5.15-stable review patch. If anyone has any objections, please let me know.
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From: Marcus Folkesson marcus.folkesson@gmail.com
[ Upstream commit 325f510fcd9cda5a44bcb662b74ba4e3dabaca10 ]
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 Reviewed-by: Guenter Roeck linux@roeck-us.net Link: https://lore.kernel.org/r/20250326-da9052-fixes-v3-4-a38a560fef0e@gmail.com Signed-off-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Wim Van Sebroeck wim@linux-watchdog.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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 d708c091bf1b1..180526220d8c4 100644 --- a/drivers/watchdog/da9052_wdt.c +++ b/drivers/watchdog/da9052_wdt.c @@ -164,6 +164,7 @@ 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;