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sysmobts_v2: Enable the HW watchdog in the bootloader 

We want to deal/detect events like uboot getting stuck in the
ubi/ubifs code. Enable the watchdog feature of u-boot. We need
to start the watchdog once by ourselves and then trigger the
Davinci one. Once we have set the 60s it can not be changed
later on. This requires an updated kernel as well.

Fixes: SYS#374
This commit is contained in:
Holger Hans Peter Freyther 2014-11-20 17:05:16 +01:00 committed by Holger Hans Peter Freyther
parent 0a964871c7
commit 648cc337cd
2 changed files with 16 additions and 0 deletions
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10
board/davinci/sysmobts_v2/sysmobts_v2.c
View File

@ -32,6 +32,7 @@
#include <i2c.h>
#include <asm/arch/hardware.h>
#include <asm/arch/davinci_misc.h>
#include <asm/arch/timer_defs.h>
#include <asm/gpio.h>
#define DAVINCI_PLLM (0x01C40910) /* PLL 1 Multiplier */
@ -139,6 +140,9 @@ int board_init(void)
lpsc_on(DAVINCI_LPSC_TIMER1);
timer_init();
#ifdef CONFIG_HW_WATCHDOG
davinci_hw_watchdog_enable();
#endif
return(0);
}
@ -170,3 +174,9 @@ int misc_init_r(void)
return(0);
}
#ifdef CONFIG_HW_WATCHDOG
void hw_watchdog_reset(void)
{
davinci_hw_watchdog_reset();
}
#endif

6
include/configs/davinci_sysmobts_v2.h
View File

@ -203,5 +203,11 @@
#define CONFIG_CLOCKS
#endif
/* Enable the watchdog */
#define CONFIG_HW_WATCHDOG
#define CONFIG_SYS_WDTTIMERBASE 0x01c21C00
#define CONFIG_SYS_WDT_PERIOD_LOW 0x608f3d00 /* 60s */
#define CONFIG_SYS_WDT_PERIOD_HIGH 0x0
#endif /* __CONFIG_H */