projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| b9944a77 DE |
1 | /* |
| 2 | * Copyright 2010 Freescale Semiconductor, Inc. | |
| 3 | * Authors: Srikanth Srinivasan <srikanth.srinivasan@freescale.com> | |
| 4 | * Timur Tabi <timur@freescale.com> | |
| 5 | * | |
| 5b8031cc | 6 | * SPDX-License-Identifier: GPL-2.0+ |
| b9944a77 DE |
7 | */ |
| 8 | ||
| 9 | #include <common.h> | |
| 10 | #include <i2c.h> | |
| 11 | ||
| 5614e71b YS |
12 | #include <fsl_ddr_sdram.h> |
| 13 | #include <fsl_ddr_dimm_params.h> | |
| b9944a77 DE |
14 | |
| 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 | */ | |
| 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 |