diff options
Diffstat (limited to 'include/asm-blackfin/mach-bf548/mem_init.h')
| -rw-r--r-- | include/asm-blackfin/mach-bf548/mem_init.h | 62 |
1 files changed, 61 insertions, 1 deletions
diff --git a/include/asm-blackfin/mach-bf548/mem_init.h b/include/asm-blackfin/mach-bf548/mem_init.h index 0cb279e973d7..befc2903d5a5 100644 --- a/include/asm-blackfin/mach-bf548/mem_init.h +++ b/include/asm-blackfin/mach-bf548/mem_init.h @@ -28,8 +28,68 @@ * If not, write to the Free Software Foundation, * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#define MIN_DDR_SCLK(x) (x*(CONFIG_SCLK_HZ/1000/1000)/1000 + 1) + +#if (CONFIG_MEM_MT46V32M16_6T) +#define DDR_SIZE DEVSZ_512 +#define DDR_WIDTH DEVWD_16 + +#define DDR_tRC DDR_TRC(MIN_DDR_SCLK(60)) +#define DDR_tRAS DDR_TRAS(MIN_DDR_SCLK(42)) +#define DDR_tRP DDR_TRP(MIN_DDR_SCLK(15)) +#define DDR_tRFC DDR_TRFC(MIN_DDR_SCLK(72)) +#define DDR_tREFI DDR_TREFI(MIN_DDR_SCLK(7800)) + +#define DDR_tRCD DDR_TRCD(MIN_DDR_SCLK(15)) +#define DDR_tWTR DDR_TWTR(1) +#define DDR_tMRD DDR_TMRD(MIN_DDR_SCLK(12)) +#define DDR_tWR DDR_TWR(MIN_DDR_SCLK(15)) +#endif + +#if (CONFIG_MEM_MT46V32M16_5B) +#define DDR_SIZE DEVSZ_512 +#define DDR_WIDTH DEVWD_16 + +#define DDR_tRC DDR_TRC(MIN_DDR_SCLK(55)) +#define DDR_tRAS DDR_TRAS(MIN_DDR_SCLK(40)) +#define DDR_tRP DDR_TRP(MIN_DDR_SCLK(15)) +#define DDR_tRFC DDR_TRFC(MIN_DDR_SCLK(70)) +#define DDR_tREFI DDR_TREFI(MIN_DDR_SCLK(7800)) + +#define DDR_tRCD DDR_TRCD(MIN_DDR_SCLK(15)) +#define DDR_tWTR DDR_TWTR(2) +#define DDR_tMRD DDR_TMRD(MIN_DDR_SCLK(10)) +#define DDR_tWR DDR_TWR(MIN_DDR_SCLK(15)) +#endif + +#if (CONFIG_MEM_GENERIC_BOARD) +#define DDR_SIZE DEVSZ_512 +#define DDR_WIDTH DEVWD_16 + +#define DDR_tRCD DDR_TRCD(3) +#define DDR_tWTR DDR_TWTR(2) +#define DDR_tWR DDR_TWR(2) +#define DDR_tMRD DDR_TMRD(2) +#define DDR_tRP DDR_TRP(3) +#define DDR_tRAS DDR_TRAS(7) +#define DDR_tRC DDR_TRC(10) +#define DDR_tRFC DDR_TRFC(12) +#define DDR_tREFI DDR_TREFI(1288) +#endif + +#if (CONFIG_SCLK_HZ <= 133333333) +#define DDR_CL CL_2 +#elif (CONFIG_SCLK_HZ <= 166666666) +#define DDR_CL CL_2_5 +#else +#define DDR_CL CL_3 +#endif + +#define mem_DDRCTL0 (DDR_tRP | DDR_tRAS | DDR_tRC | DDR_tRFC | DDR_tREFI) +#define mem_DDRCTL1 (DDR_DATWIDTH | EXTBANK_1 | DDR_SIZE | DDR_WIDTH | DDR_tWTR \ + | DDR_tMRD | DDR_tWR | DDR_tRCD) +#define mem_DDRCTL2 DDR_CL -#if (CONFIG_MEM_MT46V32M16) #if defined CONFIG_CLKIN_HALF #define CLKIN_HALF 1 |