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| author | Marcus Folkesson <marcus.folkesson@gmail.com> | 2018-02-08 14:11:08 +0100 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2018-03-03 17:04:12 +0100 |
| commit | 2b77f0083a7c2e57ecc38d82b11213dc51f733c8 (patch) | |
| tree | 52b660d5355799b9a7d4515279e10a38847296e6 | |
| parent | watchdog: hpwdt: Remove legacy NMI sourcing. (diff) | |
| download | linux-2b77f0083a7c2e57ecc38d82b11213dc51f733c8.tar.xz linux-2b77f0083a7c2e57ecc38d82b11213dc51f733c8.zip | |
watchdog: imx2_wdt: allow setting timeout in devicetree
By following best practice described in
Documentation/watchdog/watchdog-kernel-api.txt, it also let us to set
timout-sec property in devicetree.
Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| -rw-r--r-- | Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.txt | 2 | ||||
| -rw-r--r-- | drivers/watchdog/imx2_wdt.c | 8 |
2 files changed, 4 insertions, 6 deletions
diff --git a/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.txt b/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.txt index 107280ef0025..adc6b76fcb3a 100644 --- a/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.txt +++ b/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.txt @@ -11,6 +11,7 @@ Optional properties: detail please see: Documentation/devicetree/bindings/regmap/regmap.txt. - fsl,ext-reset-output: If present the watchdog device is configured to assert its external reset (WDOG_B) instead of issuing a software reset. +- timeout-sec : Contains the watchdog timeout in seconds Examples: @@ -19,4 +20,5 @@ wdt@73f98000 { reg = <0x73f98000 0x4000>; interrupts = <58>; big-endian; + timeout-sec = <20>; }; diff --git a/drivers/watchdog/imx2_wdt.c b/drivers/watchdog/imx2_wdt.c index 518dfa1047cb..f07850d2c977 100644 --- a/drivers/watchdog/imx2_wdt.c +++ b/drivers/watchdog/imx2_wdt.c @@ -76,7 +76,7 @@ MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); -static unsigned timeout = IMX2_WDT_DEFAULT_TIME; +static unsigned timeout; module_param(timeout, uint, 0); MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds (default=" __MODULE_STRING(IMX2_WDT_DEFAULT_TIME) ")"); @@ -281,6 +281,7 @@ static int __init imx2_wdt_probe(struct platform_device *pdev) wdog->info = &imx2_wdt_info; wdog->ops = &imx2_wdt_ops; wdog->min_timeout = 1; + wdog->timeout = IMX2_WDT_DEFAULT_TIME; wdog->max_hw_heartbeat_ms = IMX2_WDT_MAX_TIME * 1000; wdog->parent = &pdev->dev; @@ -299,11 +300,6 @@ static int __init imx2_wdt_probe(struct platform_device *pdev) wdev->ext_reset = of_property_read_bool(pdev->dev.of_node, "fsl,ext-reset-output"); - wdog->timeout = clamp_t(unsigned, timeout, 1, IMX2_WDT_MAX_TIME); - if (wdog->timeout != timeout) - dev_warn(&pdev->dev, "Initial timeout out of range! Clamped from %u to %u\n", - timeout, wdog->timeout); - platform_set_drvdata(pdev, wdog); watchdog_set_drvdata(wdog, wdev); watchdog_set_nowayout(wdog, nowayout); |