From: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
To: linux-rtc@vger.kernel.org,
Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: linux-kernel@vger.kernel.org, "Rob Herring" <robh+dt@kernel.org>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Qiang Zhao" <qiang.zhao@nxp.com>,
"Bruno Thomsen" <bruno.thomsen@gmail.com>,
"Rasmus Villemoes" <rasmus.villemoes@prevas.dk>
Subject: [PATCH v2 3/3] rtc: pcf2127: only use watchdog when explicitly available
Date: Fri, 11 Dec 2020 22:56:11 +0100 [thread overview]
Message-ID: <20201211215611.24392-4-rasmus.villemoes@prevas.dk> (raw)
In-Reply-To: <20201211215611.24392-1-rasmus.villemoes@prevas.dk>
From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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>
---
drivers/rtc/rtc-pcf2127.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c
index aebf85fcc328..f3d4eac4f230 100644
--- a/drivers/rtc/rtc-pcf2127.c
+++ b/drivers/rtc/rtc-pcf2127.c
@@ -340,7 +340,8 @@ 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;
--
2.23.0
next prev parent reply other threads:[~2020-12-11 22:53 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-21 5:48 [Patch v2 1/3] dt-bindings: rtc: pcf2127: Add bindings for nxp,pcf2127 Qiang Zhao
2020-09-21 5:48 ` [Patch v2 2/3] rtc: pcf2127: add "no-watchdog" property Qiang Zhao
2020-09-21 5:48 ` [Patch v2 3/3] arm64: dts: lx2160a: Add "no-watchdog" property to pcf2127 Qiang Zhao
2020-09-23 9:44 ` [Patch v2 1/3] dt-bindings: rtc: pcf2127: Add bindings for nxp,pcf2127 Alexandre Belloni
2020-09-24 3:20 ` Qiang Zhao
2020-09-24 7:04 ` Uwe Kleine-König
2020-09-24 7:23 ` Qiang Zhao
2020-09-24 7:47 ` Alexandre Belloni
2020-09-24 10:52 ` [PATCH 0/2] rtc: pcf2127: only use watchdog when explicitly available Uwe Kleine-König
2020-09-24 10:52 ` [PATCH 1/2] rtc: pcf2127: move watchdog initialisation to a separate function Uwe Kleine-König
2020-09-27 7:50 ` Bruno Thomsen
2020-09-24 10:52 ` [PATCH 2/2] [RFC] rtc: pcf2127: only use watchdog when explicitly available Uwe Kleine-König
2020-09-27 8:09 ` Bruno Thomsen
2020-09-27 15:54 ` Guenter Roeck
2020-09-28 8:43 ` Uwe Kleine-König
2020-09-28 16:26 ` Guenter Roeck
2020-10-26 7:23 ` [PATCH 0/2] " Qiang Zhao
2020-10-26 20:48 ` Alexandre Belloni
2020-10-26 21:29 ` Guenter Roeck
2020-11-30 9:51 ` Rasmus Villemoes
2020-12-04 9:27 ` Alexandre Belloni
2020-12-11 21:56 ` [PATCH v2 0/3] add reset-source RTC binding, update pcf2127 driver Rasmus Villemoes
2020-12-11 21:56 ` [PATCH v2 1/3] dt-bindings: rtc: add reset-source property Rasmus Villemoes
2020-12-11 22:30 ` Rob Herring
2020-12-11 23:10 ` Rasmus Villemoes
2020-12-17 16:51 ` Rob Herring
2020-12-17 18:12 ` Uwe Kleine-König
2020-12-17 18:23 ` Rasmus Villemoes
2020-12-17 19:02 ` Rob Herring
2020-12-17 20:28 ` Uwe Kleine-König
2020-12-12 9:25 ` Uwe Kleine-König
2020-12-11 21:56 ` [PATCH v2 2/3] rtc: pcf2127: move watchdog initialisation to a separate function Rasmus Villemoes
2020-12-11 21:56 ` Rasmus Villemoes [this message]
2020-12-18 10:10 ` [PATCH v3 0/2] add reset-source RTC binding, update pcf2127 driver Rasmus Villemoes
2020-12-18 10:10 ` [PATCH v3 1/2] dt-bindings: rtc: add reset-source property Rasmus Villemoes
2020-12-18 21:19 ` Rob Herring
2020-12-18 10:10 ` [PATCH v3 2/2] rtc: pcf2127: only use watchdog when explicitly available Rasmus Villemoes
2020-12-19 0:58 ` [PATCH v3 0/2] add reset-source RTC binding, update pcf2127 driver Alexandre Belloni
2020-09-24 16:59 ` [Patch v2 1/3] dt-bindings: rtc: pcf2127: Add bindings for nxp,pcf2127 Bruno Thomsen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20201211215611.24392-4-rasmus.villemoes@prevas.dk \
--to=rasmus.villemoes@prevas.dk \
--cc=alexandre.belloni@bootlin.com \
--cc=bruno.thomsen@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rtc@vger.kernel.org \
--cc=qiang.zhao@nxp.com \
--cc=robh+dt@kernel.org \
--cc=u.kleine-koenig@pengutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).