board/siemens/rut/board.c

   1 /*
   2  * Board functions for TI AM335X based rut board
   3  * (C) Copyright 2013 Siemens Schweiz AG
   4  * (C) Heiko Schocher, DENX Software Engineering, hs@denx.de.
   5  *
   6  * Based on:
   7  * u-boot:/board/ti/am335x/board.c
   8  *
   9  * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
  10  *
  11  * SPDX-License-Identifier:     GPL-2.0+
  12  */
  13
  14 #include <common.h>
  15 #include <errno.h>
  16 #include <spi.h>
  17 #include <spl.h>
  18 #include <asm/arch/cpu.h>
  19 #include <asm/arch/hardware.h>
  20 #include <asm/arch/omap.h>
  21 #include <asm/arch/ddr_defs.h>
  22 #include <asm/arch/clock.h>
  23 #include <asm/arch/gpio.h>
  24 #include <asm/arch/mmc_host_def.h>
  25 #include <asm/arch/sys_proto.h>
  26 #include <asm/io.h>
  27 #include <asm/emif.h>
  28 #include <asm/gpio.h>
  29 #include <i2c.h>
  30 #include <miiphy.h>
  31 #include <cpsw.h>
  32 #include <video.h>
  33 #include <watchdog.h>
  34 #include "board.h"
  35 #include "../common/factoryset.h"
  36 #include "../../../drivers/video/da8xx-fb.h"
  37
  38 DECLARE_GLOBAL_DATA_PTR;
  39
  40 /*
  41  * Read header information from EEPROM into global structure.
  42  */
  43 static int read_eeprom(void)
  44 {
  45         return 0;
  46 }
  47
  48 #ifdef CONFIG_SPL_BUILD
  49 static void board_init_ddr(void)
  50 {
  51 struct emif_regs rut_ddr3_emif_reg_data = {
  52         .sdram_config = 0x61C04AB2,
  53         .sdram_tim1 = 0x0888A39B,
  54         .sdram_tim2 = 0x26337FDA,
  55         .sdram_tim3 = 0x501F830F,
  56         .emif_ddr_phy_ctlr_1 = 0x6,
  57         .zq_config = 0x50074BE4,
  58         .ref_ctrl = 0x93B,
  59 };
  60
  61 struct ddr_data rut_ddr3_data = {
  62         .datardsratio0 = 0x3b,
  63         .datawdsratio0 = 0x85,
  64         .datafwsratio0 = 0x100,
  65         .datawrsratio0 = 0xc1,
  66 };
  67
  68 struct cmd_control rut_ddr3_cmd_ctrl_data = {
  69         .cmd0csratio = 0x40,
  70         .cmd0iclkout = 1,
  71         .cmd1csratio = 0x40,
  72         .cmd1iclkout = 1,
  73         .cmd2csratio = 0x40,
  74         .cmd2iclkout = 1,
  75 };
  76
  77 const struct ctrl_ioregs ioregs = {
  78         .cm0ioctl               = RUT_IOCTRL_VAL,
  79         .cm1ioctl               = RUT_IOCTRL_VAL,
  80         .cm2ioctl               = RUT_IOCTRL_VAL,
  81         .dt0ioctl               = RUT_IOCTRL_VAL,
  82         .dt1ioctl               = RUT_IOCTRL_VAL,
  83 };
  84
  85         config_ddr(DDR_PLL_FREQ, &ioregs, &rut_ddr3_data,
  86                    &rut_ddr3_cmd_ctrl_data, &rut_ddr3_emif_reg_data, 0);
  87 }
  88
  89 static int request_and_pulse_reset(int gpio, const char *name)
  90 {
  91         int ret;
  92         const int delay_us = 2000; /* 2ms */
  93
  94         ret = gpio_request(gpio, name);
  95         if (ret < 0) {
  96                 printf("%s: Unable to request %s\n", __func__, name);
  97                 goto err;
  98         }
  99
 100         ret = gpio_direction_output(gpio, 0);
 101         if (ret < 0) {
 102                 printf("%s: Unable to set %s  as output\n", __func__, name);
 103                 goto err_free_gpio;
 104         }
 105
 106         udelay(delay_us);
 107
 108         gpio_set_value(gpio, 1);
 109
 110         return 0;
 111
 112 err_free_gpio:
 113         gpio_free(gpio);
 114 err:
 115         return ret;
 116 }
 117
 118 #define GPIO_TO_PIN(bank, gpio)         (32 * (bank) + (gpio))
 119 #define ETH_PHY_RESET_GPIO              GPIO_TO_PIN(2, 18)
 120 #define MAXTOUCH_RESET_GPIO             GPIO_TO_PIN(3, 18)
 121 #define DISPLAY_RESET_GPIO              GPIO_TO_PIN(3, 19)
 122
 123 #define REQUEST_AND_PULSE_RESET(N) \
 124                 request_and_pulse_reset(N, #N);
 125
 126 static void spl_siemens_board_init(void)
 127 {
 128         REQUEST_AND_PULSE_RESET(ETH_PHY_RESET_GPIO);
 129         REQUEST_AND_PULSE_RESET(MAXTOUCH_RESET_GPIO);
 130         REQUEST_AND_PULSE_RESET(DISPLAY_RESET_GPIO);
 131 }
 132 #endif /* if def CONFIG_SPL_BUILD */
 133
 134 #if defined(CONFIG_DRIVER_TI_CPSW)
 135 static void cpsw_control(int enabled)
 136 {
 137         /* VTP can be added here */
 138
 139         return;
 140 }
 141
 142 static struct cpsw_slave_data cpsw_slaves[] = {
 143         {
 144                 .slave_reg_ofs  = 0x208,
 145                 .sliver_reg_ofs = 0xd80,
 146                 .phy_addr       = 1,
 147                 .phy_if         = PHY_INTERFACE_MODE_RMII,
 148         },
 149         {
 150                 .slave_reg_ofs  = 0x308,
 151                 .sliver_reg_ofs = 0xdc0,
 152                 .phy_addr       = 0,
 153                 .phy_if         = PHY_INTERFACE_MODE_RMII,
 154         },
 155 };
 156
 157 static struct cpsw_platform_data cpsw_data = {
 158         .mdio_base              = CPSW_MDIO_BASE,
 159         .cpsw_base              = CPSW_BASE,
 160         .mdio_div               = 0xff,
 161         .channels               = 8,
 162         .cpdma_reg_ofs          = 0x800,
 163         .slaves                 = 1,
 164         .slave_data             = cpsw_slaves,
 165         .ale_reg_ofs            = 0xd00,
 166         .ale_entries            = 1024,
 167         .host_port_reg_ofs      = 0x108,
 168         .hw_stats_reg_ofs       = 0x900,
 169         .bd_ram_ofs             = 0x2000,
 170         .mac_control            = (1 << 5),
 171         .control                = cpsw_control,
 172         .host_port_num          = 0,
 173         .version                = CPSW_CTRL_VERSION_2,
 174 };
 175
 176 #if defined(CONFIG_DRIVER_TI_CPSW) || \
 177         (defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET))
 178 int board_eth_init(bd_t *bis)
 179 {
 180         struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
 181         int n = 0;
 182         int rv;
 183
 184 #ifndef CONFIG_SPL_BUILD
 185         factoryset_setenv();
 186 #endif
 187
 188         /* Set rgmii mode and enable rmii clock to be sourced from chip */
 189         writel((RMII_MODE_ENABLE | RMII_CHIPCKL_ENABLE), &cdev->miisel);
 190
 191         rv = cpsw_register(&cpsw_data);
 192         if (rv < 0)
 193                 printf("Error %d registering CPSW switch\n", rv);
 194         else
 195                 n += rv;
 196         return n;
 197 }
 198 #endif /* #if defined(CONFIG_DRIVER_TI_CPSW) */
 199 #endif /* #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) */
 200
 201 #if defined(CONFIG_HW_WATCHDOG)
 202 static bool hw_watchdog_init_done;
 203 static int  hw_watchdog_trigger_level;
 204
 205 void hw_watchdog_reset(void)
 206 {
 207         if (!hw_watchdog_init_done)
 208                 return;
 209
 210         hw_watchdog_trigger_level = hw_watchdog_trigger_level ? 0 : 1;
 211         gpio_set_value(WATCHDOG_TRIGGER_GPIO, hw_watchdog_trigger_level);
 212 }
 213
 214 void hw_watchdog_init(void)
 215 {
 216         gpio_request(WATCHDOG_TRIGGER_GPIO, "watchdog_trigger");
 217         gpio_direction_output(WATCHDOG_TRIGGER_GPIO, hw_watchdog_trigger_level);
 218
 219         hw_watchdog_reset();
 220
 221         hw_watchdog_init_done = 1;
 222 }
 223 #endif /* defined(CONFIG_HW_WATCHDOG) */
 224
 225 #if defined(CONFIG_VIDEO) && !defined(CONFIG_SPL_BUILD)
 226 static struct da8xx_panel lcd_panels[] = {
 227         /* FORMIKE, 4.3", 480x800, KWH043MC17-F01 */
 228         [0] = {
 229                 .name   = "KWH043MC17-F01",
 230                 .width  = 480,
 231                 .height = 800,
 232                 .hfp = 50,              /* no spec, "don't care" values */
 233                 .hbp = 50,
 234                 .hsw = 50,
 235                 .vfp = 50,
 236                 .vbp = 50,
 237                 .vsw = 50,
 238                 .pxl_clk = 35910000,    /* tCYCD=20ns, max 50MHz, 60fps */
 239                 .invert_pxl_clk = 1,
 240         },
 241         /* FORMIKE, 4.3", 480x800, KWH043ST20-F01 */
 242         [1] = {
 243                 .name   = "KWH043ST20-F01",
 244                 .width  = 480,
 245                 .height = 800,
 246                 .hfp = 50,              /* no spec, "don't care" values */
 247                 .hbp = 50,
 248                 .hsw = 50,
 249                 .vfp = 50,
 250                 .vbp = 50,
 251                 .vsw = 50,
 252                 .pxl_clk = 35910000,    /* tCYCD=20ns, max 50MHz, 60fps */
 253                 .invert_pxl_clk = 1,
 254         },
 255         /* Multi-Inno, 4.3", 480x800, MI0430VT-1 */
 256         [2] = {
 257                 .name   = "MI0430VT-1",
 258                 .width  = 480,
 259                 .height = 800,
 260                 .hfp = 50,              /* no spec, "don't care" values */
 261                 .hbp = 50,
 262                 .hsw = 50,
 263                 .vfp = 50,
 264                 .vbp = 50,
 265                 .vsw = 50,
 266                 .pxl_clk = 35910000,    /* tCYCD=20ns, max 50MHz, 60fps */
 267                 .invert_pxl_clk = 1,
 268         },
 269 };
 270
 271 static const struct display_panel disp_panels[] = {
 272         [0] = {
 273                 WVGA,
 274                 16,     /* RGB 888 */
 275                 16,
 276                 COLOR_ACTIVE,
 277         },
 278         [1] = {
 279                 WVGA,
 280                 16,     /* RGB 888 */
 281                 16,
 282                 COLOR_ACTIVE,
 283         },
 284         [2] = {
 285                 WVGA,
 286                 24,     /* RGB 888 */
 287                 16,
 288                 COLOR_ACTIVE,
 289         },
 290 };
 291
 292 static const struct lcd_ctrl_config lcd_cfgs[] = {
 293         [0] = {
 294                 &disp_panels[0],
 295                 .ac_bias                = 255,
 296                 .ac_bias_intrpt         = 0,
 297                 .dma_burst_sz           = 16,
 298                 .bpp                    = 16,
 299                 .fdd                    = 0x80,
 300                 .tft_alt_mode           = 0,
 301                 .stn_565_mode           = 0,
 302                 .mono_8bit_mode         = 0,
 303                 .invert_line_clock      = 1,
 304                 .invert_frm_clock       = 1,
 305                 .sync_edge              = 0,
 306                 .sync_ctrl              = 1,
 307                 .raster_order           = 0,
 308         },
 309         [1] = {
 310                 &disp_panels[1],
 311                 .ac_bias                = 255,
 312                 .ac_bias_intrpt         = 0,
 313                 .dma_burst_sz           = 16,
 314                 .bpp                    = 16,
 315                 .fdd                    = 0x80,
 316                 .tft_alt_mode           = 0,
 317                 .stn_565_mode           = 0,
 318                 .mono_8bit_mode         = 0,
 319                 .invert_line_clock      = 1,
 320                 .invert_frm_clock       = 1,
 321                 .sync_edge              = 0,
 322                 .sync_ctrl              = 1,
 323                 .raster_order           = 0,
 324         },
 325         [2] = {
 326                 &disp_panels[2],
 327                 .ac_bias                = 255,
 328                 .ac_bias_intrpt         = 0,
 329                 .dma_burst_sz           = 16,
 330                 .bpp                    = 24,
 331                 .fdd                    = 0x80,
 332                 .tft_alt_mode           = 0,
 333                 .stn_565_mode           = 0,
 334                 .mono_8bit_mode         = 0,
 335                 .invert_line_clock      = 1,
 336                 .invert_frm_clock       = 1,
 337                 .sync_edge              = 0,
 338                 .sync_ctrl              = 1,
 339                 .raster_order           = 0,
 340         },
 341
 342 };
 343
 344 /* no console on this board */
 345 int board_cfb_skip(void)
 346 {
 347         return 1;
 348 }
 349
 350 #define PLL_GET_M(v) ((v >> 8) & 0x7ff)
 351 #define PLL_GET_N(v) (v & 0x7f)
 352
 353 static struct dpll_regs dpll_lcd_regs = {
 354         .cm_clkmode_dpll = CM_WKUP + 0x98,
 355         .cm_idlest_dpll = CM_WKUP + 0x48,
 356         .cm_clksel_dpll = CM_WKUP + 0x54,
 357 };
 358
 359 static int get_clk(struct dpll_regs *dpll_regs)
 360 {
 361         unsigned int val;
 362         unsigned int m, n;
 363         int f = 0;
 364
 365         val = readl(dpll_regs->cm_clksel_dpll);
 366         m = PLL_GET_M(val);
 367         n = PLL_GET_N(val);
 368         f = (m * V_OSCK) / n;
 369
 370         return f;
 371 };
 372
 373 int clk_get(int clk)
 374 {
 375         return get_clk(&dpll_lcd_regs);
 376 };
 377
 378 static int conf_disp_pll(int m, int n)
 379 {
 380         struct cm_perpll *cmper = (struct cm_perpll *)CM_PER;
 381         struct dpll_params dpll_lcd = {m, n, -1, -1, -1, -1, -1};
 382 #if defined(DISPL_PLL_SPREAD_SPECTRUM)
 383         struct cm_wkuppll *cmwkup = (struct cm_wkuppll *)CM_WKUP;
 384 #endif
 385
 386         u32 *const clk_domains[] = {
 387                 &cmper->lcdclkctrl,
 388                 0
 389         };
 390         u32 *const clk_modules_explicit_en[] = {
 391                 &cmper->lcdclkctrl,
 392                 &cmper->lcdcclkstctrl,
 393                 &cmper->spi1clkctrl,
 394                 0
 395         };
 396         do_enable_clocks(clk_domains, clk_modules_explicit_en, 1);
 397
 398         do_setup_dpll(&dpll_lcd_regs, &dpll_lcd);
 399
 400 #if defined(DISPL_PLL_SPREAD_SPECTRUM)
 401         writel(0x64, &cmwkup->resv6[3]); /* 0x50 */
 402         writel(0x800, &cmwkup->resv6[2]); /* 0x4c */
 403         writel(readl(&cmwkup->clkmoddplldisp) | CM_CLKMODE_DPLL_SSC_EN_MASK,
 404                &cmwkup->clkmoddplldisp); /* 0x98 */
 405 #endif
 406         return 0;
 407 }
 408
 409 static int set_gpio(int gpio, int state)
 410 {
 411         gpio_request(gpio, "temp");
 412         gpio_direction_output(gpio, state);
 413         gpio_set_value(gpio, state);
 414         gpio_free(gpio);
 415         return 0;
 416 }
 417
 418 static int enable_lcd(void)
 419 {
 420         unsigned char buf[1];
 421
 422         set_gpio(BOARD_LCD_RESET, 0);
 423         mdelay(1);
 424         set_gpio(BOARD_LCD_RESET, 1);
 425         mdelay(1);
 426
 427         /* spi lcd init */
 428         kwh043st20_f01_spi_startup(1, 0, 5000000, SPI_MODE_0);
 429
 430         /* backlight on */
 431         buf[0] = 0xf;
 432         i2c_write(0x24, 0x7, 1, buf, 1);
 433         buf[0] = 0x3f;
 434         i2c_write(0x24, 0x8, 1, buf, 1);
 435         return 0;
 436 }
 437
 438 int arch_early_init_r(void)
 439 {
 440         enable_lcd();
 441         return 0;
 442 }
 443
 444 static int board_video_init(void)
 445 {
 446         int i;
 447         int anzdisp = ARRAY_SIZE(lcd_panels);
 448         int display = 1;
 449
 450         for (i = 0; i < anzdisp; i++) {
 451                 if (strncmp((const char *)factory_dat.disp_name,
 452                             lcd_panels[i].name,
 453                     strlen((const char *)factory_dat.disp_name)) == 0) {
 454                         printf("DISPLAY: %s\n", factory_dat.disp_name);
 455                         break;
 456                 }
 457         }
 458         if (i == anzdisp) {
 459                 i = 1;
 460                 printf("%s: %s not found, using default %s\n", __func__,
 461                        factory_dat.disp_name, lcd_panels[i].name);
 462         }
 463         conf_disp_pll(24, 1);
 464         da8xx_video_init(&lcd_panels[display], &lcd_cfgs[display],
 465                          lcd_cfgs[display].bpp);
 466
 467         return 0;
 468 }
 469 #endif /* ifdef CONFIG_VIDEO */
 470 #include "../common/board.c"