diff options
Diffstat (limited to 'arch/arm/mach-at91/include/mach/at91sam9_ddrsdr.h')
| -rw-r--r-- | arch/arm/mach-at91/include/mach/at91sam9_ddrsdr.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/include/mach/at91sam9_ddrsdr.h b/arch/arm/mach-at91/include/mach/at91sam9_ddrsdr.h new file mode 100644 index 00000000000..d27b15ba8eb --- /dev/null +++ b/arch/arm/mach-at91/include/mach/at91sam9_ddrsdr.h @@ -0,0 +1,130 @@ +/* + * Header file for the Atmel DDR/SDR SDRAM Controller + * + * Copyright (C) 2010 Atmel Corporation + * Nicolas Ferre <nicolas.ferre@atmel.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#ifndef AT91SAM9_DDRSDR_H +#define AT91SAM9_DDRSDR_H + +#define AT91_DDRSDRC_MR 0x00 /* Mode Register */ +#define AT91_DDRSDRC_MODE (0x7 << 0) /* Command Mode */ +#define AT91_DDRSDRC_MODE_NORMAL 0 +#define AT91_DDRSDRC_MODE_NOP 1 +#define AT91_DDRSDRC_MODE_PRECHARGE 2 +#define AT91_DDRSDRC_MODE_LMR 3 +#define AT91_DDRSDRC_MODE_REFRESH 4 +#define AT91_DDRSDRC_MODE_EXT_LMR 5 +#define AT91_DDRSDRC_MODE_DEEP 6 + +#define AT91_DDRSDRC_RTR 0x04 /* Refresh Timer Register */ +#define AT91_DDRSDRC_COUNT (0xfff << 0) /* Refresh Timer Counter */ + +#define AT91_DDRSDRC_CR 0x08 /* Configuration Register */ +#define AT91_DDRSDRC_NC (3 << 0) /* Number of Column Bits */ +#define AT91_DDRSDRC_NC_SDR8 (0 << 0) +#define AT91_DDRSDRC_NC_SDR9 (1 << 0) +#define AT91_DDRSDRC_NC_SDR10 (2 << 0) +#define AT91_DDRSDRC_NC_SDR11 (3 << 0) +#define AT91_DDRSDRC_NC_DDR9 (0 << 0) +#define AT91_DDRSDRC_NC_DDR10 (1 << 0) +#define AT91_DDRSDRC_NC_DDR11 (2 << 0) +#define AT91_DDRSDRC_NC_DDR12 (3 << 0) +#define AT91_DDRSDRC_NR (3 << 2) /* Number of Row Bits */ +#define AT91_DDRSDRC_NR_11 (0 << 2) +#define AT91_DDRSDRC_NR_12 (1 << 2) +#define AT91_DDRSDRC_NR_13 (2 << 2) +#define AT91_DDRSDRC_NR_14 (3 << 2) +#define AT91_DDRSDRC_CAS (7 << 4) /* CAS Latency */ +#define AT91_DDRSDRC_CAS_2 (2 << 4) +#define AT91_DDRSDRC_CAS_3 (3 << 4) +#define AT91_DDRSDRC_CAS_25 (6 << 4) +#define AT91_DDRSDRC_RST_DLL (1 << 7) /* Reset DLL */ +#define AT91_DDRSDRC_DICDS (1 << 8) /* Output impedance control */ +#define AT91_DDRSDRC_DIS_DLL (1 << 9) /* Disable DLL */ +#define AT91_DDRSDRC_OCD (1 << 12) /* Off-Chip Driver */ +#define AT91_DDRSDRC_DQMS (1 << 16) /* Mask Data is Shared */ +#define AT91_DDRSDRC_ACTBST (1 << 18) /* Active Bank X to Burst Stop Read Access Bank Y */ + +#define AT91_DDRSDRC_T0PR 0x0C /* Timing 0 Register */ +#define AT91_DDRSDRC_TRAS (0xf << 0) /* Active to Precharge delay */ +#define AT91_DDRSDRC_TRCD (0xf << 4) /* Row to Column delay */ +#define AT91_DDRSDRC_TWR (0xf << 8) /* Write recovery delay */ +#define AT91_DDRSDRC_TRC (0xf << 12) /* Row cycle delay */ +#define AT91_DDRSDRC_TRP (0xf << 16) /* Row precharge delay */ +#define AT91_DDRSDRC_TRRD (0xf << 20) /* Active BankA to BankB */ +#define AT91_DDRSDRC_TWTR (0x7 << 24) /* Internal Write to Read delay */ +#define AT91_DDRSDRC_RED_WRRD (0x1 << 27) /* Reduce Write to Read Delay */ +#define AT91_DDRSDRC_TMRD (0xf << 28) /* Load mode to active/refresh delay */ + +#define AT91_DDRSDRC_T1PR 0x10 /* Timing 1 Register */ +#define AT91_DDRSDRC_TRFC (0x1f << 0) /* Row Cycle Delay */ +#define AT91_DDRSDRC_TXSNR (0xff << 8) /* Exit self-refresh to non-read */ +#define AT91_DDRSDRC_TXSRD (0xff << 16) /* Exit self-refresh to read */ +#define AT91_DDRSDRC_TXP (0xf << 24) /* Exit power-down delay */ + +#define AT91_DDRSDRC_T2PR 0x14 /* Timing 2 Register */ +#define AT91_DDRSDRC_TXARD (0xf << 0) /* Exit active power down delay to read command in mode "Fast Exit" */ +#define AT91_DDRSDRC_TXARDS (0xf << 4) /* Exit active power down delay to read command in mode "Slow Exit" */ +#define AT91_DDRSDRC_TRPA (0xf << 8) /* Row Precharge All delay */ +#define AT91_DDRSDRC_TRTP (0x7 << 12) /* Read to Precharge delay */ + +#define AT91_DDRSDRC_LPR 0x1C /* Low Power Register */ +#define AT91_DDRSDRC_LPCB (3 << 0) /* Low-power Configurations */ +#define AT91_DDRSDRC_LPCB_DISABLE 0 +#define AT91_DDRSDRC_LPCB_SELF_REFRESH 1 +#define AT91_DDRSDRC_LPCB_POWER_DOWN 2 +#define AT91_DDRSDRC_LPCB_DEEP_POWER_DOWN 3 +#define AT91_DDRSDRC_CLKFR (1 << 2) /* Clock Frozen */ +#define AT91_DDRSDRC_PASR (7 << 4) /* Partial Array Self Refresh */ +#define AT91_DDRSDRC_TCSR (3 << 8) /* Temperature Compensated Self Refresh */ +#define AT91_DDRSDRC_DS (3 << 10) /* Drive Strength */ +#define AT91_DDRSDRC_TIMEOUT (3 << 12) /* Time to define when Low Power Mode is enabled */ +#define AT91_DDRSDRC_TIMEOUT_0_CLK_CYCLES (0 << 12) +#define AT91_DDRSDRC_TIMEOUT_64_CLK_CYCLES (1 << 12) +#define AT91_DDRSDRC_TIMEOUT_128_CLK_CYCLES (2 << 12) +#define AT91_DDRSDRC_APDE (1 << 16) /* Active power down exit time */ +#define AT91_DDRSDRC_UPD_MR (3 << 20) /* Update load mode register and extended mode register */ + +#define AT91_DDRSDRC_MDR 0x20 /* Memory Device Register */ +#define AT91_DDRSDRC_MD (3 << 0) /* Memory Device Type */ +#define AT91_DDRSDRC_MD_SDR 0 +#define AT91_DDRSDRC_MD_LOW_POWER_SDR 1 +#define AT91_DDRSDRC_MD_LOW_POWER_DDR 3 +#define AT91_DDRSDRC_MD_DDR2 6 +#define AT91_DDRSDRC_DBW (1 << 4) /* Data Bus Width */ +#define AT91_DDRSDRC_DBW_32BITS (0 << 4) +#define AT91_DDRSDRC_DBW_16BITS (1 << 4) + +#define AT91_DDRSDRC_DLL 0x24 /* DLL Information Register */ +#define AT91_DDRSDRC_MDINC (1 << 0) /* Master Delay increment */ +#define AT91_DDRSDRC_MDDEC (1 << 1) /* Master Delay decrement */ +#define AT91_DDRSDRC_MDOVF (1 << 2) /* Master Delay Overflow */ +#define AT91_DDRSDRC_MDVAL (0xff << 8) /* Master Delay value */ + +#define AT91_DDRSDRC_HS 0x2C /* High Speed Register */ +#define AT91_DDRSDRC_DIS_ATCP_RD (1 << 2) /* Anticip read access is disabled */ + +#define AT91_DDRSDRC_DELAY(n) (0x30 + (0x4 * (n))) /* Delay I/O Register n */ + +#define AT91_DDRSDRC_WPMR 0xE4 /* Write Protect Mode Register */ +#define AT91_DDRSDRC_WP (1 << 0) /* Write protect enable */ +#define AT91_DDRSDRC_WPKEY (0xffffff << 8) /* Write protect key */ +#define AT91_DDRSDRC_KEY (0x444452 << 8) /* Write protect key = "DDR" */ + +#define AT91_DDRSDRC_WPSR 0xE8 /* Write Protect Status Register */ +#define AT91_DDRSDRC_WPVS (1 << 0) /* Write protect violation status */ +#define AT91_DDRSDRC_WPVSRC (0xffff << 8) /* Write protect violation source */ + +/* Register access macros */ +#define at91_ramc_read(num, reg) \ + at91_sys_read(AT91_DDRSDRC##num + reg) +#define at91_ramc_write(num, reg, value) \ + at91_sys_write(AT91_DDRSDRC##num + reg, value) + +#endif |