1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (C) 2010 4 * Reinhard Meyer, reinhard.meyer@emk-elektronik.de 5 * 6 * Real-time Timer 7 * Based on AT91SAM9XE datasheet 8 */ 9 10 #ifndef AT91_RTT_H 11 #define AT91_RTT_H 12 13 #ifndef __ASSEMBLY__ 14 15 typedef struct at91_rtt { 16 u32 mr; /* Mode Register RW 0x00008000 */ 17 u32 ar; /* Alarm Register RW 0xFFFFFFFF */ 18 u32 vr; /* Value Register RO 0x00000000 */ 19 u32 sr; /* Status Register RO 0x00000000 */ 20 } at91_rtt_t; 21 22 #endif /* __ASSEMBLY__ */ 23 24 #define AT91_RTT_MR_RTPRES 0x0000ffff 25 #define AT91_RTT_MR_ALMIEN 0x00010000 26 #define AT91_RTT_RTTINCIEN 0x00020000 27 #define AT91_RTT_RTTRST 0x00040000 28 29 #define AT91_RTT_SR_ALMS 0x00000001 30 #define AT91_RTT_SR_RTTINC 0x00000002 31 32 #endif 33