From d0e932de7c8e46ade1994e03e864636db3922520 Mon Sep 17 00:00:00 2001
From: Stefan Roese <sr@denx.de>
Date: Fri, 19 Dec 2014 13:49:10 +0100
Subject: [PATCH] arm: socfpga: Change watchdog timeout
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@denx.de>
Cc: Vince Bridgers <vbridger@opensource.altera.com>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: Chin Liang See <clsee@altera.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Pavel Machek <pavel@denx.de>
---
arch/arm/cpu/armv7/socfpga/misc.c | 12 +++++++++++-
include/configs/socfpga_common.h | 2 +-
2 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/arch/arm/cpu/armv7/socfpga/misc.c b/arch/arm/cpu/armv7/socfpga/misc.c
index 73cffd3a8d..7873c38e2b 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>
@@ -150,14 +151,23 @@ static inline void socfpga_fpga_add(void) {}
int arch_cpu_init(void)
{
+#ifdef CONFIG_HW_WATCHDOG
+ /*
+ * In case the watchdog is enabled, make sure to (re-)configure it
+ * so that the defined timeout is valid. Otherwise the SPL (Perloader)
+ * timeout value is still active which might too short for Linux
+ * booting.
+ */
+ hw_watchdog_init();
+#else
/*
* If the HW watchdog is NOT enabled, make sure it is not running,
* for example because it was enabled in the preloader. This might
* trigger a watchdog-triggered reboot of Linux kernel later.
*/
-#ifndef CONFIG_HW_WATCHDOG
socfpga_watchdog_reset();
#endif
+
return 0;
}
diff --git a/include/configs/socfpga_common.h b/include/configs/socfpga_common.h
index 6bb9473c82..6b1f967c44 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
/*
--
2.39.5