[U-Boot] [PATCH] arm: socfpga: Change watchdog timeout

[Stefan Roese]

The current current watchdog timeout of 12 seconds is a bit small for
booting into Linux, especially when using a NFS based rootfs. So lets
change this timeout to a more defensive value of 30 seconds.

Also we now call the hw_watchdog_init() function so that we override
the value already configured from the Preloader.

Signed-off-by: Stefan Roese <sr at denx.de>
Cc: Vince Bridgers <vbridger at opensource.altera.com>
Cc: Dinh Nguyen <dinguyen at opensource.altera.com>
Cc: Chin Liang See <clsee at altera.com>
Cc: Marek Vasut <marex at denx.de>
Cc: Pavel Machek <pavel at denx.de>
---
 arch/arm/cpu/armv7/socfpga/misc.c | 9 +++++++++
 include/configs/socfpga_common.h  | 2 +-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/arm/cpu/armv7/socfpga/misc.c b/arch/arm/cpu/armv7/socfpga/misc.c
index 73cffd3..ed26645 100644
--- a/arch/arm/cpu/armv7/socfpga/misc.c
+++ b/arch/arm/cpu/armv7/socfpga/misc.c
@@ -9,6 +9,7 @@
 #include <altera.h>
 #include <miiphy.h>
 #include <netdev.h>
+#include <watchdog.h>
 #include <asm/arch/reset_manager.h>
 #include <asm/arch/system_manager.h>
 #include <asm/arch/dwmmc.h>
@@ -157,6 +158,14 @@ int arch_cpu_init(void)
 	 */
 #ifndef CONFIG_HW_WATCHDOG
 	socfpga_watchdog_reset();
+#else
+	/*
+	 * In case the watchdog is enabled, make sure to (re-)configure it
+	 * so that the defined timeout is valid. Otherwise the SPL (Preloader)
+	 * timeout value is still active which might be too short for Linux
+	 * booting.
+	 */
+	hw_watchdog_init();
 #endif
 	return 0;
 }
diff --git a/include/configs/socfpga_common.h b/include/configs/socfpga_common.h
index 6bb9473..6b1f967 100644
--- a/include/configs/socfpga_common.h
+++ b/include/configs/socfpga_common.h
@@ -139,7 +139,7 @@
 #define CONFIG_DESIGNWARE_WATCHDOG
 #define CONFIG_DW_WDT_BASE		SOCFPGA_L4WD0_ADDRESS
 #define CONFIG_DW_WDT_CLOCK_KHZ		25000
-#define CONFIG_HW_WATCHDOG_TIMEOUT_MS	12000
+#define CONFIG_HW_WATCHDOG_TIMEOUT_MS	30000
 #endif
 
 /*
-- 
2.2.1