From 325f510fcd9cda5a44bcb662b74ba4e3dabaca10 Mon Sep 17 00:00:00 2001 From: Marcus Folkesson Date: Wed, 26 Mar 2025 09:29:51 +0100 Subject: [PATCH] watchdog: da9052_wdt: respect TWDMIN 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 Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20250326-da9052-fixes-v3-4-a38a560fef0e@gmail.com Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck --- 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 5bef70cb74b3..afb7887c3a1e 100644 --- a/drivers/watchdog/da9052_wdt.c +++ b/drivers/watchdog/da9052_wdt.c @@ -180,6 +180,7 @@ 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; -- 2.50.1