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| author |   Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2020-12-18 11:10:54 +0100 |
|---|---|---|
| committer |   Alexandre Belloni <alexandre.belloni@bootlin.com> | 2020-12-19 01:57:44 +0100 |
| commit | 71ac13457d9d1007effde65b54818106b2c2b525 (patch) | |
| tree | 13a8ecc7ed7ff175f19111dd52d40ae7bb4e3eba /drivers/rtc | |
| parent | dt-bindings: rtc: add reset-source property (diff) | |
| download | linux-dev-71ac13457d9d1007effde65b54818106b2c2b525.tar.xz linux-dev-71ac13457d9d1007effde65b54818106b2c2b525.zip | |
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: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
[RV: s/has-watchdog/reset-source/]
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20201218101054.25416-3-rasmus.villemoes@prevas.dk
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-pcf2127.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c index 33fa8b17b79c..39a7b5116aa4 100644 --- a/drivers/rtc/rtc-pcf2127.c +++ b/drivers/rtc/rtc-pcf2127.c @@ -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; |