1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * [origin: Linux kernel arch/arm/mach-at91/include/mach/at91_wdt.h]
4  *
5  * Copyright (C) 2008 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
6  * Copyright (C) 2007 Andrew Victor
7  * Copyright (C) 2018 Microchip Technology Inc.
8  *
9  * Watchdog Timer (WDT) - System peripherals regsters.
10  * Based on AT91SAM9261 datasheet revision D.
11  */
12 
13 #ifndef AT91_WDT_H
14 #define AT91_WDT_H
15 
16 #ifdef __ASSEMBLY__
17 
18 #define AT91_ASM_WDT_MR	(ATMEL_BASE_WDT +  0x04)
19 
20 #else
21 
22 typedef struct at91_wdt {
23 	u32	cr;
24 	u32	mr;
25 	u32	sr;
26 } at91_wdt_t;
27 
28 #endif
29 
30 /* Watchdog Control Register */
31 #define AT91_WDT_CR			0x00
32 #define AT91_WDT_CR_WDRSTT		1
33 #define AT91_WDT_CR_KEY			0xa5000000	/* KEY Password */
34 
35 /* Watchdog Mode Register*/
36 #define AT91_WDT_MR			0X04
37 #define AT91_WDT_MR_WDV(x)		(x & 0xfff)
38 #define AT91_WDT_MR_WDFIEN		0x00001000
39 #define AT91_WDT_MR_WDRSTEN		0x00002000
40 #define AT91_WDT_MR_WDRPROC		0x00004000
41 #define AT91_WDT_MR_WDDIS		0x00008000
42 #define AT91_WDT_MR_WDD(x)		((x & 0xfff) << 16)
43 #define AT91_WDT_MR_WDDBGHLT		0x10000000
44 #define AT91_WDT_MR_WDIDLEHLT		0x20000000
45 
46 #endif
47