board/udoo/udoo_spl.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2015 Udoo
   4  * Author: Tungyi Lin <tungyilin1127@gmail.com>
   5  *         Richard Hu <hakahu@gmail.com>
   6  * Based on board/wandboard/spl.c
   7  */
   8
   9 #include <common.h>
  10 #include <init.h>
  11 #include <asm/arch/clock.h>
  12 #include <asm/arch/imx-regs.h>
  13 #include <asm/arch/iomux.h>
  14 #include <asm/arch/mx6-pins.h>
  15 #include <linux/errno.h>
  16 #include <asm/gpio.h>
  17 #include <asm/mach-imx/iomux-v3.h>
  18 #include <asm/mach-imx/video.h>
  19 #include <mmc.h>
  20 #include <fsl_esdhc_imx.h>
  21 #include <asm/arch/crm_regs.h>
  22 #include <asm/io.h>
  23 #include <asm/arch/sys_proto.h>
  24 #include <spl.h>
  25
  26 #if defined(CONFIG_SPL_BUILD)
  27 #include <asm/arch/mx6-ddr.h>
  28
  29 /*
  30  * Driving strength:
  31  *   0x30 == 40 Ohm
  32  *   0x28 == 48 Ohm
  33  */
  34 #define IMX6DQ_DRIVE_STRENGTH           0x30
  35 #define IMX6SDL_DRIVE_STRENGTH  0x28
  36
  37 /* configure MX6Q/DUAL mmdc DDR io registers */
  38 static struct mx6dq_iomux_ddr_regs mx6dq_ddr_ioregs = {
  39         .dram_sdclk_0 = IMX6DQ_DRIVE_STRENGTH,
  40         .dram_sdclk_1 = IMX6DQ_DRIVE_STRENGTH,
  41         .dram_cas = IMX6DQ_DRIVE_STRENGTH,
  42         .dram_ras = IMX6DQ_DRIVE_STRENGTH,
  43         .dram_reset = IMX6DQ_DRIVE_STRENGTH,
  44         .dram_sdcke0 = IMX6DQ_DRIVE_STRENGTH,
  45         .dram_sdcke1 = IMX6DQ_DRIVE_STRENGTH,
  46         .dram_sdba2 = 0x00000000,
  47         .dram_sdodt0 = IMX6DQ_DRIVE_STRENGTH,
  48         .dram_sdodt1 = IMX6DQ_DRIVE_STRENGTH,
  49         .dram_sdqs0 = IMX6DQ_DRIVE_STRENGTH,
  50         .dram_sdqs1 = IMX6DQ_DRIVE_STRENGTH,
  51         .dram_sdqs2 = IMX6DQ_DRIVE_STRENGTH,
  52         .dram_sdqs3 = IMX6DQ_DRIVE_STRENGTH,
  53         .dram_sdqs4 = IMX6DQ_DRIVE_STRENGTH,
  54         .dram_sdqs5 = IMX6DQ_DRIVE_STRENGTH,
  55         .dram_sdqs6 = IMX6DQ_DRIVE_STRENGTH,
  56         .dram_sdqs7 = IMX6DQ_DRIVE_STRENGTH,
  57         .dram_dqm0 = IMX6DQ_DRIVE_STRENGTH,
  58         .dram_dqm1 = IMX6DQ_DRIVE_STRENGTH,
  59         .dram_dqm2 = IMX6DQ_DRIVE_STRENGTH,
  60         .dram_dqm3 = IMX6DQ_DRIVE_STRENGTH,
  61         .dram_dqm4 = IMX6DQ_DRIVE_STRENGTH,
  62         .dram_dqm5 = IMX6DQ_DRIVE_STRENGTH,
  63         .dram_dqm6 = IMX6DQ_DRIVE_STRENGTH,
  64         .dram_dqm7 = IMX6DQ_DRIVE_STRENGTH,
  65 };
  66
  67 /* configure MX6Q/DUAL mmdc GRP io registers */
  68 static struct mx6dq_iomux_grp_regs mx6dq_grp_ioregs = {
  69         .grp_ddr_type = 0x000c0000,
  70         .grp_ddrmode_ctl = 0x00020000,
  71         .grp_ddrpke = 0x00000000,
  72         .grp_addds = IMX6DQ_DRIVE_STRENGTH,
  73         .grp_ctlds = IMX6DQ_DRIVE_STRENGTH,
  74         .grp_ddrmode = 0x00020000,
  75         .grp_b0ds = IMX6DQ_DRIVE_STRENGTH,
  76         .grp_b1ds = IMX6DQ_DRIVE_STRENGTH,
  77         .grp_b2ds = IMX6DQ_DRIVE_STRENGTH,
  78         .grp_b3ds = IMX6DQ_DRIVE_STRENGTH,
  79         .grp_b4ds = IMX6DQ_DRIVE_STRENGTH,
  80         .grp_b5ds = IMX6DQ_DRIVE_STRENGTH,
  81         .grp_b6ds = IMX6DQ_DRIVE_STRENGTH,
  82         .grp_b7ds = IMX6DQ_DRIVE_STRENGTH,
  83 };
  84
  85 /* configure MX6SOLO/DUALLITE mmdc DDR io registers */
  86 struct mx6sdl_iomux_ddr_regs mx6sdl_ddr_ioregs = {
  87         .dram_sdclk_0 = IMX6SDL_DRIVE_STRENGTH,
  88         .dram_sdclk_1 = IMX6SDL_DRIVE_STRENGTH,
  89         .dram_cas = IMX6SDL_DRIVE_STRENGTH,
  90         .dram_ras = IMX6SDL_DRIVE_STRENGTH,
  91         .dram_reset = IMX6SDL_DRIVE_STRENGTH,
  92         .dram_sdcke0 = IMX6SDL_DRIVE_STRENGTH,
  93         .dram_sdcke1 = IMX6SDL_DRIVE_STRENGTH,
  94         .dram_sdba2 = 0x00000000,
  95         .dram_sdodt0 = IMX6SDL_DRIVE_STRENGTH,
  96         .dram_sdodt1 = IMX6SDL_DRIVE_STRENGTH,
  97         .dram_sdqs0 = IMX6SDL_DRIVE_STRENGTH,
  98         .dram_sdqs1 = IMX6SDL_DRIVE_STRENGTH,
  99         .dram_sdqs2 = IMX6SDL_DRIVE_STRENGTH,
 100         .dram_sdqs3 = IMX6SDL_DRIVE_STRENGTH,
 101         .dram_sdqs4 = IMX6SDL_DRIVE_STRENGTH,
 102         .dram_sdqs5 = IMX6SDL_DRIVE_STRENGTH,
 103         .dram_sdqs6 = IMX6SDL_DRIVE_STRENGTH,
 104         .dram_sdqs7 = IMX6SDL_DRIVE_STRENGTH,
 105         .dram_dqm0 = IMX6SDL_DRIVE_STRENGTH,
 106         .dram_dqm1 = IMX6SDL_DRIVE_STRENGTH,
 107         .dram_dqm2 = IMX6SDL_DRIVE_STRENGTH,
 108         .dram_dqm3 = IMX6SDL_DRIVE_STRENGTH,
 109         .dram_dqm4 = IMX6SDL_DRIVE_STRENGTH,
 110         .dram_dqm5 = IMX6SDL_DRIVE_STRENGTH,
 111         .dram_dqm6 = IMX6SDL_DRIVE_STRENGTH,
 112         .dram_dqm7 = IMX6SDL_DRIVE_STRENGTH,
 113 };
 114
 115 /* configure MX6SOLO/DUALLITE mmdc GRP io registers */
 116 struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
 117         .grp_ddr_type = 0x000c0000,
 118         .grp_ddrmode_ctl = 0x00020000,
 119         .grp_ddrpke = 0x00000000,
 120         .grp_addds = IMX6SDL_DRIVE_STRENGTH,
 121         .grp_ctlds = IMX6SDL_DRIVE_STRENGTH,
 122         .grp_ddrmode = 0x00020000,
 123         .grp_b0ds = IMX6SDL_DRIVE_STRENGTH,
 124         .grp_b1ds = IMX6SDL_DRIVE_STRENGTH,
 125         .grp_b2ds = IMX6SDL_DRIVE_STRENGTH,
 126         .grp_b3ds = IMX6SDL_DRIVE_STRENGTH,
 127         .grp_b4ds = IMX6SDL_DRIVE_STRENGTH,
 128         .grp_b5ds = IMX6SDL_DRIVE_STRENGTH,
 129         .grp_b6ds = IMX6SDL_DRIVE_STRENGTH,
 130         .grp_b7ds = IMX6SDL_DRIVE_STRENGTH,
 131 };
 132
 133 /* MT41K128M16JT-125 */
 134 static struct mx6_ddr3_cfg mt41k128m16jt_125 = {
 135         /* quad = 1066, duallite = 800 */
 136         .mem_speed = 1066,
 137         .density = 2,
 138         .width = 16,
 139         .banks = 8,
 140         .rowaddr = 14,
 141         .coladdr = 10,
 142         .pagesz = 2,
 143         .trcd = 1375,
 144         .trcmin = 4875,
 145         .trasmin = 3500,
 146         .SRT = 0,
 147 };
 148
 149 static struct mx6_mmdc_calibration mx6q_1g_mmdc_calib = {
 150         .p0_mpwldectrl0 = 0x00350035,
 151         .p0_mpwldectrl1 = 0x001F001F,
 152         .p1_mpwldectrl0 = 0x00010001,
 153         .p1_mpwldectrl1 = 0x00010001,
 154         .p0_mpdgctrl0 = 0x43510360,
 155         .p0_mpdgctrl1 = 0x0342033F,
 156         .p1_mpdgctrl0 = 0x033F033F,
 157         .p1_mpdgctrl1 = 0x03290266,
 158         .p0_mprddlctl = 0x4B3E4141,
 159         .p1_mprddlctl = 0x47413B4A,
 160         .p0_mpwrdlctl = 0x42404843,
 161         .p1_mpwrdlctl = 0x4C3F4C45,
 162 };
 163
 164 static struct mx6_mmdc_calibration mx6dl_1g_mmdc_calib = {
 165         .p0_mpwldectrl0 = 0x002F0038,
 166         .p0_mpwldectrl1 = 0x001F001F,
 167         .p1_mpwldectrl0 = 0x001F001F,
 168         .p1_mpwldectrl1 = 0x001F001F,
 169         .p0_mpdgctrl0 = 0x425C0251,
 170         .p0_mpdgctrl1 = 0x021B021E,
 171         .p1_mpdgctrl0 = 0x021B021E,
 172         .p1_mpdgctrl1 = 0x01730200,
 173         .p0_mprddlctl = 0x45474C45,
 174         .p1_mprddlctl = 0x44464744,
 175         .p0_mpwrdlctl = 0x3F3F3336,
 176         .p1_mpwrdlctl = 0x32383630,
 177 };
 178
 179 /* DDR 64bit 1GB */
 180 static struct mx6_ddr_sysinfo mem_qdl = {
 181         .dsize = 2,
 182         .cs1_mirror = 0,
 183         /* config for full 4GB range so that get_mem_size() works */
 184         .cs_density = 32,
 185         .ncs = 1,
 186         .bi_on = 1,
 187         /* quad = 2, duallite = 1 */
 188         .rtt_nom = 2,
 189         /* quad = 2, duallite = 1 */
 190         .rtt_wr = 2,
 191         .ralat = 5,
 192         .walat = 0,
 193         .mif3_mode = 3,
 194         .rst_to_cke = 0x23,
 195         .sde_to_rst = 0x10,
 196         .refsel = 1,    /* Refresh cycles at 32KHz */
 197         .refr = 7,      /* 8 refresh commands per refresh cycle */
 198 };
 199
 200 static void ccgr_init(void)
 201 {
 202         struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 203
 204         /* set the default clock gate to save power */
 205         writel(0x00C03F3F, &ccm->CCGR0);
 206         writel(0x0030FC03, &ccm->CCGR1);
 207         writel(0x0FFFC000, &ccm->CCGR2);
 208         writel(0x3FF00000, &ccm->CCGR3);
 209         writel(0x00FFF300, &ccm->CCGR4);
 210         writel(0x0F0000C3, &ccm->CCGR5);
 211         writel(0x000003FF, &ccm->CCGR6);
 212 }
 213
 214 static void spl_dram_init(void)
 215 {
 216         if (is_cpu_type(MXC_CPU_MX6DL)) {
 217                 mt41k128m16jt_125.mem_speed = 800;
 218                 mem_qdl.rtt_nom = 1;
 219                 mem_qdl.rtt_wr = 1;
 220
 221                 mx6sdl_dram_iocfg(64, &mx6sdl_ddr_ioregs, &mx6sdl_grp_ioregs);
 222                 mx6_dram_cfg(&mem_qdl, &mx6dl_1g_mmdc_calib, &mt41k128m16jt_125);
 223         } else if (is_cpu_type(MXC_CPU_MX6Q)) {
 224                 mt41k128m16jt_125.mem_speed = 1066;
 225                 mem_qdl.rtt_nom = 2;
 226                 mem_qdl.rtt_wr = 2;
 227
 228                 mx6dq_dram_iocfg(64, &mx6dq_ddr_ioregs, &mx6dq_grp_ioregs);
 229                 mx6_dram_cfg(&mem_qdl, &mx6q_1g_mmdc_calib, &mt41k128m16jt_125);
 230         }
 231
 232         udelay(100);
 233 }
 234
 235 void board_init_f(ulong dummy)
 236 {
 237         ccgr_init();
 238
 239         /* setup AIPS and disable watchdog */
 240         arch_cpu_init();
 241
 242         gpr_init();
 243
 244         /* iomux */
 245         board_early_init_f();
 246
 247         /* setup GP timer */
 248         timer_init();
 249
 250         /* UART clocks enabled and gd valid - init serial console */
 251         preloader_console_init();
 252
 253         /* DDR initialization */
 254         spl_dram_init();
 255 }
 256 #endif