watchdog: rzg2l_wdt: Remove reset de-assert from probe

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[ Upstream commit 064319c3fa ]

There is no need to de-assert the reset signal on probe as the watchdog
is not used prior executing start. Also, the clocks are not enabled in
probe (pm_runtime_enable() doesn't do that), thus this is another indicator
that the watchdog wasn't used previously like this. Instead, keep the
watchdog hardware in its previous state at probe (by default it is in
reset state), enable it when it is started and move it to reset state
when it is stopped. This saves some extra power when the watchdog is
unused.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20240531065723.1085423-6-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Stable-dep-of: bad201b2ac ("watchdog: rzg2l_wdt: Power on the watchdog domain in the restart handler")
Signed-off-by: Sasha Levin <sashal@kernel.org>

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This commit is contained in:

Claudiu Beznea 2024-05-31 09:57:19 +03:00 • committed by Greg Kroah-Hartman

parent b222816f9c

commit 7ea100fb50

1 changed files with 17 additions and 11 deletions

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drivers/watchdog/rzg2l_wdt.c

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