board/engicam/isiotmx6ul/isiotmx6ul.c

   1 /*
   2  * Copyright (C) 2016 Amarula Solutions B.V.
   3  * Copyright (C) 2016 Engicam S.r.l.
   4  * Author: Jagan Teki <jagan@amarulasolutions.com>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <common.h>
  10 #include <mmc.h>
  11
  12 #include <asm/io.h>
  13 #include <asm/gpio.h>
  14 #include <linux/sizes.h>
  15
  16 #include <asm/arch/clock.h>
  17 #include <asm/arch/crm_regs.h>
  18 #include <asm/arch/iomux.h>
  19 #include <asm/arch/mx6-pins.h>
  20 #include <asm/arch/sys_proto.h>
  21 #include <asm/imx-common/iomux-v3.h>
  22
  23 DECLARE_GLOBAL_DATA_PTR;
  24
  25 #ifdef CONFIG_NAND_MXS
  26
  27 #define GPMI_PAD_CTRL0          (PAD_CTL_PKE | PAD_CTL_PUE | PAD_CTL_PUS_100K_UP)
  28 #define GPMI_PAD_CTRL1          (PAD_CTL_DSE_40ohm | PAD_CTL_SPEED_MED | \
  29                                 PAD_CTL_SRE_FAST)
  30 #define GPMI_PAD_CTRL2          (GPMI_PAD_CTRL0 | GPMI_PAD_CTRL1)
  31
  32 static iomux_v3_cfg_t const nand_pads[] = {
  33         IOMUX_PADS(PAD_NAND_DATA00__RAWNAND_DATA00 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
  34         IOMUX_PADS(PAD_NAND_DATA01__RAWNAND_DATA01 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
  35         IOMUX_PADS(PAD_NAND_DATA02__RAWNAND_DATA02 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
  36         IOMUX_PADS(PAD_NAND_DATA03__RAWNAND_DATA03 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
  37         IOMUX_PADS(PAD_NAND_DATA04__RAWNAND_DATA04 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
  38         IOMUX_PADS(PAD_NAND_DATA05__RAWNAND_DATA05 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
  39         IOMUX_PADS(PAD_NAND_DATA06__RAWNAND_DATA06 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
  40         IOMUX_PADS(PAD_NAND_DATA07__RAWNAND_DATA07 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
  41         IOMUX_PADS(PAD_NAND_CLE__RAWNAND_CLE | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
  42         IOMUX_PADS(PAD_NAND_ALE__RAWNAND_ALE | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
  43         IOMUX_PADS(PAD_NAND_CE0_B__RAWNAND_CE0_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
  44         IOMUX_PADS(PAD_NAND_RE_B__RAWNAND_RE_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
  45         IOMUX_PADS(PAD_NAND_WE_B__RAWNAND_WE_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
  46         IOMUX_PADS(PAD_NAND_WP_B__RAWNAND_WP_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
  47         IOMUX_PADS(PAD_NAND_READY_B__RAWNAND_READY_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
  48 };
  49
  50 static void setup_gpmi_nand(void)
  51 {
  52         struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
  53
  54         /* config gpmi nand iomux */
  55         SETUP_IOMUX_PADS(nand_pads);
  56
  57         clrbits_le32(&mxc_ccm->CCGR4,
  58                      MXC_CCM_CCGR4_RAWNAND_U_BCH_INPUT_APB_MASK |
  59                      MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_BCH_MASK |
  60                      MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK |
  61                      MXC_CCM_CCGR4_RAWNAND_U_GPMI_INPUT_APB_MASK |
  62                      MXC_CCM_CCGR4_PL301_MX6QPER1_BCH_MASK);
  63
  64         /*
  65          * config gpmi and bch clock to 100 MHz
  66          * bch/gpmi select PLL2 PFD2 400M
  67          * 100M = 400M / 4
  68          */
  69         clrbits_le32(&mxc_ccm->cscmr1,
  70                      MXC_CCM_CSCMR1_BCH_CLK_SEL |
  71                      MXC_CCM_CSCMR1_GPMI_CLK_SEL);
  72         clrsetbits_le32(&mxc_ccm->cscdr1,
  73                         MXC_CCM_CSCDR1_BCH_PODF_MASK |
  74                         MXC_CCM_CSCDR1_GPMI_PODF_MASK,
  75                         (3 << MXC_CCM_CSCDR1_BCH_PODF_OFFSET) |
  76                         (3 << MXC_CCM_CSCDR1_GPMI_PODF_OFFSET));
  77
  78         /* enable gpmi and bch clock gating */
  79         setbits_le32(&mxc_ccm->CCGR4,
  80                      MXC_CCM_CCGR4_RAWNAND_U_BCH_INPUT_APB_MASK |
  81                      MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_BCH_MASK |
  82                      MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK |
  83                      MXC_CCM_CCGR4_RAWNAND_U_GPMI_INPUT_APB_MASK |
  84                      MXC_CCM_CCGR4_PL301_MX6QPER1_BCH_MASK);
  85
  86         /* enable apbh clock gating */
  87         setbits_le32(&mxc_ccm->CCGR0, MXC_CCM_CCGR0_APBHDMA_MASK);
  88 }
  89 #endif /* CONFIG_NAND_MXS */
  90
  91 #ifdef CONFIG_ENV_IS_IN_MMC
  92 int board_mmc_get_env_dev(int devno)
  93 {
  94         /* dev 0 for SD/eSD, dev 1 for MMC/eMMC */
  95         return (devno == 0) ? 0 : 1;
  96 }
  97
  98 static void mmc_late_init(void)
  99 {
 100         char cmd[32];
 101         char mmcblk[32];
 102         u32 dev_no = mmc_get_env_dev();
 103
 104         setenv_ulong("mmcdev", dev_no);
 105
 106         /* Set mmcblk env */
 107         sprintf(mmcblk, "/dev/mmcblk%dp2 rootwait rw", dev_no);
 108         setenv("mmcroot", mmcblk);
 109
 110         sprintf(cmd, "mmc dev %d", dev_no);
 111         run_command(cmd, 0);
 112 }
 113 #endif
 114
 115 int board_late_init(void)
 116 {
 117         switch ((imx6_src_get_boot_mode() & IMX6_BMODE_MASK) >>
 118                         IMX6_BMODE_SHIFT) {
 119         case IMX6_BMODE_SD:
 120         case IMX6_BMODE_ESD:
 121         case IMX6_BMODE_MMC:
 122         case IMX6_BMODE_EMMC:
 123 #ifdef CONFIG_ENV_IS_IN_MMC
 124                 mmc_late_init();
 125 #endif
 126                 setenv("modeboot", "mmcboot");
 127                 break;
 128         case IMX6_BMODE_NAND:
 129                 setenv("modeboot", "nandboot");
 130                 break;
 131         default:
 132                 setenv("modeboot", "");
 133                 break;
 134         }
 135
 136         if (is_mx6ul()) {
 137 #ifdef CONFIG_ENV_IS_IN_MMC
 138                 setenv("fdt_file", "imx6ul-isiot-emmc.dtb");
 139 #else
 140                 setenv("fdt_file", "imx6ul-isiot-nand.dtb");
 141 #endif
 142         }
 143
 144         return 0;
 145 }
 146
 147 int board_init(void)
 148 {
 149         /* Address of boot parameters */
 150         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 151
 152 #ifdef CONFIG_NAND_MXS
 153         setup_gpmi_nand();
 154 #endif
 155         return 0;
 156 }
 157
 158 int dram_init(void)
 159 {
 160         gd->ram_size = imx_ddr_size();
 161
 162         return 0;
 163 }
 164
 165 #ifdef CONFIG_SPL_BUILD
 166 #include <libfdt.h>
 167 #include <spl.h>
 168
 169 #include <asm/arch/crm_regs.h>
 170 #include <asm/arch/mx6-ddr.h>
 171
 172 #define UART_PAD_CTRL  (PAD_CTL_PKE | PAD_CTL_PUE | \
 173                         PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
 174                         PAD_CTL_DSE_40ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
 175
 176 static iomux_v3_cfg_t const uart1_pads[] = {
 177         IOMUX_PADS(PAD_UART1_TX_DATA__UART1_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL)),
 178         IOMUX_PADS(PAD_UART1_RX_DATA__UART1_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL)),
 179 };
 180
 181 /* MMC board initialization is needed till adding DM support in SPL */
 182 #if defined(CONFIG_FSL_ESDHC) && !defined(CONFIG_DM_MMC)
 183 #include <mmc.h>
 184 #include <fsl_esdhc.h>
 185
 186 #define USDHC_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE |             \
 187         PAD_CTL_PUS_22K_UP  | PAD_CTL_SPEED_LOW |               \
 188         PAD_CTL_DSE_80ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
 189
 190 static iomux_v3_cfg_t const usdhc1_pads[] = {
 191         IOMUX_PADS(PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 192         IOMUX_PADS(PAD_SD1_CMD__USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 193         IOMUX_PADS(PAD_SD1_DATA0__USDHC1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 194         IOMUX_PADS(PAD_SD1_DATA1__USDHC1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 195         IOMUX_PADS(PAD_SD1_DATA2__USDHC1_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 196         IOMUX_PADS(PAD_SD1_DATA3__USDHC1_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 197
 198         /* VSELECT */
 199         IOMUX_PADS(PAD_GPIO1_IO05__USDHC1_VSELECT | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 200         /* CD */
 201         IOMUX_PADS(PAD_UART1_RTS_B__GPIO1_IO19 | MUX_PAD_CTRL(NO_PAD_CTRL)),
 202         /* RST_B */
 203         IOMUX_PADS(PAD_GPIO1_IO09__GPIO1_IO09 | MUX_PAD_CTRL(NO_PAD_CTRL)),
 204 };
 205
 206 static iomux_v3_cfg_t const usdhc2_pads[] = {
 207         IOMUX_PADS(PAD_NAND_ALE__USDHC2_RESET_B | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 208         IOMUX_PADS(PAD_NAND_RE_B__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 209         IOMUX_PADS(PAD_NAND_WE_B__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 210         IOMUX_PADS(PAD_NAND_DATA00__USDHC2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 211         IOMUX_PADS(PAD_NAND_DATA01__USDHC2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 212         IOMUX_PADS(PAD_NAND_DATA02__USDHC2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 213         IOMUX_PADS(PAD_NAND_DATA03__USDHC2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 214         IOMUX_PADS(PAD_NAND_DATA04__USDHC2_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 215         IOMUX_PADS(PAD_NAND_DATA05__USDHC2_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 216 };
 217
 218 #define USDHC1_CD_GPIO  IMX_GPIO_NR(1, 19)
 219 #define USDHC2_CD_GPIO  IMX_GPIO_NR(4, 5)
 220
 221 struct fsl_esdhc_cfg usdhc_cfg[2] = {
 222         {USDHC1_BASE_ADDR, 0, 4},
 223         {USDHC2_BASE_ADDR, 0, 8},
 224 };
 225
 226 int board_mmc_getcd(struct mmc *mmc)
 227 {
 228         struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 229         int ret = 0;
 230
 231         switch (cfg->esdhc_base) {
 232         case USDHC1_BASE_ADDR:
 233                 ret = !gpio_get_value(USDHC1_CD_GPIO);
 234                 break;
 235         case USDHC2_BASE_ADDR:
 236                 ret = !gpio_get_value(USDHC2_CD_GPIO);
 237                 break;
 238         }
 239
 240         return ret;
 241 }
 242
 243 int board_mmc_init(bd_t *bis)
 244 {
 245         int i, ret;
 246
 247         /*
 248         * According to the board_mmc_init() the following map is done:
 249         * (U-boot device node)    (Physical Port)
 250         * mmc0                          USDHC1
 251         * mmc1                          USDHC2
 252         */
 253         for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
 254                 switch (i) {
 255                 case 0:
 256                         SETUP_IOMUX_PADS(usdhc1_pads);
 257                         gpio_direction_input(USDHC1_CD_GPIO);
 258                         usdhc_cfg[i].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
 259                         break;
 260                 case 1:
 261                         SETUP_IOMUX_PADS(usdhc2_pads);
 262                         gpio_direction_input(USDHC2_CD_GPIO);
 263                         usdhc_cfg[i].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
 264                         break;
 265                 default:
 266                         printf("Warning - USDHC%d controller not supporting\n",
 267                                i + 1);
 268                         return 0;
 269                 }
 270
 271                 ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
 272                 if (ret) {
 273                         printf("Warning: failed to initialize mmc dev %d\n", i);
 274                         return ret;
 275                 }
 276         }
 277
 278         return 0;
 279 }
 280
 281 #ifdef CONFIG_ENV_IS_IN_MMC
 282 void board_boot_order(u32 *spl_boot_list)
 283 {
 284         u32 bmode = imx6_src_get_boot_mode();
 285         u8 boot_dev = BOOT_DEVICE_MMC1;
 286
 287         switch ((bmode & IMX6_BMODE_MASK) >> IMX6_BMODE_SHIFT) {
 288         case IMX6_BMODE_SD:
 289         case IMX6_BMODE_ESD:
 290                 /* SD/eSD - BOOT_DEVICE_MMC1 */
 291                 break;
 292         case IMX6_BMODE_MMC:
 293         case IMX6_BMODE_EMMC:
 294                 /* MMC/eMMC */
 295                 boot_dev = BOOT_DEVICE_MMC2;
 296                 break;
 297         default:
 298                 /* Default - BOOT_DEVICE_MMC1 */
 299                 printf("Wrong board boot order\n");
 300                 break;
 301         }
 302
 303         spl_boot_list[0] = boot_dev;
 304 }
 305 #endif
 306 #endif /* CONFIG_FSL_ESDHC */
 307
 308 static struct mx6ul_iomux_grp_regs mx6_grp_ioregs = {
 309         .grp_addds = 0x00000030,
 310         .grp_ddrmode_ctl = 0x00020000,
 311         .grp_b0ds = 0x00000030,
 312         .grp_ctlds = 0x00000030,
 313         .grp_b1ds = 0x00000030,
 314         .grp_ddrpke = 0x00000000,
 315         .grp_ddrmode = 0x00020000,
 316         .grp_ddr_type = 0x000c0000,
 317 };
 318
 319 static struct mx6ul_iomux_ddr_regs mx6_ddr_ioregs = {
 320         .dram_dqm0 = 0x00000030,
 321         .dram_dqm1 = 0x00000030,
 322         .dram_ras = 0x00000030,
 323         .dram_cas = 0x00000030,
 324         .dram_odt0 = 0x00000030,
 325         .dram_odt1 = 0x00000030,
 326         .dram_sdba2 = 0x00000000,
 327         .dram_sdclk_0 = 0x00000008,
 328         .dram_sdqs0 = 0x00000038,
 329         .dram_sdqs1 = 0x00000030,
 330         .dram_reset = 0x00000030,
 331 };
 332
 333 static struct mx6_mmdc_calibration mx6_mmcd_calib = {
 334         .p0_mpwldectrl0 = 0x00070007,
 335         .p0_mpdgctrl0 = 0x41490145,
 336         .p0_mprddlctl = 0x40404546,
 337         .p0_mpwrdlctl = 0x4040524D,
 338 };
 339
 340 struct mx6_ddr_sysinfo ddr_sysinfo = {
 341         .dsize = 0,
 342         .cs_density = 20,
 343         .ncs = 1,
 344         .cs1_mirror = 0,
 345         .rtt_wr = 2,
 346         .rtt_nom = 1,           /* RTT_Nom = RZQ/2 */
 347         .walat = 1,             /* Write additional latency */
 348         .ralat = 5,             /* Read additional latency */
 349         .mif3_mode = 3,         /* Command prediction working mode */
 350         .bi_on = 1,             /* Bank interleaving enabled */
 351         .sde_to_rst = 0x10,     /* 14 cycles, 200us (JEDEC default) */
 352         .rst_to_cke = 0x23,     /* 33 cycles, 500us (JEDEC default) */
 353         .ddr_type = DDR_TYPE_DDR3,
 354 };
 355
 356 static struct mx6_ddr3_cfg mem_ddr = {
 357         .mem_speed = 800,
 358         .density = 4,
 359         .width = 16,
 360         .banks = 8,
 361         .rowaddr = 15,
 362         .coladdr = 10,
 363         .pagesz = 2,
 364         .trcd = 1375,
 365         .trcmin = 4875,
 366         .trasmin = 3500,
 367 };
 368
 369 static void ccgr_init(void)
 370 {
 371         struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 372
 373         writel(0x00c03f3f, &ccm->CCGR0);
 374         writel(0xfcffff00, &ccm->CCGR1);
 375         writel(0x0cffffcc, &ccm->CCGR2);
 376         writel(0x3f3c3030, &ccm->CCGR3);
 377         writel(0xff00fffc, &ccm->CCGR4);
 378         writel(0x033f30ff, &ccm->CCGR5);
 379         writel(0x00c00fff, &ccm->CCGR6);
 380 }
 381
 382 static void spl_dram_init(void)
 383 {
 384         mx6ul_dram_iocfg(mem_ddr.width, &mx6_ddr_ioregs, &mx6_grp_ioregs);
 385         mx6_dram_cfg(&ddr_sysinfo, &mx6_mmcd_calib, &mem_ddr);
 386 }
 387
 388 void board_init_f(ulong dummy)
 389 {
 390         /* setup AIPS and disable watchdog */
 391         arch_cpu_init();
 392
 393         ccgr_init();
 394
 395         /* iomux and setup of i2c */
 396         SETUP_IOMUX_PADS(uart1_pads);
 397
 398         /* setup GP timer */
 399         timer_init();
 400
 401         /* UART clocks enabled and gd valid - init serial console */
 402         preloader_console_init();
 403
 404         /* DDR initialization */
 405         spl_dram_init();
 406
 407         /* Clear the BSS. */
 408         memset(__bss_start, 0, __bss_end - __bss_start);
 409
 410         /* load/boot image from boot device */
 411         board_init_r(NULL, 0);
 412 }
 413 #endif /* CONFIG_SPL_BUILD */