The binding is provided by the watchdog core.
Signed-off-by: Fabio Porcedda <fabio.porcedda@xxxxxxxxx>
f2
---
.../devicetree/bindings/watchdog/atmel-wdt.txt | 4 ++++
.../devicetree/bindings/watchdog/marvel.txt | 5 +++++
drivers/watchdog/at91sam9_wdt.c | 23 ++++++++++++++++------
drivers/watchdog/orion_wdt.c | 13 ++++++------
4 files changed, 33 insertions(+), 12 deletions(-)
diff --git a/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt b/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt
index 2957ebb..ad4cc0a 100644
--- a/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt
@@ -7,9 +7,13 @@ Required properties:
- reg: physical base address of the controller and length of memory mapped
region.
+Optional properties:
+- timeout-sec : Contains the watchdog timeout in seconds
+
Example:
watchdog@fffffd40 {
compatible = "atmel,at91sam9260-wdt";
reg = <0xfffffd40 0x10>;
+ timeout-sec = <10>;
};
diff --git a/Documentation/devicetree/bindings/watchdog/marvel.txt b/Documentation/devicetree/bindings/watchdog/marvel.txt
index 0b2503a..5dc8d30 100644
--- a/Documentation/devicetree/bindings/watchdog/marvel.txt
+++ b/Documentation/devicetree/bindings/watchdog/marvel.txt
@@ -5,10 +5,15 @@ Required Properties:
- Compatibility : "marvell,orion-wdt"
- reg : Address of the timer registers
+Optional properties:
+
+- timeout-sec : Contains the watchdog timeout in seconds
+
Example:
wdt@20300 {
compatible = "marvell,orion-wdt";
reg = <0x20300 0x28>;
+ timeout-sec = <10>;
status = "okay";
};
diff --git a/drivers/watchdog/at91sam9_wdt.c b/drivers/watchdog/at91sam9_wdt.c
index dc42e44..3f66193 100644
--- a/drivers/watchdog/at91sam9_wdt.c
+++ b/drivers/watchdog/at91sam9_wdt.c
@@ -32,7 +32,6 @@
#include <linux/timer.h>
#include <linux/bitops.h>
#include <linux/uaccess.h>
-#include <linux/of.h>
#include "at91sam9_wdt.h"
@@ -57,11 +56,13 @@
#define WDT_TIMEOUT (HZ/2)
/* User land timeout */
-#define WDT_HEARTBEAT 15
-static int heartbeat = WDT_HEARTBEAT;
+#define MIN_HEARTBEAT 1
+#define MAX_HEARTBEAT 16
+#define DEF_HEARTBEAT 15
+static int heartbeat = 0;
module_param(heartbeat, int, 0);
MODULE_PARM_DESC(heartbeat, "Watchdog heartbeats in seconds. "
- "(default = " __MODULE_STRING(WDT_HEARTBEAT) ")");
+ "(default = " __MODULE_STRING(DEF_HEARTBEAT) ")");
static bool nowayout = WATCHDOG_NOWAYOUT;
module_param(nowayout, bool, 0);
@@ -255,6 +256,11 @@ static struct miscdevice at91wdt_miscdev = {
.fops = &at91wdt_fops,
};
+static struct watchdog_device at91wdt_wdd __initdata = {
+ .min_timeout = MIN_HEARTBEAT,
+ .max_timeout = MAX_HEARTBEAT,
+};
+
static int __init at91wdt_probe(struct platform_device *pdev)
{
struct resource *r;
@@ -273,6 +279,11 @@ static int __init at91wdt_probe(struct platform_device *pdev)
return -ENOMEM;
}
+ if ((heartbeat < MIN_HEARTBEAT) || (heartbeat > MAX_HEARTBEAT)) {
+ at91wdt_wdd.timeout = DEF_HEARTBEAT;
+ watchdog_probe_dt_timeout(&at91wdt_wdd, pdev->dev.of_node);
+ }
+
/* Set watchdog */
res = at91_wdt_settimeout(ms_to_ticks(WDT_HW_TIMEOUT * 1000));
if (res)
@@ -282,12 +293,12 @@ static int __init at91wdt_probe(struct platform_device *pdev)
if (res)
return res;
- at91wdt_private.next_heartbeat = jiffies + heartbeat * HZ;
+ at91wdt_private.next_heartbeat = jiffies + at91wdt_wdd.timeout * HZ;
setup_timer(&at91wdt_private.timer, at91_ping, 0);
mod_timer(&at91wdt_private.timer, jiffies + WDT_TIMEOUT);
pr_info("enabled (heartbeat=%d sec, nowayout=%d)\n",
- heartbeat, nowayout);
+ at91wdt_wdd.timeout, nowayout);
return 0;
}
diff --git a/drivers/watchdog/orion_wdt.c b/drivers/watchdog/orion_wdt.c
index c20f96b..14406e6 100644
--- a/drivers/watchdog/orion_wdt.c
+++ b/drivers/watchdog/orion_wdt.c
@@ -24,7 +24,6 @@
#include <linux/spinlock.h>
#include <linux/clk.h>
#include <linux/err.h>
-#include <linux/of.h>
#include <mach/bridge-regs.h>
/*
@@ -162,12 +161,14 @@ static int __devinit orion_wdt_probe(struct platform_device *pdev)
wdt_max_duration = WDT_MAX_CYCLE_COUNT / wdt_tclk;
- if ((heartbeat < 1) || (heartbeat > wdt_max_duration))
- heartbeat = wdt_max_duration;
-
- orion_wdt.timeout = heartbeat;
orion_wdt.min_timeout = 1;
orion_wdt.max_timeout = wdt_max_duration;
+ if ((heartbeat >= 1) && (heartbeat <= wdt_max_duration)) {
+ orion_wdt.timeout = heartbeat;
+ } else {
+ orion_wdt.timeout = wdt_max_duration;
+ watchdog_probe_dt_timeout(&orion_wdt, pdev->dev.of_node);
+ }
watchdog_set_nowayout(&orion_wdt, nowayout);
ret = watchdog_register_device(&orion_wdt);
@@ -177,7 +178,7 @@ static int __devinit orion_wdt_probe(struct platform_device *pdev)
}
pr_info("Initial timeout %d sec%s\n",
- heartbeat, nowayout ? ", nowayout" : "");
+ orion_wdt.timeout, nowayout ? ", nowayout" : "");
return 0;
}
--
1.7.11.3
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