]> git.ipfire.org Git - people/ms/u-boot.git/blob - drivers/watchdog/bfin_wdt.c
ARM: Implement non-cached memory support
[people/ms/u-boot.git] / 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/clock.h>
13 #include <asm/mach-common/bits/watchdog.h>
14
15 void hw_watchdog_reset(void)
16 {
17 bfin_write_WDOG_STAT(0);
18 }
19
20 void hw_watchdog_init(void)
21 {
22 bfin_write_WDOG_CTL(WDDIS);
23 SSYNC();
24 bfin_write_WDOG_CNT(CONFIG_WATCHDOG_TIMEOUT_MSECS / 1000 * get_sclk());
25 hw_watchdog_reset();
26 bfin_write_WDOG_CTL(WDEN);
27 }