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From: Tomaz Solc <tomaz.solc@tablix.org>
To: barebox@lists.infradead.org
Cc: Tomaz Solc <tomaz.solc@tablix.org>
Subject: [PATCH] watchdog: bcm2835: set timeout_max.
Date: Thu, 14 Feb 2019 14:36:34 +0100	[thread overview]
Message-ID: <20190214133634.7669-1-tomaz.solc@tablix.org> (raw)

BCM2835 watchdog timeout can be set to maximum 15 seconds (0xffffff >> 16).
---
 drivers/watchdog/bcm2835_wdt.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/watchdog/bcm2835_wdt.c b/drivers/watchdog/bcm2835_wdt.c
index d0c51ed9e..781626fa0 100644
--- a/drivers/watchdog/bcm2835_wdt.c
+++ b/drivers/watchdog/bcm2835_wdt.c
@@ -45,6 +45,10 @@
 
 #define SECS_TO_WDOG_TICKS(x) ((x) << 16)
 
+/* Largest value where SECS_TO_WDOG_TICKS doesn't overflow 20 bits
+ * (PM_WDOG_TIME_SET) */
+#define WDOG_SECS_MAX 15
+
 struct bcm2835_wd {
 	struct watchdog wd;
 	void __iomem *base;
@@ -101,6 +105,7 @@ static int bcm2835_wd_probe(struct device_d *dev)
 	}
 	priv->base = IOMEM(iores->start);
 	priv->wd.set_timeout = bcm2835_wd_set_timeout;
+	priv->wd.timeout_max = WDOG_SECS_MAX;
 	priv->wd.hwdev = dev;
 	priv->dev = dev;
 
-- 
2.11.0


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             reply	other threads:[~2019-02-14 13:36 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-14 13:36 Tomaz Solc [this message]
2019-02-18  8:48 ` Sascha Hauer

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