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>

diff --git a/Documentation/devicetree/bindings/watchdog/davinci-wdt.txt b/Documentation/devicetree/bindings/watchdog/davinci-wdt.txt
index e450134..e60b9a1 100644 (file)
--- 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 b69a0f7..af8f7c7 100644 (file)
--- 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 dbe2834..b1bae03 100644 (file)
--- 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 = {