Merge branch 'master' of git://git.denx.de/u-boot-nand-flash

[u-boot] / arch / powerpc / cpu / mpc8xxx / ddr / ddr2_dimm_params.c

diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/ddr2_dimm_params.c b/arch/powerpc/cpu/mpc8xxx/ddr/ddr2_dimm_params.c
index d9d0fa70eeb7d8be78af62d4fd1b1daac0e8ac03..e4d02e8f61b8d8a84053f09128c659f2ef9ac547 100644 (file)
--- a/arch/powerpc/cpu/mpc8xxx/ddr/ddr2_dimm_params.c
+++ b/arch/powerpc/cpu/mpc8xxx/ddr/ddr2_dimm_params.c
@@ -40,7 +40,7 @@ compute_ranksize(unsigned int mem_type, unsigned char row_dens)
        /* Bottom 5 bits up to the top. */
        bsize = ((row_dens >> 5) | ((row_dens & 31) << 3));
        bsize <<= 27ULL;
-       debug("DDR: DDR II rank density = 0x%08x\n", bsize);
+       debug("DDR: DDR II rank density = 0x%16llx\n", bsize);
 
        return bsize;
 }
@@ -175,8 +175,8 @@ determine_refresh_rate_ps(const unsigned int spd_refresh)
  * ordinal 2, ddr2_speed_bins[1] contains tCK for CL=3
  * Not certain if any good value exists for CL=2
  */
-                                /* CL2   CL3   CL4   CL5   CL6 */
-unsigned short ddr2_speed_bins[] = {   0, 5000, 3750, 3000, 2500 };
+                                /* CL2   CL3   CL4   CL5   CL6  CL7*/
+unsigned short ddr2_speed_bins[] = {   0, 5000, 3750, 3000, 2500, 1875 };
 
 unsigned int
 compute_derated_DDR2_CAS_latency(unsigned int mclk_ps)
@@ -250,24 +250,27 @@ ddr_compute_dimm_parameters(const ddr2_spd_eeprom_t *spd,
        pdimm->primary_sdram_width = spd->primw;
        pdimm->ec_sdram_width = spd->ecw;
 
-       /* FIXME: what about registered SO-DIMM? */
+       /* These are all the types defined by the JEDEC DDR2 SPD 1.3 spec */
        switch (spd->dimm_type) {
-       case 0x01:      /* RDIMM */
-       case 0x10:      /* Mini-RDIMM */
-               pdimm->registered_dimm = 1; /* register buffered */
+       case DDR2_SPD_DIMMTYPE_RDIMM:
+       case DDR2_SPD_DIMMTYPE_72B_SO_RDIMM:
+       case DDR2_SPD_DIMMTYPE_MINI_RDIMM:
+               /* Registered/buffered DIMMs */
+               pdimm->registered_dimm = 1;
                break;
 
-       case 0x02:      /* UDIMM */
-       case 0x04:      /* SO-DIMM */
-       case 0x08:      /* Micro-DIMM */
-       case 0x20:      /* Mini-UDIMM */
-               pdimm->registered_dimm = 0;     /* unbuffered */
+       case DDR2_SPD_DIMMTYPE_UDIMM:
+       case DDR2_SPD_DIMMTYPE_SO_DIMM:
+       case DDR2_SPD_DIMMTYPE_MICRO_DIMM:
+       case DDR2_SPD_DIMMTYPE_MINI_UDIMM:
+               /* Unbuffered DIMMs */
+               pdimm->registered_dimm = 0;
                break;
 
+       case DDR2_SPD_DIMMTYPE_72B_SO_CDIMM:
        default:
                printf("unknown dimm_type 0x%02X\n", spd->dimm_type);
                return 1;
-               break;
        }
 
        /* SDRAM device parameters */
@@ -283,57 +286,57 @@ ddr_compute_dimm_parameters(const ddr2_spd_eeprom_t *spd,
         * The SPD clk_cycle field (tCKmin) is measured in tenths of
         * nanoseconds and represented as BCD.
         */
-       pdimm->tCKmin_X_ps
+       pdimm->tckmin_x_ps
                = convert_bcd_tenths_to_cycle_time_ps(spd->clk_cycle);
-       pdimm->tCKmin_X_minus_1_ps
+       pdimm->tckmin_x_minus_1_ps
                = convert_bcd_tenths_to_cycle_time_ps(spd->clk_cycle2);
-       pdimm->tCKmin_X_minus_2_ps
+       pdimm->tckmin_x_minus_2_ps
                = convert_bcd_tenths_to_cycle_time_ps(spd->clk_cycle3);
 
-       pdimm->tCKmax_ps = convert_bcd_tenths_to_cycle_time_ps(spd->tckmax);
+       pdimm->tckmax_ps = convert_bcd_tenths_to_cycle_time_ps(spd->tckmax);
 
        /*
         * Compute CAS latencies defined by SPD
-        * The SPD caslat_X should have at least 1 and at most 3 bits set.
+        * The SPD caslat_x should have at least 1 and at most 3 bits set.
         *
         * If cas_lat after masking is 0, the __ilog2 function returns
         * 255 into the variable.   This behavior is abused once.
         */
-       pdimm->caslat_X  = __ilog2(spd->cas_lat);
-       pdimm->caslat_X_minus_1 = __ilog2(spd->cas_lat
-                                         & ~(1 << pdimm->caslat_X));
-       pdimm->caslat_X_minus_2 = __ilog2(spd->cas_lat
-                                         & ~(1 << pdimm->caslat_X)
-                                         & ~(1 << pdimm->caslat_X_minus_1));
+       pdimm->caslat_x  = __ilog2(spd->cas_lat);
+       pdimm->caslat_x_minus_1 = __ilog2(spd->cas_lat
+                                         & ~(1 << pdimm->caslat_x));
+       pdimm->caslat_x_minus_2 = __ilog2(spd->cas_lat
+                                         & ~(1 << pdimm->caslat_x)
+                                         & ~(1 << pdimm->caslat_x_minus_1));
 
        /* Compute CAS latencies below that defined by SPD */
        pdimm->caslat_lowest_derated
                = compute_derated_DDR2_CAS_latency(get_memory_clk_period_ps());
 
        /* Compute timing parameters */
-       pdimm->tRCD_ps = spd->trcd * 250;
-       pdimm->tRP_ps = spd->trp * 250;
-       pdimm->tRAS_ps = spd->tras * 1000;
+       pdimm->trcd_ps = spd->trcd * 250;
+       pdimm->trp_ps = spd->trp * 250;
+       pdimm->tras_ps = spd->tras * 1000;
 
-       pdimm->tWR_ps = spd->twr * 250;
-       pdimm->tWTR_ps = spd->twtr * 250;
-       pdimm->tRFC_ps = compute_trfc_ps_from_spd(spd->trctrfc_ext, spd->trfc);
+       pdimm->twr_ps = spd->twr * 250;
+       pdimm->twtr_ps = spd->twtr * 250;
+       pdimm->trfc_ps = compute_trfc_ps_from_spd(spd->trctrfc_ext, spd->trfc);
 
-       pdimm->tRRD_ps = spd->trrd * 250;
-       pdimm->tRC_ps = compute_trc_ps_from_spd(spd->trctrfc_ext, spd->trc);
+       pdimm->trrd_ps = spd->trrd * 250;
+       pdimm->trc_ps = compute_trc_ps_from_spd(spd->trctrfc_ext, spd->trc);
 
        pdimm->refresh_rate_ps = determine_refresh_rate_ps(spd->refresh);
 
-       pdimm->tIS_ps = convert_bcd_hundredths_to_cycle_time_ps(spd->ca_setup);
-       pdimm->tIH_ps = convert_bcd_hundredths_to_cycle_time_ps(spd->ca_hold);
-       pdimm->tDS_ps
+       pdimm->tis_ps = convert_bcd_hundredths_to_cycle_time_ps(spd->ca_setup);
+       pdimm->tih_ps = convert_bcd_hundredths_to_cycle_time_ps(spd->ca_hold);
+       pdimm->tds_ps
                = convert_bcd_hundredths_to_cycle_time_ps(spd->data_setup);
-       pdimm->tDH_ps
+       pdimm->tdh_ps
                = convert_bcd_hundredths_to_cycle_time_ps(spd->data_hold);
 
-       pdimm->tRTP_ps = spd->trtp * 250;
-       pdimm->tDQSQ_max_ps = spd->tdqsq * 10;
-       pdimm->tQHS_ps = spd->tqhs * 10;
+       pdimm->trtp_ps = spd->trtp * 250;
+       pdimm->tdqsq_max_ps = spd->tdqsq * 10;
+       pdimm->tqhs_ps = spd->tqhs * 10;
 
        return 0;
 }