/*
- * Copyright 2008-2009 Freescale Semiconductor, Inc.
+ * Copyright 2008-2012 Freescale Semiconductor, Inc.
* Dave Liu <daveliu@freescale.com>
*
* calculate the organization and timing parameter
{
unsigned int retval;
unsigned int mtb_ps;
+ int ftb_10th_ps;
int i;
if (spd->mem_type) {
pdimm->ec_sdram_width = 0;
pdimm->data_width = pdimm->primary_sdram_width
+ pdimm->ec_sdram_width;
+ pdimm->device_width = 1 << ((spd->organization & 0x7) + 2);
/* These are the types defined by the JEDEC DDR3 SPD spec */
pdimm->mirrored_dimm = 0;
switch (spd->module_type & DDR3_SPD_MODULETYPE_MASK) {
case DDR3_SPD_MODULETYPE_RDIMM:
case DDR3_SPD_MODULETYPE_MINI_RDIMM:
+ case DDR3_SPD_MODULETYPE_72B_SO_RDIMM:
/* Registered/buffered DIMMs */
pdimm->registered_dimm = 1;
for (i = 0; i < 16; i += 2) {
case DDR3_SPD_MODULETYPE_SO_DIMM:
case DDR3_SPD_MODULETYPE_MICRO_DIMM:
case DDR3_SPD_MODULETYPE_MINI_UDIMM:
+ case DDR3_SPD_MODULETYPE_MINI_CDIMM:
+ case DDR3_SPD_MODULETYPE_72B_SO_UDIMM:
+ case DDR3_SPD_MODULETYPE_72B_SO_CDIMM:
+ case DDR3_SPD_MODULETYPE_LRDIMM:
+ case DDR3_SPD_MODULETYPE_16B_SO_DIMM:
+ case DDR3_SPD_MODULETYPE_32B_SO_DIMM:
/* Unbuffered DIMMs */
if (spd->mod_section.unbuffered.addr_mapping & 0x1)
pdimm->mirrored_dimm = 1;
pdimm->mtb_ps = mtb_ps;
/*
+ * FTB - fine timebase
+ * use 1/10th of ps as our unit to avoid floating point
+ * eg, 10 for 1ps, 25 for 2.5ps, 50 for 5ps
+ */
+ ftb_10th_ps =
+ ((spd->ftb_div & 0xf0) >> 4) * 10 / (spd->ftb_div & 0x0f);
+ pdimm->ftb_10th_ps = ftb_10th_ps;
+ /*
* sdram minimum cycle time
* we assume the MTB is 0.125ns
* eg:
- * tCK_min=15 MTB (1.875ns) ->DDR3-1066
+ * tck_min=15 MTB (1.875ns) ->DDR3-1066
* =12 MTB (1.5ns) ->DDR3-1333
* =10 MTB (1.25ns) ->DDR3-1600
*/
- pdimm->tCKmin_X_ps = spd->tCK_min * mtb_ps;
+ pdimm->tckmin_x_ps = spd->tck_min * mtb_ps +
+ (spd->fine_tck_min * ftb_10th_ps) / 10;
/*
* CAS latency supported
* bit5 - CL5
* bit18 - CL18
*/
- pdimm->caslat_X = ((spd->caslat_msb << 8) | spd->caslat_lsb) << 4;
+ pdimm->caslat_x = ((spd->caslat_msb << 8) | spd->caslat_lsb) << 4;
/*
* min CAS latency time
- * eg: tAA_min =
+ * eg: taa_min =
* DDR3-800D 100 MTB (12.5ns)
* DDR3-1066F 105 MTB (13.125ns)
* DDR3-1333H 108 MTB (13.5ns)
* DDR3-1600H 90 MTB (11.25ns)
*/
- pdimm->tAA_ps = spd->tAA_min * mtb_ps;
+ pdimm->taa_ps = spd->taa_min * mtb_ps +
+ (spd->fine_taa_min * ftb_10th_ps) / 10;
/*
* min write recovery time
* eg:
- * tWR_min = 120 MTB (15ns) -> all speed grades.
+ * twr_min = 120 MTB (15ns) -> all speed grades.
*/
- pdimm->tWR_ps = spd->tWR_min * mtb_ps;
+ pdimm->twr_ps = spd->twr_min * mtb_ps;
/*
* min RAS to CAS delay time
- * eg: tRCD_min =
+ * eg: trcd_min =
* DDR3-800 100 MTB (12.5ns)
* DDR3-1066F 105 MTB (13.125ns)
* DDR3-1333H 108 MTB (13.5ns)
* DDR3-1600H 90 MTB (11.25)
*/
- pdimm->tRCD_ps = spd->tRCD_min * mtb_ps;
+ pdimm->trcd_ps = spd->trcd_min * mtb_ps +
+ (spd->fine_trcd_min * ftb_10th_ps) / 10;
/*
* min row active to row active delay time
- * eg: tRRD_min =
+ * eg: trrd_min =
* DDR3-800(1KB page) 80 MTB (10ns)
* DDR3-1333(1KB page) 48 MTB (6ns)
*/
- pdimm->tRRD_ps = spd->tRRD_min * mtb_ps;
+ pdimm->trrd_ps = spd->trrd_min * mtb_ps;
/*
* min row precharge delay time
- * eg: tRP_min =
+ * eg: trp_min =
* DDR3-800D 100 MTB (12.5ns)
* DDR3-1066F 105 MTB (13.125ns)
* DDR3-1333H 108 MTB (13.5ns)
* DDR3-1600H 90 MTB (11.25ns)
*/
- pdimm->tRP_ps = spd->tRP_min * mtb_ps;
+ pdimm->trp_ps = spd->trp_min * mtb_ps +
+ (spd->fine_trp_min * ftb_10th_ps) / 10;
/* min active to precharge delay time
* eg: tRAS_min =
* DDR3-1333H 288 MTB (36ns)
* DDR3-1600H 280 MTB (35ns)
*/
- pdimm->tRAS_ps = (((spd->tRAS_tRC_ext & 0xf) << 8) | spd->tRAS_min_lsb)
+ pdimm->tras_ps = (((spd->tras_trc_ext & 0xf) << 8) | spd->tras_min_lsb)
* mtb_ps;
/*
* min active to actice/refresh delay time
* DDR3-1333H 396 MTB (49.5ns)
* DDR3-1600H 370 MTB (46.25ns)
*/
- pdimm->tRC_ps = (((spd->tRAS_tRC_ext & 0xf0) << 4) | spd->tRC_min_lsb)
- * mtb_ps;
+ pdimm->trc_ps = (((spd->tras_trc_ext & 0xf0) << 4) | spd->trc_min_lsb)
+ * mtb_ps + (spd->fine_trc_min * ftb_10th_ps) / 10;
/*
* min refresh recovery delay time
* eg: tRFC_min =
* 1Gb 880 MTB (110ns)
* 2Gb 1280 MTB (160ns)
*/
- pdimm->tRFC_ps = ((spd->tRFC_min_msb << 8) | spd->tRFC_min_lsb)
+ pdimm->trfc_ps = ((spd->trfc_min_msb << 8) | spd->trfc_min_lsb)
* mtb_ps;
/*
* min internal write to read command delay time
- * eg: tWTR_min = 40 MTB (7.5ns) - all speed bins.
+ * eg: twtr_min = 40 MTB (7.5ns) - all speed bins.
* tWRT is at least 4 mclk independent of operating freq.
*/
- pdimm->tWTR_ps = spd->tWTR_min * mtb_ps;
+ pdimm->twtr_ps = spd->twtr_min * mtb_ps;
/*
* min internal read to precharge command delay time
- * eg: tRTP_min = 40 MTB (7.5ns) - all speed bins.
+ * eg: trtp_min = 40 MTB (7.5ns) - all speed bins.
* tRTP is at least 4 mclk independent of operating freq.
*/
- pdimm->tRTP_ps = spd->tRTP_min * mtb_ps;
+ pdimm->trtp_ps = spd->trtp_min * mtb_ps;
/*
* Average periodic refresh interval
/*
* min four active window delay time
- * eg: tFAW_min =
+ * eg: tfaw_min =
* DDR3-800(1KB page) 320 MTB (40ns)
* DDR3-1066(1KB page) 300 MTB (37.5ns)
* DDR3-1333(1KB page) 240 MTB (30ns)
* DDR3-1600(1KB page) 240 MTB (30ns)
*/
- pdimm->tFAW_ps = (((spd->tFAW_msb & 0xf) << 8) | spd->tFAW_min)
+ pdimm->tfaw_ps = (((spd->tfaw_msb & 0xf) << 8) | spd->tfaw_min)
* mtb_ps;
return 0;
projects / platform / kernel / u-boot.git / blobdiff