From: Marcus Folkesson <marcus.folkesson@gmail.com>
To: Support Opensource <support.opensource@diasemi.com>,
Wim Van Sebroeck <wim@linux-watchdog.org>,
Guenter Roeck <linux@roeck-us.net>
Cc: linux-watchdog@vger.kernel.org, linux-kernel@vger.kernel.org,
Marcus Folkesson <marcus.folkesson@gmail.com>
Subject: [PATCH v2 4/4] watchdog: da9052_wdt: respect TWDMIN
Date: Tue, 25 Mar 2025 08:27:15 +0100 [thread overview]
Message-ID: <20250325-da9052-fixes-v2-4-bfac3f07b4a4@gmail.com> (raw)
In-Reply-To: <20250325-da9052-fixes-v2-0-bfac3f07b4a4@gmail.com>
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>
---
drivers/watchdog/da9052_wdt.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/watchdog/da9052_wdt.c b/drivers/watchdog/da9052_wdt.c
index b821006fca70480bf3b23a62bded4e66851a537e..1e49cbae7eaec3015264dec891032a56f56e36cc 100644
--- a/drivers/watchdog/da9052_wdt.c
+++ b/drivers/watchdog/da9052_wdt.c
@@ -179,6 +179,7 @@ static int da9052_wdt_probe(struct platform_device *pdev)
da9052_wdt = &driver_data->wdt;
da9052_wdt->timeout = DA9052_DEF_TIMEOUT;
+ da9052_wdt->min_hw_heartbeat_ms = DA9052_TWDMIN;
da9052_wdt->info = &da9052_wdt_info;
da9052_wdt->ops = &da9052_wdt_ops;
da9052_wdt->parent = dev;
--
2.48.1
next prev parent reply other threads:[~2025-03-25 7:27 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-25 7:27 [PATCH v2 0/4] Various fixes for the da9052 watchdog Marcus Folkesson
2025-03-25 7:27 ` [PATCH v2 1/4] watchdog: da9052_wdt: add support for nowayout Marcus Folkesson
2025-03-25 13:01 ` Guenter Roeck
2025-03-25 7:27 ` [PATCH v2 2/4] watchdog: da9052_wdt: use timeout value from external inputs Marcus Folkesson
2025-03-25 13:01 ` Guenter Roeck
2025-03-25 7:27 ` [PATCH v2 3/4] watchdog: da9052_wdt: do not disable wdt during probe Marcus Folkesson
2025-03-25 13:05 ` Guenter Roeck
2025-03-25 7:27 ` Marcus Folkesson [this message]
2025-03-25 13:05 ` [PATCH v2 4/4] watchdog: da9052_wdt: respect TWDMIN Guenter Roeck
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