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| author | Ivan Khoronzhuk <ivan.khoronzhuk@ti.com> | 2013-12-04 21:39:30 +0200 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2014-01-28 21:20:05 +0100 |
| commit | 8832b20093434514fda5e8a0c885270eda4fbf40 (patch) | |
| tree | f7c738b839bab14d086443d498e99a9683290a9e | |
| parent | 4fa5daa9c618e3411a351c326c34916b65ee7ae6 (diff) | |
| download | lwn-8832b20093434514fda5e8a0c885270eda4fbf40.tar.gz lwn-8832b20093434514fda5e8a0c885270eda4fbf40.zip | |
watchdog: davinci: reuse driver for keystone arch
The keystone arch uses the same IP watchdog, so add "ti,keystone-wdt"
compatible and correct identity.
The Keystone arch is using clocks in DT and source clock for watchdog
has to be specified, so add this to binding.
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| -rw-r--r-- | Documentation/devicetree/bindings/watchdog/davinci-wdt.txt | 12 | ||||
| -rw-r--r-- | drivers/watchdog/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/watchdog/davinci_wdt.c | 2 |
3 files changed, 13 insertions, 5 deletions
diff --git a/Documentation/devicetree/bindings/watchdog/davinci-wdt.txt b/Documentation/devicetree/bindings/watchdog/davinci-wdt.txt index e450134650bb..e60b9a13bdcb 100644 --- a/Documentation/devicetree/bindings/watchdog/davinci-wdt.txt +++ b/Documentation/devicetree/bindings/watchdog/davinci-wdt.txt @@ -1,11 +1,18 @@ -DaVinci Watchdog Timer (WDT) Controller +Texas Instruments DaVinci/Keystone Watchdog Timer (WDT) Controller Required properties: -- compatible : Should be "ti,davinci-wdt" +- compatible : Should be "ti,davinci-wdt", "ti,keystone-wdt" - reg : Should contain WDT registers location and length Optional properties: - timeout-sec : Contains the watchdog timeout in seconds +- clocks : the clock feeding the watchdog timer. + Needed if platform uses clocks. + See clock-bindings.txt + +Documentation: +Davinci DM646x - http://www.ti.com/lit/ug/spruer5b/spruer5b.pdf +Keystone - http://www.ti.com/lit/ug/sprugv5a/sprugv5a.pdf Examples: @@ -13,4 +20,5 @@ wdt: wdt@2320000 { compatible = "ti,davinci-wdt"; reg = <0x02320000 0x80>; timeout-sec = <30>; + clocks = <&clkwdtimer0>; }; diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index b69a0f763a6d..af8f7c75e03c 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -270,11 +270,11 @@ config IOP_WATCHDOG config DAVINCI_WATCHDOG tristate "DaVinci watchdog" - depends on ARCH_DAVINCI + depends on ARCH_DAVINCI || ARCH_KEYSTONE select WATCHDOG_CORE help Say Y here if to include support for the watchdog timer - in the DaVinci DM644x/DM646x processors. + in the DaVinci DM644x/DM646x or Keystone processors. To compile this driver as a module, choose M here: the module will be called davinci_wdt. diff --git a/drivers/watchdog/davinci_wdt.c b/drivers/watchdog/davinci_wdt.c index dbe28343e749..b1bae03742a9 100644 --- a/drivers/watchdog/davinci_wdt.c +++ b/drivers/watchdog/davinci_wdt.c @@ -143,7 +143,7 @@ static unsigned int davinci_wdt_get_timeleft(struct watchdog_device *wdd) static const struct watchdog_info davinci_wdt_info = { .options = WDIOF_KEEPALIVEPING, - .identity = "DaVinci Watchdog", + .identity = "DaVinci/Keystone Watchdog", }; static const struct watchdog_ops davinci_wdt_ops = { |