1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright 2010 Freescale Semiconductor, Inc.
4 * Authors: Srikanth Srinivasan <srikanth.srinivasan@freescale.com>
5 * Timur Tabi <timur@freescale.com>
6 */
7
8 #include <common.h>
9 #include <i2c.h>
10 #include <log.h>
11
12 #include <fsl_ddr_sdram.h>
13 #include <fsl_ddr_dimm_params.h>
14
fsl_ddr_board_options(memctl_options_t * popts,dimm_params_t * pdimm,unsigned int ctrl_num)15 void fsl_ddr_board_options(memctl_options_t *popts, dimm_params_t *pdimm,
16 unsigned int ctrl_num)
17 {
18 unsigned int i;
19
20 if (ctrl_num) {
21 printf("Wrong parameter for controller number %d", ctrl_num);
22 return;
23 }
24 if (!pdimm->n_ranks)
25 return;
26
27 /* set odt_rd_cfg and odt_wr_cfg. */
28 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
29 popts->cs_local_opts[i].odt_rd_cfg = 0;
30 popts->cs_local_opts[i].odt_wr_cfg = 1;
31 }
32
33 popts->clk_adjust = 5;
34 popts->cpo_override = 0x1f;
35 popts->write_data_delay = 2;
36 popts->half_strength_driver_enable = 1;
37
38 /* Per AN4039, enable ZQ calibration. */
39 popts->zq_en = 1;
40 }
41
42 #ifdef CONFIG_SPD_EEPROM
43 /*
44 * we only have a "fake" SPD-EEPROM here, which has 16 bit addresses
45 */
get_spd(generic_spd_eeprom_t * spd,u8 i2c_address)46 void get_spd(generic_spd_eeprom_t *spd, u8 i2c_address)
47 {
48 int ret = i2c_read(i2c_address, 0, 2, (uchar *)spd,
49 sizeof(generic_spd_eeprom_t));
50
51 if (ret) {
52 if (i2c_address ==
53 #ifdef SPD_EEPROM_ADDRESS
54 SPD_EEPROM_ADDRESS
55 #elif defined(SPD_EEPROM_ADDRESS1)
56 SPD_EEPROM_ADDRESS1
57 #endif
58 ) {
59 printf("DDR: failed to read SPD from address %u\n",
60 i2c_address);
61 } else {
62 debug("DDR: failed to read SPD from address %u\n",
63 i2c_address);
64 }
65 memset(spd, 0, sizeof(generic_spd_eeprom_t));
66 }
67 }
68 #endif
69