board_f: Drop return value from initdram()
[oweals/u-boot.git] / board / keymile / kmp204x / ddr.c
1 /*
2  * (C) Copyright 2013 Keymile AG
3  * Valentin Longchamp <valentin.longchamp@keymile.com>
4  *
5  * Copyright 2009-2011 Freescale Semiconductor, Inc.
6  *
7  * SPDX-License-Identifier:     GPL-2.0+
8   */
9
10 #include <common.h>
11 #include <i2c.h>
12 #include <hwconfig.h>
13 #include <asm/mmu.h>
14 #include <fsl_ddr_sdram.h>
15 #include <fsl_ddr_dimm_params.h>
16
17 DECLARE_GLOBAL_DATA_PTR;
18
19 void fsl_ddr_board_options(memctl_options_t *popts,
20                                 dimm_params_t *pdimm,
21                                 unsigned int ctrl_num)
22 {
23         if (ctrl_num) {
24                 printf("Wrong parameter for controller number %d", ctrl_num);
25                 return;
26         }
27
28         /* automatic calibration for nb of cycles between read and DQS pre */
29         popts->cpo_override = 0xFF;
30
31         /* 1/2 clk delay between wr command and data strobe */
32         popts->write_data_delay = 4;
33         /* clk lauched 1/2 applied cylcle after address command */
34         popts->clk_adjust = 4;
35         /* 1T timing: command/address held for only 1 cycle */
36         popts->twot_en = 0;
37
38         /* we have only one module, half str should be OK */
39         popts->half_strength_driver_enable = 1;
40
41         /* wrlvl values overridden as recommended by ddr init func */
42         popts->wrlvl_override = 1;
43         popts->wrlvl_sample = 0xf;
44         popts->wrlvl_start = 0x6;
45
46         /* Enable ZQ calibration */
47         popts->zq_en = 1;
48
49         /* DHC_EN =1, ODT = 75 Ohm */
50         popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR_ODT_75ohm;
51 }
52
53 int initdram(void)
54 {
55         phys_size_t dram_size = 0;
56
57         puts("Initializing with SPD\n");
58
59         dram_size = fsl_ddr_sdram();
60
61         dram_size = setup_ddr_tlbs(dram_size / 0x100000);
62         dram_size *= 0x100000;
63
64         debug("    DDR: ");
65         gd->ram_size = dram_size;
66
67         return 0;
68 }