1 /* 2 * Copyright 2010 Freescale Semiconductor, Inc. 3 * Authors: Srikanth Srinivasan <srikanth.srinivasan@freescale.com> 4 * Timur Tabi <timur@freescale.com> 5 * 6 * SPDX-License-Identifier: GPL-2.0+ 7 */ 8 9 #include <common.h> 10 #include <i2c.h> 11 12 #include <fsl_ddr_sdram.h> 13 #include <fsl_ddr_dimm_params.h> 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 69