watchdog: da9052_wdt: respect TWDMIN

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[ Upstream commit 325f510fcd ]

We have to wait at least the minimium time for the watchdog window
(TWDMIN) before writings to the wdt register after the
watchdog is activated.
Otherwise the chip will assert TWD_ERROR and power down to reset mode.

Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20250326-da9052-fixes-v3-4-a38a560fef0e@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Marcus Folkesson 2025-03-26 09:29:51 +01:00 • committed by Greg Kroah-Hartman

parent b3237d451b

commit f52827a333

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drivers/watchdog/da9052_wdt.c

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