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