Commit 71ac1345 authored by Uwe Kleine-König's avatar Uwe Kleine-König Committed by Alexandre Belloni

rtc: pcf2127: only use watchdog when explicitly available

Most boards using the pcf2127 chip (in my bubble) don't make use of the
watchdog functionality and the respective output is not connected. The
effect on such a board is that there is a watchdog device provided that
doesn't work.

So only register the watchdog if the device tree has a "reset-source"
property.
Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
[RV: s/has-watchdog/reset-source/]
Signed-off-by: default avatarRasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20201218101054.25416-3-rasmus.villemoes@prevas.dk
parent 320d159e
......@@ -336,7 +336,8 @@ static int pcf2127_watchdog_init(struct device *dev, struct pcf2127 *pcf2127)
u32 wdd_timeout;
int ret;
if (!IS_ENABLED(CONFIG_WATCHDOG))
if (!IS_ENABLED(CONFIG_WATCHDOG) ||
!device_property_read_bool(dev, "reset-source"))
return 0;
pcf2127->wdd.parent = dev;
......
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