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Stefan Roesea7f480d2016-02-10 11:41:26 +01001/*
2 * SPL specific code for CCV xPress
3 *
4 * Copyright (C) 2015-2016 Stefan Roese <sr@denx.de>
5 *
6 * SPDX-License-Identifier: GPL-2.0+
7 */
8
9#include <common.h>
10#include <spl.h>
11#include <asm/io.h>
12#include <asm/arch/mx6-ddr.h>
13#include <asm/arch/crm_regs.h>
14
15/* Configuration for IM IME1G16D3EEBG-15EI, 64M x 16 -> 128MiB */
16
17static struct mx6ul_iomux_grp_regs mx6_grp_ioregs = {
18 .grp_addds = 0x00000030,
19 .grp_ddrmode_ctl = 0x00020000,
20 .grp_b0ds = 0x00000030,
21 .grp_ctlds = 0x00000030,
22 .grp_b1ds = 0x00000030,
23 .grp_ddrpke = 0x00000000,
24 .grp_ddrmode = 0x00020000,
25 .grp_ddr_type = 0x000c0000,
26};
27
28static struct mx6ul_iomux_ddr_regs mx6_ddr_ioregs = {
29 .dram_dqm0 = 0x00000030,
30 .dram_dqm1 = 0x00000030,
31 .dram_ras = 0x00000030,
32 .dram_cas = 0x00000030,
33 .dram_odt0 = 0x00000030,
34 .dram_odt1 = 0x00000030,
35 .dram_sdba2 = 0x00000000,
36 .dram_sdclk_0 = 0x00000008,
37 .dram_sdqs0 = 0x00000038,
38 .dram_sdqs1 = 0x00000030,
39 .dram_reset = 0x00000030,
40};
41
42static struct mx6_mmdc_calibration mx6_mmcd_calib = {
43 .p0_mpwldectrl0 = 0x00000000,
44 .p0_mpdgctrl0 = 0x4164015C,
45 .p0_mprddlctl = 0x40404446,
46 .p0_mpwrdlctl = 0x40405A52,
47};
48
49struct mx6_ddr_sysinfo ddr_sysinfo = {
50 .dsize = 0,
51 .cs_density = 20,
52 .ncs = 1,
53 .cs1_mirror = 0,
54 .rtt_wr = 2,
55 .rtt_nom = 1, /* RTT_Nom = RZQ/2 */
56 .walat = 1, /* Write additional latency */
57 .ralat = 5, /* Read additional latency */
58 .mif3_mode = 3, /* Command prediction working mode */
59 .bi_on = 1, /* Bank interleaving enabled */
60 .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */
61 .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
62 .ddr_type = DDR_TYPE_DDR3,
63};
64
65static struct mx6_ddr3_cfg mem_ddr = {
66 .mem_speed = 800,
67 .density = 4,
68 .width = 16,
69 .banks = 8,
70 .rowaddr = 13,
71 .coladdr = 10,
72 .pagesz = 2,
73 .trcd = 1375,
74 .trcmin = 4875,
75 .trasmin = 3500,
76};
77
78static void ccgr_init(void)
79{
80 struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
81
82 writel(0xFFFFFFFF, &ccm->CCGR0);
83 writel(0xFFFFFFFF, &ccm->CCGR1);
84 writel(0xFFFFFFFF, &ccm->CCGR2);
85 writel(0xFFFFFFFF, &ccm->CCGR3);
86 writel(0xFFFFFFFF, &ccm->CCGR4);
87 writel(0xFFFFFFFF, &ccm->CCGR5);
88 writel(0xFFFFFFFF, &ccm->CCGR6);
89 writel(0xFFFFFFFF, &ccm->CCGR7);
90}
91
92static void spl_dram_init(void)
93{
94 mx6ul_dram_iocfg(mem_ddr.width, &mx6_ddr_ioregs, &mx6_grp_ioregs);
95 mx6_dram_cfg(&ddr_sysinfo, &mx6_mmcd_calib, &mem_ddr);
96}
97
98void board_init_f(ulong dummy)
99{
100 /* Setup AIPS and disable watchdog */
101 arch_cpu_init();
102
103 ccgr_init();
104
105 /* Setup iomux and i2c */
106 board_early_init_f();
107
108 /* Setup GP timer */
109 timer_init();
110
111 /* UART clocks enabled and gd valid - init serial console */
112 preloader_console_init();
113
114 /* DDR initialization */
115 spl_dram_init();
116}