1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * drivers/watchdog/at91sam9_wdt.h
4  *
5  * Copyright (C) 2007 Andrew Victor
6  * Copyright (C) 2007 Atmel Corporation.
7  *
8  * Watchdog Timer (WDT) - System peripherals regsters.
9  * Based on AT91SAM9261 datasheet revision D.
10  *
11  */
12 
13 #ifndef AT91_WDT_H
14 #define AT91_WDT_H
15 
16 #define AT91_WDT_CR		0x00			/* Watchdog Control Register */
17 #define		AT91_WDT_WDRSTT		(1    << 0)		/* Restart */
18 #define		AT91_WDT_KEY		(0xa5 << 24)		/* KEY Password */
19 
20 #define AT91_WDT_MR		0x04			/* Watchdog Mode Register */
21 #define		AT91_WDT_WDV		(0xfff << 0)		/* Counter Value */
22 #define			AT91_WDT_SET_WDV(x)	((x) & AT91_WDT_WDV)
23 #define		AT91_WDT_WDFIEN		(1     << 12)		/* Fault Interrupt Enable */
24 #define		AT91_WDT_WDRSTEN	(1     << 13)		/* Reset Processor */
25 #define		AT91_WDT_WDRPROC	(1     << 14)		/* Timer Restart */
26 #define		AT91_WDT_WDDIS		(1     << 15)		/* Watchdog Disable */
27 #define		AT91_WDT_WDD		(0xfff << 16)		/* Delta Value */
28 #define			AT91_WDT_SET_WDD(x)	(((x) << 16) & AT91_WDT_WDD)
29 #define		AT91_WDT_WDDBGHLT	(1     << 28)		/* Debug Halt */
30 #define		AT91_WDT_WDIDLEHLT	(1     << 29)		/* Idle Halt */
31 
32 #define AT91_WDT_SR		0x08			/* Watchdog Status Register */
33 #define		AT91_WDT_WDUNF		(1 << 0)		/* Watchdog Underflow */
34 #define		AT91_WDT_WDERR		(1 << 1)		/* Watchdog Error */
35 
36 #endif
37