1 /* 2 * arch/arm/mach-at91/include/mach/at91rm9200_sdramc.h 3 * 4 * Copyright (C) 2005 Ivan Kokshaysky 5 * Copyright (C) SAN People 6 * 7 * Memory Controllers (SDRAMC only) - System peripherals registers. 8 * Based on AT91RM9200 datasheet revision E. 9 * 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. 14 */ 15 16 #ifndef AT91RM9200_SDRAMC_H 17 #define AT91RM9200_SDRAMC_H 18 19 /* SDRAM Controller registers */ 20 #define AT91RM9200_SDRAMC_MR 0x90 /* Mode Register */ 21 #define AT91RM9200_SDRAMC_MODE (0xf << 0) /* Command Mode */ 22 #define AT91RM9200_SDRAMC_MODE_NORMAL (0 << 0) 23 #define AT91RM9200_SDRAMC_MODE_NOP (1 << 0) 24 #define AT91RM9200_SDRAMC_MODE_PRECHARGE (2 << 0) 25 #define AT91RM9200_SDRAMC_MODE_LMR (3 << 0) 26 #define AT91RM9200_SDRAMC_MODE_REFRESH (4 << 0) 27 #define AT91RM9200_SDRAMC_DBW (1 << 4) /* Data Bus Width */ 28 #define AT91RM9200_SDRAMC_DBW_32 (0 << 4) 29 #define AT91RM9200_SDRAMC_DBW_16 (1 << 4) 30 31 #define AT91RM9200_SDRAMC_TR 0x94 /* Refresh Timer Register */ 32 #define AT91RM9200_SDRAMC_COUNT (0xfff << 0) /* Refresh Timer Count */ 33 34 #define AT91RM9200_SDRAMC_CR 0x98 /* Configuration Register */ 35 #define AT91RM9200_SDRAMC_NC (3 << 0) /* Number of Column Bits */ 36 #define AT91RM9200_SDRAMC_NC_8 (0 << 0) 37 #define AT91RM9200_SDRAMC_NC_9 (1 << 0) 38 #define AT91RM9200_SDRAMC_NC_10 (2 << 0) 39 #define AT91RM9200_SDRAMC_NC_11 (3 << 0) 40 #define AT91RM9200_SDRAMC_NR (3 << 2) /* Number of Row Bits */ 41 #define AT91RM9200_SDRAMC_NR_11 (0 << 2) 42 #define AT91RM9200_SDRAMC_NR_12 (1 << 2) 43 #define AT91RM9200_SDRAMC_NR_13 (2 << 2) 44 #define AT91RM9200_SDRAMC_NB (1 << 4) /* Number of Banks */ 45 #define AT91RM9200_SDRAMC_NB_2 (0 << 4) 46 #define AT91RM9200_SDRAMC_NB_4 (1 << 4) 47 #define AT91RM9200_SDRAMC_CAS (3 << 5) /* CAS Latency */ 48 #define AT91RM9200_SDRAMC_CAS_2 (2 << 5) 49 #define AT91RM9200_SDRAMC_TWR (0xf << 7) /* Write Recovery Delay */ 50 #define AT91RM9200_SDRAMC_TRC (0xf << 11) /* Row Cycle Delay */ 51 #define AT91RM9200_SDRAMC_TRP (0xf << 15) /* Row Precharge Delay */ 52 #define AT91RM9200_SDRAMC_TRCD (0xf << 19) /* Row to Column Delay */ 53 #define AT91RM9200_SDRAMC_TRAS (0xf << 23) /* Active to Precharge Delay */ 54 #define AT91RM9200_SDRAMC_TXSR (0xf << 27) /* Exit Self Refresh to Active Delay */ 55 56 #define AT91RM9200_SDRAMC_SRR 0x9c /* Self Refresh Register */ 57 #define AT91RM9200_SDRAMC_LPR 0xa0 /* Low Power Register */ 58 #define AT91RM9200_SDRAMC_IER 0xa4 /* Interrupt Enable Register */ 59 #define AT91RM9200_SDRAMC_IDR 0xa8 /* Interrupt Disable Register */ 60 #define AT91RM9200_SDRAMC_IMR 0xac /* Interrupt Mask Register */ 61 #define AT91RM9200_SDRAMC_ISR 0xb0 /* Interrupt Status Register */ 62 63 #endif 64