2 * arch/arm/mach-at91/include/mach/at91_rtt.h
4 * Copyright (C) 2007 Andrew Victor
5 * Copyright (C) 2007 Atmel Corporation.
7 * Real-time Timer (RTT) - System peripherals regsters.
8 * Based on AT91SAM9261 datasheet revision D.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
19 #define AT91_RTT_MR 0x00 /* Real-time Mode Register */
20 #define AT91_RTT_RTPRES (0xffff << 0) /* Real-time Timer Prescaler Value */
21 #define AT91_RTT_ALMIEN (1 << 16) /* Alarm Interrupt Enable */
22 #define AT91_RTT_RTTINCIEN (1 << 17) /* Real Time Timer Increment Interrupt Enable */
23 #define AT91_RTT_RTTRST (1 << 18) /* Real Time Timer Restart */
25 #define AT91_RTT_AR 0x04 /* Real-time Alarm Register */
26 #define AT91_RTT_ALMV (0xffffffff) /* Alarm Value */
28 #define AT91_RTT_VR 0x08 /* Real-time Value Register */
29 #define AT91_RTT_CRTV (0xffffffff) /* Current Real-time Value */
31 #define AT91_RTT_SR 0x0c /* Real-time Status Register */
32 #define AT91_RTT_ALMS (1 << 0) /* Real-time Alarm Status */
33 #define AT91_RTT_RTTINC (1 << 1) /* Real-time Timer Increment */