1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * drivers/watchdog/at91sam9_wdt.h
5 * Copyright (C) 2007 Andrew Victor
6 * Copyright (C) 2007 Atmel Corporation.
8 * Watchdog Timer (WDT) - System peripherals regsters.
9 * Based on AT91SAM9261 datasheet revision D.
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 */
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 */
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 */