mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 09:48:16 +00:00
43 lines
880 B
C
43 lines
880 B
C
/*
|
|
* Copyright (C) 2012 Samsung Electronics
|
|
* Minkyu Kang <mk7.kang@samsung.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/watchdog.h>
|
|
|
|
#define PRESCALER_VAL 255
|
|
|
|
void wdt_stop(void)
|
|
{
|
|
struct s5p_watchdog *wdt =
|
|
(struct s5p_watchdog *)samsung_get_base_watchdog();
|
|
unsigned int wtcon;
|
|
|
|
wtcon = readl(&wdt->wtcon);
|
|
wtcon &= ~(WTCON_EN | WTCON_INT | WTCON_RESET);
|
|
|
|
writel(wtcon, &wdt->wtcon);
|
|
}
|
|
|
|
void wdt_start(unsigned int timeout)
|
|
{
|
|
struct s5p_watchdog *wdt =
|
|
(struct s5p_watchdog *)samsung_get_base_watchdog();
|
|
unsigned int wtcon;
|
|
|
|
wdt_stop();
|
|
|
|
wtcon = readl(&wdt->wtcon);
|
|
wtcon |= (WTCON_EN | WTCON_CLK(WTCON_CLK_128));
|
|
wtcon &= ~WTCON_INT;
|
|
wtcon |= WTCON_RESET;
|
|
wtcon |= WTCON_PRESCALER(PRESCALER_VAL);
|
|
|
|
writel(timeout, &wdt->wtdat);
|
|
writel(timeout, &wdt->wtcnt);
|
|
writel(wtcon, &wdt->wtcon);
|
|
}
|