
timeout: Watchdog timeout in power of two seconds.
(1 <= timeout <= 128, default=64)
nowayout: Watchdog cannot be stopped once started
(default=kernel config parameter)
-------------------------------------------------
w83627hf_wdt:
wdt_io: w83627hf/thf WDT io port (default 0x2E)
timeout: Watchdog timeout in seconds. 1 <= timeout <= 255, default=60.