| Dirk Eibach | 762d3df | 2013-06-26 15:55:17 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2010 Freescale Semiconductor, Inc. |
| 3 | * Authors: Srikanth Srinivasan <srikanth.srinivasan@freescale.com> |
| 4 | * Timur Tabi <timur@freescale.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the Free |
| 8 | * Software Foundation; either version 2 of the License, or (at your option) |
| 9 | * any later version. |
| 10 | */ |
| 11 | |
| 12 | #include <common.h> |
| 13 | #include <i2c.h> |
| 14 | |
| York Sun | f062659 | 2013-09-30 09:22:09 -0700 | [diff] [blame^] | 15 | #include <fsl_ddr_sdram.h> |
| 16 | #include <fsl_ddr_dimm_params.h> |
| Dirk Eibach | 762d3df | 2013-06-26 15:55:17 +0200 | [diff] [blame] | 17 | |
| 18 | void fsl_ddr_board_options(memctl_options_t *popts, dimm_params_t *pdimm, |
| 19 | unsigned int ctrl_num) |
| 20 | { |
| 21 | unsigned int i; |
| 22 | |
| 23 | if (ctrl_num) { |
| 24 | printf("Wrong parameter for controller number %d", ctrl_num); |
| 25 | return; |
| 26 | } |
| 27 | if (!pdimm->n_ranks) |
| 28 | return; |
| 29 | |
| 30 | /* set odt_rd_cfg and odt_wr_cfg. */ |
| 31 | for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { |
| 32 | popts->cs_local_opts[i].odt_rd_cfg = 0; |
| 33 | popts->cs_local_opts[i].odt_wr_cfg = 1; |
| 34 | } |
| 35 | |
| 36 | popts->clk_adjust = 5; |
| 37 | popts->cpo_override = 0x1f; |
| 38 | popts->write_data_delay = 2; |
| 39 | popts->half_strength_driver_enable = 1; |
| 40 | |
| 41 | /* Per AN4039, enable ZQ calibration. */ |
| 42 | popts->zq_en = 1; |
| 43 | } |
| 44 | |
| 45 | #ifdef CONFIG_SPD_EEPROM |
| 46 | /* |
| 47 | * we only have a "fake" SPD-EEPROM here, which has 16 bit addresses |
| 48 | */ |
| 49 | void get_spd(generic_spd_eeprom_t *spd, u8 i2c_address) |
| 50 | { |
| 51 | int ret = i2c_read(i2c_address, 0, 2, (uchar *)spd, |
| 52 | sizeof(generic_spd_eeprom_t)); |
| 53 | |
| 54 | if (ret) { |
| 55 | if (i2c_address == |
| 56 | #ifdef SPD_EEPROM_ADDRESS |
| 57 | SPD_EEPROM_ADDRESS |
| 58 | #elif defined(SPD_EEPROM_ADDRESS1) |
| 59 | SPD_EEPROM_ADDRESS1 |
| 60 | #endif |
| 61 | ) { |
| 62 | printf("DDR: failed to read SPD from address %u\n", |
| 63 | i2c_address); |
| 64 | } else { |
| 65 | debug("DDR: failed to read SPD from address %u\n", |
| 66 | i2c_address); |
| 67 | } |
| 68 | memset(spd, 0, sizeof(generic_spd_eeprom_t)); |
| 69 | } |
| 70 | } |
| 71 | #endif |