arch/arm/include/asm/arch-at91/at91_rtt.h

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