From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Update the watchdog minimum timeout value to be derived from
`max_hw_heartbeat_ms` using `DIV_ROUND_UP()` to ensure a valid and
consistent minimum timeout in seconds.

This avoids hardcoding a value of `1` second and allows the driver to
adapt correctly to different hardware configurations that may set
`max_hw_heartbeat_ms` differently (e.g., based on the SoC clock source
and divider).

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
---
 drivers/watchdog/rzv2h_wdt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/watchdog/rzv2h_wdt.c b/drivers/watchdog/rzv2h_wdt.c
index f0e2bf786acc..9c11ce323c16 100644
--- a/drivers/watchdog/rzv2h_wdt.c
+++ b/drivers/watchdog/rzv2h_wdt.c

@@ -263,7 +263,7 @@ static int rzv2h_wdt_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	priv->wdev.min_timeout = 1;
+	priv->wdev.min_timeout = DIV_ROUND_UP(priv->wdev.max_hw_heartbeat_ms, MSEC_PER_SEC);
 	priv->wdev.timeout = WDT_DEFAULT_TIMEOUT;
 	priv->wdev.info = &rzv2h_wdt_ident;
 	priv->wdev.ops = &rzv2h_wdt_ops;

-- 
2.49.0