1 /*
2 * Copyright 2013 Freescale Semiconductor, Inc.
3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
7 #include <common.h>
8 #include <i2c.h>
9 #include <asm/fsl_law.h>
10 #include <fsl_ddr_sdram.h>
11 #include <fsl_ddr_dimm_params.h>
12
13 #include "cpld.h"
14
15 #define C29XPCIE_HARDWARE_REVA 0x40
16 /*
17 * Micron MT41J128M16HA-15E
18 * */
19 dimm_params_t ddr_raw_timing = {
20 .n_ranks = 1,
21 .rank_density = 536870912u,
22 .capacity = 536870912u,
23 .primary_sdram_width = 32,
24 .ec_sdram_width = 8,
25 .registered_dimm = 0,
26 .mirrored_dimm = 0,
27 .n_row_addr = 14,
28 .n_col_addr = 10,
29 .n_banks_per_sdram_device = 8,
30 .edc_config = 2,
31 .burst_lengths_bitmask = 0x0c,
32
33 .tckmin_x_ps = 1650,
34 .caslat_x = 0x7e << 4, /* 5,6,7,8,9,10 */
35 .taa_ps = 14050,
36 .twr_ps = 15000,
37 .trcd_ps = 13500,
38 .trrd_ps = 75000,
39 .trp_ps = 13500,
40 .tras_ps = 40000,
41 .trc_ps = 49500,
42 .trfc_ps = 160000,
43 .twtr_ps = 75000,
44 .trtp_ps = 75000,
45 .refresh_rate_ps = 7800000,
46 .tfaw_ps = 30000,
47 };
48
fsl_ddr_get_dimm_params(dimm_params_t * pdimm,unsigned int controller_number,unsigned int dimm_number)49 int fsl_ddr_get_dimm_params(dimm_params_t *pdimm,
50 unsigned int controller_number,
51 unsigned int dimm_number)
52 {
53 const char dimm_model[] = "Fixed DDR on board";
54
55 if ((controller_number == 0) && (dimm_number == 0)) {
56 memcpy(pdimm, &ddr_raw_timing, sizeof(dimm_params_t));
57 memset(pdimm->mpart, 0, sizeof(pdimm->mpart));
58 memcpy(pdimm->mpart, dimm_model, sizeof(dimm_model) - 1);
59 }
60
61 return 0;
62 }
63
fsl_ddr_board_options(memctl_options_t * popts,dimm_params_t * pdimm,unsigned int ctrl_num)64 void fsl_ddr_board_options(memctl_options_t *popts,
65 dimm_params_t *pdimm,
66 unsigned int ctrl_num)
67 {
68 struct cpld_data *cpld_data = (void *)(CONFIG_SYS_CPLD_BASE);
69 int i;
70
71 popts->clk_adjust = 4;
72 popts->cpo_override = 0x1f;
73 popts->write_data_delay = 4;
74 popts->half_strength_driver_enable = 1;
75 popts->bstopre = 0x3cf;
76 popts->quad_rank_present = 1;
77 popts->rtt_override = 1;
78 popts->rtt_override_value = 1;
79 popts->dynamic_power = 1;
80 /* Write leveling override */
81 popts->wrlvl_en = 1;
82 popts->wrlvl_override = 1;
83 popts->wrlvl_sample = 0xf;
84 popts->wrlvl_start = 0x4;
85 popts->trwt_override = 1;
86 popts->trwt = 0;
87
88 if (in_8(&cpld_data->hwver) == C29XPCIE_HARDWARE_REVA)
89 popts->ecc_mode = 0;
90
91 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
92 popts->cs_local_opts[i].odt_rd_cfg = FSL_DDR_ODT_NEVER;
93 popts->cs_local_opts[i].odt_wr_cfg = FSL_DDR_ODT_CS;
94 }
95 }
96
get_spd(generic_spd_eeprom_t * spd,u8 i2c_address)97 void get_spd(generic_spd_eeprom_t *spd, u8 i2c_address)
98 {
99 int ret = i2c_read(i2c_address, 0, 2, (uint8_t *)spd,
100 sizeof(generic_spd_eeprom_t));
101
102 if (ret) {
103 printf("DDR: failed to read SPD from address %u\n",
104 i2c_address);
105 memset(spd, 0, sizeof(generic_spd_eeprom_t));
106 }
107 }
108