[people/ms/u-boot.git] / drivers / watchdog / bfin_wdt.c

/*
 * watchdog.c - driver for Blackfin on-chip watchdog
 *
 * Copyright (c) 2007-2009 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later.
 */

#include <common.h>
#include <watchdog.h>
#include <asm/blackfin.h>
#include <asm/clock.h>
#include <asm/mach-common/bits/watchdog.h>

void hw_watchdog_reset(void)
{
	bfin_write_WDOG_STAT(0);
}

void hw_watchdog_init(void)
{
	bfin_write_WDOG_CTL(WDDIS);
	SSYNC();
	bfin_write_WDOG_CNT(CONFIG_WATCHDOG_TIMEOUT_MSECS / 1000 * get_sclk());
	hw_watchdog_reset();
	bfin_write_WDOG_CTL(WDEN);
}
Commit	Line	Data
9171fc81 MF	1	/*
	2	* watchdog.c - driver for Blackfin on-chip watchdog
	3	*
313e8aac	4	* Copyright (c) 2007-2009 Analog Devices Inc.
9171fc81 MF	5	*
	6	* Licensed under the GPL-2 or later.
	7	*/
	8
	9	#include <common.h>
	10	#include <watchdog.h>
	11	#include <asm/blackfin.h>
0519e80d	12	#include <asm/clock.h>
e9a389a1	13	#include <asm/mach-common/bits/watchdog.h>
9171fc81	14
9171fc81 MF	15	void hw_watchdog_reset(void)
	16	{
	17	bfin_write_WDOG_STAT(0);
	18	}
	19
	20	void hw_watchdog_init(void)
	21	{
e9a389a1 SZ	22	bfin_write_WDOG_CTL(WDDIS);
	23	SSYNC();
	24	bfin_write_WDOG_CNT(CONFIG_WATCHDOG_TIMEOUT_MSECS / 1000 * get_sclk());
9171fc81	25	hw_watchdog_reset();
e9a389a1	26	bfin_write_WDOG_CTL(WDEN);
9171fc81	27	}