diff options
Diffstat (limited to 'arch/arm/mach-at91/include/mach/at91cap9_ddrsdr.h')
| -rw-r--r-- | arch/arm/mach-at91/include/mach/at91cap9_ddrsdr.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/include/mach/at91cap9_ddrsdr.h b/arch/arm/mach-at91/include/mach/at91cap9_ddrsdr.h new file mode 100644 index 00000000..976f4a6c --- /dev/null +++ b/arch/arm/mach-at91/include/mach/at91cap9_ddrsdr.h @@ -0,0 +1,108 @@ +/* + * arch/arm/mach-at91/include/mach/at91cap9_ddrsdr.h + * + * (C) 2008 Andrew Victor + * + * DDR/SDR Controller (DDRSDRC) - System peripherals registers. + * Based on AT91CAP9 datasheet revision B. + * + * 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 AT91CAP9_DDRSDR_H +#define AT91CAP9_DDRSDR_H + +#define AT91_DDRSDRC_MR 0x00 /* Mode Register */ +#define AT91_DDRSDRC_MODE (0xf << 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_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_DLL (1 << 7) /* Reset DLL */ +#define AT91_DDRSDRC_DICDS (1 << 8) /* Output impedance control */ + +#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 (1 << 24) /* Internal 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_LPR 0x18 /* 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_MDR 0x1C /* 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_DDR 2 +#define AT91_DDRSDRC_MD_LOW_POWER_DDR 3 + +#define AT91_DDRSDRC_DLLR 0x20 /* 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_SDCOVF (1 << 3) /* Slave Delay Correction Overflow */ +#define AT91_DDRSDRC_SDCUDF (1 << 4) /* Slave Delay Correction Underflow */ +#define AT91_DDRSDRC_SDERF (1 << 5) /* Slave Delay Correction error */ +#define AT91_DDRSDRC_MDVAL (0xff << 8) /* Master Delay value */ +#define AT91_DDRSDRC_SDVAL (0xff << 16) /* Slave Delay value */ +#define AT91_DDRSDRC_SDCVAL (0xff << 24) /* Slave Delay Correction value */ + +/* 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 |