diff options
Diffstat (limited to 'include/imx_wdog.h')
| -rw-r--r-- | include/imx_wdog.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/include/imx_wdog.h b/include/imx_wdog.h new file mode 100644 index 0000000..40920f7 --- /dev/null +++ b/include/imx_wdog.h @@ -0,0 +1,39 @@ +/* + * Copyright (C) 2012 Freescale Semiconductor, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef _IMX_WDOG_H +#define _IMX_WDOG_H + +#include <asm/io.h> + +#define WDOGx_WMCR 0x8 +static inline void wdog_preconfig(int base_addr) +{ + /* + * From IC spec: + * The Power down Counter inside WDOG-1 will be enabled out of reset. + * This counter has a fixed time-out value of 16 seconds, after which + * it will drive the WDOG-1 signal low. + * + * To prevent this, the software must disable this counter by clearing + * the PDE bit of Watchdog Miscellaneous Control Register (WDOG_WMCR). + */ + writew(0, base_addr + WDOGx_WMCR); +} + +#endif |