drivers/watchdog/bfin_wdt.c

   1 /*
   2  * watchdog.c - driver for Blackfin on-chip watchdog
   3  *
   4  * Copyright (c) 2007-2009 Analog Devices Inc.
   5  *
   6  * Licensed under the GPL-2 or later.
   7  */
   8
   9 #include <common.h>
  10 #include <watchdog.h>
  11 #include <asm/blackfin.h>
  12 #include <asm/mach-common/bits/watchdog.h>
  13
  14 void hw_watchdog_reset(void)
  15 {
  16         bfin_write_WDOG_STAT(0);
  17 }
  18
  19 void hw_watchdog_init(void)
  20 {
  21         bfin_write_WDOG_CTL(WDDIS);
  22         SSYNC();
  23         bfin_write_WDOG_CNT(CONFIG_WATCHDOG_TIMEOUT_MSECS / 1000 * get_sclk());
  24         hw_watchdog_reset();
  25         bfin_write_WDOG_CTL(WDEN);
  26 }