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arm: socfpga: Change watchdog timeout

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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>
This commit is contained in:
Stefan Roese 2014-12-19 13:49:10 +01:00 • committed by Marek Vasut
parent d8bec60c1b
commit d0e932de7c
2 changed files with 12 additions and 2 deletions
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12
arch/arm/cpu/armv7/socfpga/misc.c
View file

@ -9,6 +9,7 @@
#include <altera.h> #include <altera.h>
#include <miiphy.h> #include <miiphy.h>
#include <netdev.h> #include <netdev.h>
#include <watchdog.h>
#include <asm/arch/reset_manager.h> #include <asm/arch/reset_manager.h>
#include <asm/arch/system_manager.h> #include <asm/arch/system_manager.h>
#include <asm/arch/dwmmc.h> #include <asm/arch/dwmmc.h>
@ -150,14 +151,23 @@ static inline void socfpga_fpga_add(void) {}
int arch_cpu_init(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, * If the HW watchdog is NOT enabled, make sure it is not running,
* for example because it was enabled in the preloader. This might * for example because it was enabled in the preloader. This might
* trigger a watchdog-triggered reboot of Linux kernel later. * trigger a watchdog-triggered reboot of Linux kernel later.
*/ */
#ifndef CONFIG_HW_WATCHDOG
socfpga_watchdog_reset(); socfpga_watchdog_reset();
#endif #endif
return 0; return 0;
} }

2
include/configs/socfpga_common.h
View file

@ -139,7 +139,7 @@
#define CONFIG_DESIGNWARE_WATCHDOG #define CONFIG_DESIGNWARE_WATCHDOG
#define CONFIG_DW_WDT_BASE SOCFPGA_L4WD0_ADDRESS #define CONFIG_DW_WDT_BASE SOCFPGA_L4WD0_ADDRESS
#define CONFIG_DW_WDT_CLOCK_KHZ 25000 #define CONFIG_DW_WDT_CLOCK_KHZ 25000
#define CONFIG_HW_WATCHDOG_TIMEOUT_MS 12000 #define CONFIG_HW_WATCHDOG_TIMEOUT_MS 30000
#endif #endif
/* /*