+// SPDX-License-Identifier: GPL-2.0
/*
- * Copyright 2008-2012 Freescale Semiconductor, Inc.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * Version 2 as published by the Free Software Foundation.
+ * Copyright 2008-2016 Freescale Semiconductor, Inc.
+ * Copyright 2017-2021 NXP Semiconductor
*/
#include <common.h>
#include <fsl_ddr_sdram.h>
+#include <log.h>
+#include <asm/bitops.h>
#include <fsl_ddr.h>
-#if defined(CONFIG_SYS_FSL_DDR3)
+#if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
static unsigned int
-compute_cas_latency_ddr3(const dimm_params_t *dimm_params,
- common_timing_params_t *outpdimm,
- unsigned int number_of_dimms)
+compute_cas_latency(const unsigned int ctrl_num,
+ const dimm_params_t *dimm_params,
+ common_timing_params_t *outpdimm,
+ unsigned int number_of_dimms)
{
unsigned int i;
- unsigned int taamin_ps = 0;
- unsigned int tckmin_x_ps = 0;
unsigned int common_caslat;
unsigned int caslat_actual;
unsigned int retry = 16;
- unsigned int tmp;
- const unsigned int mclk_ps = get_memory_clk_period_ps();
+ unsigned int tmp = ~0;
+ unsigned int mclk_ps = get_memory_clk_period_ps(ctrl_num);
+#ifdef CONFIG_SYS_FSL_DDR3
+ const unsigned int taamax = 20000;
+#else
+ const unsigned int taamax = 18000;
+#endif
/* compute the common CAS latency supported between slots */
- tmp = dimm_params[0].caslat_x;
- for (i = 1; i < number_of_dimms; i++) {
+ for (i = 0; i < number_of_dimms; i++) {
if (dimm_params[i].n_ranks)
tmp &= dimm_params[i].caslat_x;
}
common_caslat = tmp;
- /* compute the max tAAmin tCKmin between slots */
- for (i = 0; i < number_of_dimms; i++) {
- taamin_ps = max(taamin_ps, dimm_params[i].taa_ps);
- tckmin_x_ps = max(tckmin_x_ps, dimm_params[i].tckmin_x_ps);
+ if (!mclk_ps) {
+ printf("DDR clock (MCLK cycle was 0 ps), So setting it to slowest DIMM(s) (tCKmin %u ps).\n",
+ outpdimm->tckmin_x_ps);
+ mclk_ps = outpdimm->tckmin_x_ps;
}
+
/* validate if the memory clk is in the range of dimms */
- if (mclk_ps < tckmin_x_ps) {
+ if (mclk_ps < outpdimm->tckmin_x_ps) {
printf("DDR clock (MCLK cycle %u ps) is faster than "
"the slowest DIMM(s) (tCKmin %u ps) can support.\n",
- mclk_ps, tckmin_x_ps);
+ mclk_ps, outpdimm->tckmin_x_ps);
+ }
+#ifdef CONFIG_SYS_FSL_DDR4
+ if (mclk_ps > outpdimm->tckmax_ps) {
+ printf("DDR clock (MCLK cycle %u ps) is slower than DIMM(s) (tCKmax %u ps) can support.\n",
+ mclk_ps, outpdimm->tckmax_ps);
}
+#endif
/* determine the acutal cas latency */
- caslat_actual = (taamin_ps + mclk_ps - 1) / mclk_ps;
+ caslat_actual = (outpdimm->taamin_ps + mclk_ps - 1) / mclk_ps;
/* check if the dimms support the CAS latency */
while (!(common_caslat & (1 << caslat_actual)) && retry > 0) {
caslat_actual++;
}
/* once the caculation of caslat_actual is completed
* we must verify that this CAS latency value does not
- * exceed tAAmax, which is 20 ns for all DDR3 speed grades
+ * exceed tAAmax, which is 20 ns for all DDR3 speed grades,
+ * 18ns for all DDR4 speed grades.
*/
- if (caslat_actual * mclk_ps > 20000) {
- printf("The choosen cas latency %d is too large\n",
- caslat_actual);
+ if (caslat_actual * mclk_ps > taamax) {
+ printf("The chosen cas latency %d is too large\n",
+ caslat_actual);
}
- outpdimm->lowest_common_SPD_caslat = caslat_actual;
+ outpdimm->lowest_common_spd_caslat = caslat_actual;
+ debug("lowest_common_spd_caslat is 0x%x\n", caslat_actual);
+
+ return 0;
+}
+#else /* for DDR1 and DDR2 */
+static unsigned int
+compute_cas_latency(const unsigned int ctrl_num,
+ const dimm_params_t *dimm_params,
+ common_timing_params_t *outpdimm,
+ unsigned int number_of_dimms)
+{
+ int i;
+ const unsigned int mclk_ps = get_memory_clk_period_ps(ctrl_num);
+ unsigned int lowest_good_caslat;
+ unsigned int not_ok;
+ unsigned int temp1, temp2;
+
+ debug("using mclk_ps = %u\n", mclk_ps);
+ if (mclk_ps > outpdimm->tckmax_ps) {
+ printf("Warning: DDR clock (%u ps) is slower than DIMM(s) (tCKmax %u ps)\n",
+ mclk_ps, outpdimm->tckmax_ps);
+ }
+
+ /*
+ * Compute a CAS latency suitable for all DIMMs
+ *
+ * Strategy for SPD-defined latencies: compute only
+ * CAS latency defined by all DIMMs.
+ */
+
+ /*
+ * Step 1: find CAS latency common to all DIMMs using bitwise
+ * operation.
+ */
+ temp1 = 0xFF;
+ for (i = 0; i < number_of_dimms; i++) {
+ if (dimm_params[i].n_ranks) {
+ temp2 = 0;
+ temp2 |= 1 << dimm_params[i].caslat_x;
+ temp2 |= 1 << dimm_params[i].caslat_x_minus_1;
+ temp2 |= 1 << dimm_params[i].caslat_x_minus_2;
+ /*
+ * If there was no entry for X-2 (X-1) in
+ * the SPD, then caslat_x_minus_2
+ * (caslat_x_minus_1) contains either 255 or
+ * 0xFFFFFFFF because that's what the glorious
+ * __ilog2 function returns for an input of 0.
+ * On 32-bit PowerPC, left shift counts with bit
+ * 26 set (that the value of 255 or 0xFFFFFFFF
+ * will have), cause the destination register to
+ * be 0. That is why this works.
+ */
+ temp1 &= temp2;
+ }
+ }
+
+ /*
+ * Step 2: check each common CAS latency against tCK of each
+ * DIMM's SPD.
+ */
+ lowest_good_caslat = 0;
+ temp2 = 0;
+ while (temp1) {
+ not_ok = 0;
+ temp2 = __ilog2(temp1);
+ debug("checking common caslat = %u\n", temp2);
+
+ /* Check if this CAS latency will work on all DIMMs at tCK. */
+ for (i = 0; i < number_of_dimms; i++) {
+ if (!dimm_params[i].n_ranks)
+ continue;
+
+ if (dimm_params[i].caslat_x == temp2) {
+ if (mclk_ps >= dimm_params[i].tckmin_x_ps) {
+ debug("CL = %u ok on DIMM %u at tCK=%u ps with tCKmin_X_ps of %u\n",
+ temp2, i, mclk_ps,
+ dimm_params[i].tckmin_x_ps);
+ continue;
+ } else {
+ not_ok++;
+ }
+ }
+
+ if (dimm_params[i].caslat_x_minus_1 == temp2) {
+ unsigned int tckmin_x_minus_1_ps
+ = dimm_params[i].tckmin_x_minus_1_ps;
+ if (mclk_ps >= tckmin_x_minus_1_ps) {
+ debug("CL = %u ok on DIMM %u at tCK=%u ps with tckmin_x_minus_1_ps of %u\n",
+ temp2, i, mclk_ps,
+ tckmin_x_minus_1_ps);
+ continue;
+ } else {
+ not_ok++;
+ }
+ }
+
+ if (dimm_params[i].caslat_x_minus_2 == temp2) {
+ unsigned int tckmin_x_minus_2_ps
+ = dimm_params[i].tckmin_x_minus_2_ps;
+ if (mclk_ps >= tckmin_x_minus_2_ps) {
+ debug("CL = %u ok on DIMM %u at tCK=%u ps with tckmin_x_minus_2_ps of %u\n",
+ temp2, i, mclk_ps,
+ tckmin_x_minus_2_ps);
+ continue;
+ } else {
+ not_ok++;
+ }
+ }
+ }
+
+ if (!not_ok)
+ lowest_good_caslat = temp2;
+
+ temp1 &= ~(1 << temp2);
+ }
+
+ debug("lowest common SPD-defined CAS latency = %u\n",
+ lowest_good_caslat);
+ outpdimm->lowest_common_spd_caslat = lowest_good_caslat;
+
+
+ /*
+ * Compute a common 'de-rated' CAS latency.
+ *
+ * The strategy here is to find the *highest* dereated cas latency
+ * with the assumption that all of the DIMMs will support a dereated
+ * CAS latency higher than or equal to their lowest dereated value.
+ */
+ temp1 = 0;
+ for (i = 0; i < number_of_dimms; i++)
+ temp1 = max(temp1, dimm_params[i].caslat_lowest_derated);
+
+ outpdimm->highest_common_derated_caslat = temp1;
+ debug("highest common dereated CAS latency = %u\n", temp1);
return 0;
}
* by dimm_params.
*/
unsigned int
-compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params,
+compute_lowest_common_dimm_parameters(const unsigned int ctrl_num,
+ const dimm_params_t *dimm_params,
common_timing_params_t *outpdimm,
const unsigned int number_of_dimms)
{
unsigned int tckmin_x_ps = 0;
unsigned int tckmax_ps = 0xFFFFFFFF;
- unsigned int tckmax_max_ps = 0;
unsigned int trcd_ps = 0;
unsigned int trp_ps = 0;
unsigned int tras_ps = 0;
+#if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
+ unsigned int taamin_ps = 0;
+#endif
+#ifdef CONFIG_SYS_FSL_DDR4
+ unsigned int twr_ps = 15000;
+ unsigned int trfc1_ps = 0;
+ unsigned int trfc2_ps = 0;
+ unsigned int trfc4_ps = 0;
+ unsigned int trrds_ps = 0;
+ unsigned int trrdl_ps = 0;
+ unsigned int tccdl_ps = 0;
+ unsigned int trfc_slr_ps = 0;
+#else
unsigned int twr_ps = 0;
unsigned int twtr_ps = 0;
unsigned int trfc_ps = 0;
unsigned int trrd_ps = 0;
+ unsigned int trtp_ps = 0;
+#endif
unsigned int trc_ps = 0;
unsigned int refresh_rate_ps = 0;
unsigned int extended_op_srt = 1;
+#if defined(CONFIG_SYS_FSL_DDR1) || defined(CONFIG_SYS_FSL_DDR2)
unsigned int tis_ps = 0;
unsigned int tih_ps = 0;
unsigned int tds_ps = 0;
unsigned int tdh_ps = 0;
- unsigned int trtp_ps = 0;
unsigned int tdqsq_max_ps = 0;
unsigned int tqhs_ps = 0;
-
+#endif
unsigned int temp1, temp2;
unsigned int additive_latency = 0;
-#if !defined(CONFIG_SYS_FSL_DDR3)
- const unsigned int mclk_ps = get_memory_clk_period_ps();
- unsigned int lowest_good_caslat;
- unsigned int not_ok;
-
- debug("using mclk_ps = %u\n", mclk_ps);
-#endif
temp1 = 0;
for (i = 0; i < number_of_dimms; i++) {
* Find minimum tckmax_ps to find fastest slow speed,
* i.e., this is the slowest the whole system can go.
*/
- tckmax_ps = min(tckmax_ps, dimm_params[i].tckmax_ps);
-
- /* Either find maximum value to determine slowest
- * speed, delay, time, period, etc */
- tckmin_x_ps = max(tckmin_x_ps, dimm_params[i].tckmin_x_ps);
- tckmax_max_ps = max(tckmax_max_ps, dimm_params[i].tckmax_ps);
- trcd_ps = max(trcd_ps, dimm_params[i].trcd_ps);
- trp_ps = max(trp_ps, dimm_params[i].trp_ps);
- tras_ps = max(tras_ps, dimm_params[i].tras_ps);
- twr_ps = max(twr_ps, dimm_params[i].twr_ps);
- twtr_ps = max(twtr_ps, dimm_params[i].twtr_ps);
- trfc_ps = max(trfc_ps, dimm_params[i].trfc_ps);
- trrd_ps = max(trrd_ps, dimm_params[i].trrd_ps);
- trc_ps = max(trc_ps, dimm_params[i].trc_ps);
- tis_ps = max(tis_ps, dimm_params[i].tis_ps);
- tih_ps = max(tih_ps, dimm_params[i].tih_ps);
- tds_ps = max(tds_ps, dimm_params[i].tds_ps);
- tdh_ps = max(tdh_ps, dimm_params[i].tdh_ps);
- trtp_ps = max(trtp_ps, dimm_params[i].trtp_ps);
- tqhs_ps = max(tqhs_ps, dimm_params[i].tqhs_ps);
- refresh_rate_ps = max(refresh_rate_ps,
- dimm_params[i].refresh_rate_ps);
- /* extended_op_srt is either 0 or 1, 0 having priority */
- extended_op_srt = min(extended_op_srt,
- dimm_params[i].extended_op_srt);
-
+ tckmax_ps = min(tckmax_ps,
+ (unsigned int)dimm_params[i].tckmax_ps);
+#if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
+ taamin_ps = max(taamin_ps,
+ (unsigned int)dimm_params[i].taa_ps);
+#endif
+ tckmin_x_ps = max(tckmin_x_ps,
+ (unsigned int)dimm_params[i].tckmin_x_ps);
+ trcd_ps = max(trcd_ps, (unsigned int)dimm_params[i].trcd_ps);
+ trp_ps = max(trp_ps, (unsigned int)dimm_params[i].trp_ps);
+ tras_ps = max(tras_ps, (unsigned int)dimm_params[i].tras_ps);
+#ifdef CONFIG_SYS_FSL_DDR4
+ trfc1_ps = max(trfc1_ps,
+ (unsigned int)dimm_params[i].trfc1_ps);
+ trfc2_ps = max(trfc2_ps,
+ (unsigned int)dimm_params[i].trfc2_ps);
+ trfc4_ps = max(trfc4_ps,
+ (unsigned int)dimm_params[i].trfc4_ps);
+ trrds_ps = max(trrds_ps,
+ (unsigned int)dimm_params[i].trrds_ps);
+ trrdl_ps = max(trrdl_ps,
+ (unsigned int)dimm_params[i].trrdl_ps);
+ tccdl_ps = max(tccdl_ps,
+ (unsigned int)dimm_params[i].tccdl_ps);
+ trfc_slr_ps = max(trfc_slr_ps,
+ (unsigned int)dimm_params[i].trfc_slr_ps);
+#else
+ twr_ps = max(twr_ps, (unsigned int)dimm_params[i].twr_ps);
+ twtr_ps = max(twtr_ps, (unsigned int)dimm_params[i].twtr_ps);
+ trfc_ps = max(trfc_ps, (unsigned int)dimm_params[i].trfc_ps);
+ trrd_ps = max(trrd_ps, (unsigned int)dimm_params[i].trrd_ps);
+ trtp_ps = max(trtp_ps, (unsigned int)dimm_params[i].trtp_ps);
+#endif
+ trc_ps = max(trc_ps, (unsigned int)dimm_params[i].trc_ps);
+#if defined(CONFIG_SYS_FSL_DDR1) || defined(CONFIG_SYS_FSL_DDR2)
+ tis_ps = max(tis_ps, (unsigned int)dimm_params[i].tis_ps);
+ tih_ps = max(tih_ps, (unsigned int)dimm_params[i].tih_ps);
+ tds_ps = max(tds_ps, (unsigned int)dimm_params[i].tds_ps);
+ tdh_ps = max(tdh_ps, (unsigned int)dimm_params[i].tdh_ps);
+ tqhs_ps = max(tqhs_ps, (unsigned int)dimm_params[i].tqhs_ps);
/*
* Find maximum tdqsq_max_ps to find slowest.
*
* FIXME: is finding the slowest value the correct
* strategy for this parameter?
*/
- tdqsq_max_ps = max(tdqsq_max_ps, dimm_params[i].tdqsq_max_ps);
+ tdqsq_max_ps = max(tdqsq_max_ps,
+ (unsigned int)dimm_params[i].tdqsq_max_ps);
+#endif
+ refresh_rate_ps = max(refresh_rate_ps,
+ (unsigned int)dimm_params[i].refresh_rate_ps);
+ /* extended_op_srt is either 0 or 1, 0 having priority */
+ extended_op_srt = min(extended_op_srt,
+ (unsigned int)dimm_params[i].extended_op_srt);
}
outpdimm->ndimms_present = number_of_dimms - temp1;
outpdimm->tckmin_x_ps = tckmin_x_ps;
outpdimm->tckmax_ps = tckmax_ps;
- outpdimm->tckmax_max_ps = tckmax_max_ps;
+#if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
+ outpdimm->taamin_ps = taamin_ps;
+#endif
outpdimm->trcd_ps = trcd_ps;
outpdimm->trp_ps = trp_ps;
outpdimm->tras_ps = tras_ps;
- outpdimm->twr_ps = twr_ps;
+#ifdef CONFIG_SYS_FSL_DDR4
+ outpdimm->trfc1_ps = trfc1_ps;
+ outpdimm->trfc2_ps = trfc2_ps;
+ outpdimm->trfc4_ps = trfc4_ps;
+ outpdimm->trrds_ps = trrds_ps;
+ outpdimm->trrdl_ps = trrdl_ps;
+ outpdimm->tccdl_ps = tccdl_ps;
+ outpdimm->trfc_slr_ps = trfc_slr_ps;
+#else
outpdimm->twtr_ps = twtr_ps;
outpdimm->trfc_ps = trfc_ps;
outpdimm->trrd_ps = trrd_ps;
+ outpdimm->trtp_ps = trtp_ps;
+#endif
+ outpdimm->twr_ps = twr_ps;
outpdimm->trc_ps = trc_ps;
outpdimm->refresh_rate_ps = refresh_rate_ps;
outpdimm->extended_op_srt = extended_op_srt;
+#if defined(CONFIG_SYS_FSL_DDR1) || defined(CONFIG_SYS_FSL_DDR2)
outpdimm->tis_ps = tis_ps;
outpdimm->tih_ps = tih_ps;
outpdimm->tds_ps = tds_ps;
outpdimm->tdh_ps = tdh_ps;
- outpdimm->trtp_ps = trtp_ps;
outpdimm->tdqsq_max_ps = tdqsq_max_ps;
outpdimm->tqhs_ps = tqhs_ps;
+#endif
/* Determine common burst length for all DIMMs. */
temp1 = 0xff;
dimm_params[i].mpart);
#endif
}
+#ifndef CONFIG_SPL_BUILD
+ puts(" ");
+#endif
}
}
if (temp1 != 0)
printf("ERROR: Mix different RDIMM detected!\n");
-#if defined(CONFIG_SYS_FSL_DDR3)
- if (compute_cas_latency_ddr3(dimm_params, outpdimm, number_of_dimms))
+ /* calculate cas latency for all DDR types */
+ if (compute_cas_latency(ctrl_num, dimm_params,
+ outpdimm, number_of_dimms))
return 1;
-#else
- /*
- * Compute a CAS latency suitable for all DIMMs
- *
- * Strategy for SPD-defined latencies: compute only
- * CAS latency defined by all DIMMs.
- */
-
- /*
- * Step 1: find CAS latency common to all DIMMs using bitwise
- * operation.
- */
- temp1 = 0xFF;
- for (i = 0; i < number_of_dimms; i++) {
- if (dimm_params[i].n_ranks) {
- temp2 = 0;
- temp2 |= 1 << dimm_params[i].caslat_x;
- temp2 |= 1 << dimm_params[i].caslat_x_minus_1;
- temp2 |= 1 << dimm_params[i].caslat_x_minus_2;
- /*
- * FIXME: If there was no entry for X-2 (X-1) in
- * the SPD, then caslat_x_minus_2
- * (caslat_x_minus_1) contains either 255 or
- * 0xFFFFFFFF because that's what the glorious
- * __ilog2 function returns for an input of 0.
- * On 32-bit PowerPC, left shift counts with bit
- * 26 set (that the value of 255 or 0xFFFFFFFF
- * will have), cause the destination register to
- * be 0. That is why this works.
- */
- temp1 &= temp2;
- }
- }
-
- /*
- * Step 2: check each common CAS latency against tCK of each
- * DIMM's SPD.
- */
- lowest_good_caslat = 0;
- temp2 = 0;
- while (temp1) {
- not_ok = 0;
- temp2 = __ilog2(temp1);
- debug("checking common caslat = %u\n", temp2);
-
- /* Check if this CAS latency will work on all DIMMs at tCK. */
- for (i = 0; i < number_of_dimms; i++) {
- if (!dimm_params[i].n_ranks) {
- continue;
- }
- if (dimm_params[i].caslat_x == temp2) {
- if (mclk_ps >= dimm_params[i].tckmin_x_ps) {
- debug("CL = %u ok on DIMM %u at tCK=%u"
- " ps with its tCKmin_X_ps of %u\n",
- temp2, i, mclk_ps,
- dimm_params[i].tckmin_x_ps);
- continue;
- } else {
- not_ok++;
- }
- }
-
- if (dimm_params[i].caslat_x_minus_1 == temp2) {
- unsigned int tckmin_x_minus_1_ps
- = dimm_params[i].tckmin_x_minus_1_ps;
- if (mclk_ps >= tckmin_x_minus_1_ps) {
- debug("CL = %u ok on DIMM %u at "
- "tCK=%u ps with its "
- "tckmin_x_minus_1_ps of %u\n",
- temp2, i, mclk_ps,
- tckmin_x_minus_1_ps);
- continue;
- } else {
- not_ok++;
- }
- }
-
- if (dimm_params[i].caslat_x_minus_2 == temp2) {
- unsigned int tckmin_x_minus_2_ps
- = dimm_params[i].tckmin_x_minus_2_ps;
- if (mclk_ps >= tckmin_x_minus_2_ps) {
- debug("CL = %u ok on DIMM %u at "
- "tCK=%u ps with its "
- "tckmin_x_minus_2_ps of %u\n",
- temp2, i, mclk_ps,
- tckmin_x_minus_2_ps);
- continue;
- } else {
- not_ok++;
- }
- }
- }
-
- if (!not_ok) {
- lowest_good_caslat = temp2;
- }
-
- temp1 &= ~(1 << temp2);
- }
-
- debug("lowest common SPD-defined CAS latency = %u\n",
- lowest_good_caslat);
- outpdimm->lowest_common_SPD_caslat = lowest_good_caslat;
-
-
- /*
- * Compute a common 'de-rated' CAS latency.
- *
- * The strategy here is to find the *highest* dereated cas latency
- * with the assumption that all of the DIMMs will support a dereated
- * CAS latency higher than or equal to their lowest dereated value.
- */
- temp1 = 0;
- for (i = 0; i < number_of_dimms; i++) {
- temp1 = max(temp1, dimm_params[i].caslat_lowest_derated);
- }
- outpdimm->highest_common_derated_caslat = temp1;
- debug("highest common dereated CAS latency = %u\n", temp1);
-#endif /* #if defined(CONFIG_SYS_FSL_DDR3) */
/* Determine if all DIMMs ECC capable. */
temp1 = 1;
}
outpdimm->all_dimms_ecc_capable = temp1;
-#ifndef CONFIG_SYS_FSL_DDR3
- /* FIXME: move to somewhere else to validate. */
- if (mclk_ps > tckmax_max_ps) {
- printf("Warning: some of the installed DIMMs "
- "can not operate this slowly.\n");
- return 1;
- }
-#endif
/*
* Compute additive latency.
*
additive_latency = 0;
#if defined(CONFIG_SYS_FSL_DDR2)
- if (lowest_good_caslat < 4) {
- additive_latency = (picos_to_mclk(trcd_ps) > lowest_good_caslat)
- ? picos_to_mclk(trcd_ps) - lowest_good_caslat : 0;
- if (mclk_to_picos(additive_latency) > trcd_ps) {
- additive_latency = picos_to_mclk(trcd_ps);
+ if ((outpdimm->lowest_common_spd_caslat < 4) &&
+ (picos_to_mclk(ctrl_num, trcd_ps) >
+ outpdimm->lowest_common_spd_caslat)) {
+ additive_latency = picos_to_mclk(ctrl_num, trcd_ps) -
+ outpdimm->lowest_common_spd_caslat;
+ if (mclk_to_picos(ctrl_num, additive_latency) > trcd_ps) {
+ additive_latency = picos_to_mclk(ctrl_num, trcd_ps);
debug("setting additive_latency to %u because it was "
" greater than tRCD_ps\n", additive_latency);
}
}
-
-#elif defined(CONFIG_SYS_FSL_DDR3)
- /*
- * The system will not use the global auto-precharge mode.
- * However, it uses the page mode, so we set AL=0
- */
- additive_latency = 0;
#endif
/*
* Validate additive latency
- * FIXME: move to somewhere else to validate
*
* AL <= tRCD(min)
*/
- if (mclk_to_picos(additive_latency) > trcd_ps) {
+ if (mclk_to_picos(ctrl_num, additive_latency) > trcd_ps) {
printf("Error: invalid additive latency exceeds tRCD(min).\n");
return 1;
}
debug("trcd_ps = %u\n", outpdimm->trcd_ps);
debug("trp_ps = %u\n", outpdimm->trp_ps);
debug("tras_ps = %u\n", outpdimm->tras_ps);
- debug("twr_ps = %u\n", outpdimm->twr_ps);
+#ifdef CONFIG_SYS_FSL_DDR4
+ debug("trfc1_ps = %u\n", trfc1_ps);
+ debug("trfc2_ps = %u\n", trfc2_ps);
+ debug("trfc4_ps = %u\n", trfc4_ps);
+ debug("trrds_ps = %u\n", trrds_ps);
+ debug("trrdl_ps = %u\n", trrdl_ps);
+ debug("tccdl_ps = %u\n", tccdl_ps);
+ debug("trfc_slr_ps = %u\n", trfc_slr_ps);
+#else
debug("twtr_ps = %u\n", outpdimm->twtr_ps);
debug("trfc_ps = %u\n", outpdimm->trfc_ps);
debug("trrd_ps = %u\n", outpdimm->trrd_ps);
+#endif
+ debug("twr_ps = %u\n", outpdimm->twr_ps);
debug("trc_ps = %u\n", outpdimm->trc_ps);
return 0;
projects / u-boot.git / blobdiff