1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0+ */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * linux/drivers/char/watchdog/omap_wdt.h 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * BRIEF MODULE DESCRIPTION 6*4882a593Smuzhiyun * OMAP Watchdog timer register definitions 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun * Copyright (C) 2004 Texas Instruments. 9*4882a593Smuzhiyun */ 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #ifndef _OMAP_WATCHDOG_H 12*4882a593Smuzhiyun #define _OMAP_WATCHDOG_H 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun #define OMAP_WATCHDOG_REV (0x00) 15*4882a593Smuzhiyun #define OMAP_WATCHDOG_SYS_CONFIG (0x10) 16*4882a593Smuzhiyun #define OMAP_WATCHDOG_STATUS (0x14) 17*4882a593Smuzhiyun #define OMAP_WATCHDOG_CNTRL (0x24) 18*4882a593Smuzhiyun #define OMAP_WATCHDOG_CRR (0x28) 19*4882a593Smuzhiyun #define OMAP_WATCHDOG_LDR (0x2c) 20*4882a593Smuzhiyun #define OMAP_WATCHDOG_TGR (0x30) 21*4882a593Smuzhiyun #define OMAP_WATCHDOG_WPS (0x34) 22*4882a593Smuzhiyun #define OMAP_WATCHDOG_SPR (0x48) 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun /* Using the prescaler, the OMAP watchdog could go for many 25*4882a593Smuzhiyun * months before firing. These limits work without scaling, 26*4882a593Smuzhiyun * with the 60 second default assumed by most tools and docs. 27*4882a593Smuzhiyun */ 28*4882a593Smuzhiyun #define TIMER_MARGIN_MAX (24 * 60 * 60) /* 1 day */ 29*4882a593Smuzhiyun #define TIMER_MARGIN_DEFAULT 60 /* 60 secs */ 30*4882a593Smuzhiyun #define TIMER_MARGIN_MIN 1 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun #define PTV 0 /* prescale */ 33*4882a593Smuzhiyun #define GET_WLDR_VAL(secs) (0xffffffff - ((secs) * (32768/(1<<PTV))) + 1) 34*4882a593Smuzhiyun #define GET_WCCR_SECS(val) ((0xffffffff - (val) + 1) / (32768/(1<<PTV))) 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun #endif /* _OMAP_WATCHDOG_H */ 37