RE: [PATCH] Add WDT support for OMAP3430

Add watchdog timer support for TI OMAP3430.

Fix clk_put functions mismatch in the release fn which would crash the kernel if
the WDT test is run multiple times with "CONFIG_WATCHDOG_NOWAYOUT" disabled.

Fix the shutdown function.Check for wdt users before calling disable.
Signed-off-by: Madhusudhan Chikkature <madhu.cr@ti.com>

Updated for path change to drivers/watchdog.
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/configs/omap_3430sdp_defconfig

@@ -595,6 +595,7 @@ CONFIG_WATCHDOG_NOWAYOUT=y
 # Watchdog Device Drivers
 #
 # CONFIG_SOFT_WATCHDOG is not set
+CONFIG_OMAP_WATCHDOG=y
 CONFIG_HW_RANDOM=y
 # CONFIG_NVRAM is not set
 # CONFIG_R3964 is not set

arch/arm/plat-omap/devices.c

@@ -437,7 +437,9 @@ static inline void omap_init_uwire(void) {}
 
 #if	defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 
-#ifdef CONFIG_ARCH_OMAP24XX
+#if defined(CONFIG_ARCH_OMAP34XX)
+#define	OMAP_WDT_BASE		0x48314000
+#elif defined(CONFIG_ARCH_OMAP24XX)
 
 #ifdef CONFIG_ARCH_OMAP2430
 /* WDT2 */

drivers/watchdog/Kconfig

@@ -173,10 +173,10 @@ config EP93XX_WATCHDOG
 
 config OMAP_WATCHDOG
 	tristate "OMAP Watchdog"
-	depends on ARCH_OMAP16XX || ARCH_OMAP24XX
+	depends on ARCH_OMAP16XX || ARCH_OMAP24XX || ARCH_OMAP34XX
 	help
-	  Support for TI OMAP1610/OMAP1710/OMAP2420 watchdog.  Say 'Y' here to
-	  enable the OMAP1610/OMAP1710 watchdog timer.
+	  Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430 watchdog.  Say 'Y'
+	  here to enable the OMAP1610/OMAP1710/OMAP2420/OMAP3430 watchdog timer.
 
 config PNX4008_WATCHDOG
 	tristate "PNX4008 Watchdog"