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| author | Joel Stanley <joel@jms.id.au> | 2018-03-13 07:17:26 +0100 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2018-03-24 10:19:39 +0100 |
| commit | 975b7f0fe669c313f925d60d67bce21f109b0f13 (patch) | |
| tree | a0eba19ff229be90595293673aecba806df1975c /drivers/watchdog/Kconfig | |
| parent | dt-bindings: watchdog: Add Nuvoton NPCM description (diff) | |
| download | linux-975b7f0fe669c313f925d60d67bce21f109b0f13.tar.xz linux-975b7f0fe669c313f925d60d67bce21f109b0f13.zip | |
watchdog: Add Nuvoton NPCM watchdog driver
The Nuvoton NPCM750 has a watchdog implemented as a single register
inside the timer peripheral.
This driver exposes that watchdog as a standard watchdog device with
coarse timeout intervals, limited by the combination of prescaler and
counter that is provided by the hardware. The calculation is taken from
the Nuvoton vendor tree.
The watchdog is left running if a bootloader had it going. The rate is
the one specified in the device tree, or the default value (obtained
from the datasheet).
There is a pre-timeout IRQ that is wired up. This timeout always occurs
1024 clocks before the timeout.
Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog/Kconfig')
| -rw-r--r-- | drivers/watchdog/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index e873522fca2d..db96b92dbe69 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -514,6 +514,17 @@ config COH901327_WATCHDOG This watchdog is used to reset the system and thus cannot be compiled as a module. +config NPCM7XX_WATCHDOG + bool "Nuvoton NPCM750 watchdog" + depends on ARCH_NPCM || COMPILE_TEST + default y if ARCH_NPCM750 + select WATCHDOG_CORE + help + Say Y here to include Watchdog timer support for the + watchdog embedded into the NPCM7xx. + This watchdog is used to reset the system and thus cannot be + compiled as a module. + config TWL4030_WATCHDOG tristate "TWL4030 Watchdog" depends on TWL4030_CORE |