arch/arm/mach-davinci/board-dm644x-evm.c

   1 /*
   2  * TI DaVinci EVM board support
   3  *
   4  * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
   5  *
   6  * 2007 (c) MontaVista Software, Inc. This file is licensed under
   7  * the terms of the GNU General Public License version 2. This program
   8  * is licensed "as is" without any warranty of any kind, whether express
   9  * or implied.
  10  */
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/dma-mapping.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/gpio.h>
  16 #include <linux/i2c.h>
  17 #include <linux/i2c/pcf857x.h>
  18 #include <linux/i2c/at24.h>
  19 #include <linux/mtd/mtd.h>
  20 #include <linux/mtd/nand.h>
  21 #include <linux/mtd/partitions.h>
  22 #include <linux/mtd/physmap.h>
  23 #include <linux/phy.h>
  24 #include <linux/clk.h>
  25 #include <linux/videodev2.h>
  26
  27 #include <media/tvp514x.h>
  28
  29 #include <asm/mach-types.h>
  30 #include <asm/mach/arch.h>
  31
  32 #include <mach/dm644x.h>
  33 #include <mach/common.h>
  34 #include <mach/i2c.h>
  35 #include <mach/serial.h>
  36 #include <mach/mux.h>
  37 #include <mach/nand.h>
  38 #include <mach/mmc.h>
  39 #include <mach/usb.h>
  40
  41 #define DM644X_EVM_PHY_MASK             (0x2)
  42 #define DM644X_EVM_MDIO_FREQUENCY       (2200000) /* PHY bus frequency */
  43
  44 #define DAVINCI_CFC_ATA_BASE              0x01C66000
  45
  46 #define DAVINCI_ASYNC_EMIF_CONTROL_BASE   0x01e00000
  47 #define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE  0x02000000
  48 #define DAVINCI_ASYNC_EMIF_DATA_CE1_BASE  0x04000000
  49 #define DAVINCI_ASYNC_EMIF_DATA_CE2_BASE  0x06000000
  50 #define DAVINCI_ASYNC_EMIF_DATA_CE3_BASE  0x08000000
  51
  52 #define LXT971_PHY_ID   (0x001378e2)
  53 #define LXT971_PHY_MASK (0xfffffff0)
  54
  55 static struct mtd_partition davinci_evm_norflash_partitions[] = {
  56         /* bootloader (UBL, U-Boot, etc) in first 5 sectors */
  57         {
  58                 .name           = "bootloader",
  59                 .offset         = 0,
  60                 .size           = 5 * SZ_64K,
  61                 .mask_flags     = MTD_WRITEABLE, /* force read-only */
  62         },
  63         /* bootloader params in the next 1 sectors */
  64         {
  65                 .name           = "params",
  66                 .offset         = MTDPART_OFS_APPEND,
  67                 .size           = SZ_64K,
  68                 .mask_flags     = 0,
  69         },
  70         /* kernel */
  71         {
  72                 .name           = "kernel",
  73                 .offset         = MTDPART_OFS_APPEND,
  74                 .size           = SZ_2M,
  75                 .mask_flags     = 0
  76         },
  77         /* file system */
  78         {
  79                 .name           = "filesystem",
  80                 .offset         = MTDPART_OFS_APPEND,
  81                 .size           = MTDPART_SIZ_FULL,
  82                 .mask_flags     = 0
  83         }
  84 };
  85
  86 static struct physmap_flash_data davinci_evm_norflash_data = {
  87         .width          = 2,
  88         .parts          = davinci_evm_norflash_partitions,
  89         .nr_parts       = ARRAY_SIZE(davinci_evm_norflash_partitions),
  90 };
  91
  92 /* NOTE: CFI probe will correctly detect flash part as 32M, but EMIF
  93  * limits addresses to 16M, so using addresses past 16M will wrap */
  94 static struct resource davinci_evm_norflash_resource = {
  95         .start          = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE,
  96         .end            = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_16M - 1,
  97         .flags          = IORESOURCE_MEM,
  98 };
  99
 100 static struct platform_device davinci_evm_norflash_device = {
 101         .name           = "physmap-flash",
 102         .id             = 0,
 103         .dev            = {
 104                 .platform_data  = &davinci_evm_norflash_data,
 105         },
 106         .num_resources  = 1,
 107         .resource       = &davinci_evm_norflash_resource,
 108 };
 109
 110 /* DM644x EVM includes a 64 MByte small-page NAND flash (16K blocks).
 111  * It may used instead of the (default) NOR chip to boot, using TI's
 112  * tools to install the secondary boot loader (UBL) and U-Boot.
 113  */
 114 struct mtd_partition davinci_evm_nandflash_partition[] = {
 115         /* Bootloader layout depends on whose u-boot is installed, but we
 116          * can hide all the details.
 117          *  - block 0 for u-boot environment ... in mainline u-boot
 118          *  - block 1 for UBL (plus up to four backup copies in blocks 2..5)
 119          *  - blocks 6...? for u-boot
 120          *  - blocks 16..23 for u-boot environment ... in TI's u-boot
 121          */
 122         {
 123                 .name           = "bootloader",
 124                 .offset         = 0,
 125                 .size           = SZ_256K + SZ_128K,
 126                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 127         },
 128         /* Kernel */
 129         {
 130                 .name           = "kernel",
 131                 .offset         = MTDPART_OFS_APPEND,
 132                 .size           = SZ_4M,
 133                 .mask_flags     = 0,
 134         },
 135         /* File system (older GIT kernels started this on the 5MB mark) */
 136         {
 137                 .name           = "filesystem",
 138                 .offset         = MTDPART_OFS_APPEND,
 139                 .size           = MTDPART_SIZ_FULL,
 140                 .mask_flags     = 0,
 141         }
 142         /* A few blocks at end hold a flash BBT ... created by TI's CCS
 143          * using flashwriter_nand.out, but ignored by TI's versions of
 144          * Linux and u-boot.  We boot faster by using them.
 145          */
 146 };
 147
 148 static struct davinci_nand_pdata davinci_evm_nandflash_data = {
 149         .parts          = davinci_evm_nandflash_partition,
 150         .nr_parts       = ARRAY_SIZE(davinci_evm_nandflash_partition),
 151         .ecc_mode       = NAND_ECC_HW,
 152         .options        = NAND_USE_FLASH_BBT,
 153 };
 154
 155 static struct resource davinci_evm_nandflash_resource[] = {
 156         {
 157                 .start          = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE,
 158                 .end            = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_16M - 1,
 159                 .flags          = IORESOURCE_MEM,
 160         }, {
 161                 .start          = DAVINCI_ASYNC_EMIF_CONTROL_BASE,
 162                 .end            = DAVINCI_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
 163                 .flags          = IORESOURCE_MEM,
 164         },
 165 };
 166
 167 static struct platform_device davinci_evm_nandflash_device = {
 168         .name           = "davinci_nand",
 169         .id             = 0,
 170         .dev            = {
 171                 .platform_data  = &davinci_evm_nandflash_data,
 172         },
 173         .num_resources  = ARRAY_SIZE(davinci_evm_nandflash_resource),
 174         .resource       = davinci_evm_nandflash_resource,
 175 };
 176
 177 static u64 davinci_fb_dma_mask = DMA_BIT_MASK(32);
 178
 179 static struct platform_device davinci_fb_device = {
 180         .name           = "davincifb",
 181         .id             = -1,
 182         .dev = {
 183                 .dma_mask               = &davinci_fb_dma_mask,
 184                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 185         },
 186         .num_resources = 0,
 187 };
 188
 189 static struct tvp514x_platform_data tvp5146_pdata = {
 190         .clk_polarity = 0,
 191         .hs_polarity = 1,
 192         .vs_polarity = 1
 193 };
 194
 195 #define TVP514X_STD_ALL (V4L2_STD_NTSC | V4L2_STD_PAL)
 196 /* Inputs available at the TVP5146 */
 197 static struct v4l2_input tvp5146_inputs[] = {
 198         {
 199                 .index = 0,
 200                 .name = "Composite",
 201                 .type = V4L2_INPUT_TYPE_CAMERA,
 202                 .std = TVP514X_STD_ALL,
 203         },
 204         {
 205                 .index = 1,
 206                 .name = "S-Video",
 207                 .type = V4L2_INPUT_TYPE_CAMERA,
 208                 .std = TVP514X_STD_ALL,
 209         },
 210 };
 211
 212 /*
 213  * this is the route info for connecting each input to decoder
 214  * ouput that goes to vpfe. There is a one to one correspondence
 215  * with tvp5146_inputs
 216  */
 217 static struct vpfe_route tvp5146_routes[] = {
 218         {
 219                 .input = INPUT_CVBS_VI2B,
 220                 .output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
 221         },
 222         {
 223                 .input = INPUT_SVIDEO_VI2C_VI1C,
 224                 .output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
 225         },
 226 };
 227
 228 static struct vpfe_subdev_info vpfe_sub_devs[] = {
 229         {
 230                 .name = "tvp5146",
 231                 .grp_id = 0,
 232                 .num_inputs = ARRAY_SIZE(tvp5146_inputs),
 233                 .inputs = tvp5146_inputs,
 234                 .routes = tvp5146_routes,
 235                 .can_route = 1,
 236                 .ccdc_if_params = {
 237                         .if_type = VPFE_BT656,
 238                         .hdpol = VPFE_PINPOL_POSITIVE,
 239                         .vdpol = VPFE_PINPOL_POSITIVE,
 240                 },
 241                 .board_info = {
 242                         I2C_BOARD_INFO("tvp5146", 0x5d),
 243                         .platform_data = &tvp5146_pdata,
 244                 },
 245         },
 246 };
 247
 248 static struct vpfe_config vpfe_cfg = {
 249         .num_subdevs = ARRAY_SIZE(vpfe_sub_devs),
 250         .i2c_adapter_id = 1,
 251         .sub_devs = vpfe_sub_devs,
 252         .card_name = "DM6446 EVM",
 253         .ccdc = "DM6446 CCDC",
 254 };
 255
 256 static struct platform_device rtc_dev = {
 257         .name           = "rtc_davinci_evm",
 258         .id             = -1,
 259 };
 260
 261 static struct resource ide_resources[] = {
 262         {
 263                 .start          = DAVINCI_CFC_ATA_BASE,
 264                 .end            = DAVINCI_CFC_ATA_BASE + 0x7ff,
 265                 .flags          = IORESOURCE_MEM,
 266         },
 267         {
 268                 .start          = IRQ_IDE,
 269                 .end            = IRQ_IDE,
 270                 .flags          = IORESOURCE_IRQ,
 271         },
 272 };
 273
 274 static u64 ide_dma_mask = DMA_BIT_MASK(32);
 275
 276 static struct platform_device ide_dev = {
 277         .name           = "palm_bk3710",
 278         .id             = -1,
 279         .resource       = ide_resources,
 280         .num_resources  = ARRAY_SIZE(ide_resources),
 281         .dev = {
 282                 .dma_mask               = &ide_dma_mask,
 283                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 284         },
 285 };
 286
 287 static struct snd_platform_data dm644x_evm_snd_data;
 288
 289 /*----------------------------------------------------------------------*/
 290
 291 /*
 292  * I2C GPIO expanders
 293  */
 294
 295 #define PCF_Uxx_BASE(x) (DAVINCI_N_GPIO + ((x) * 8))
 296
 297
 298 /* U2 -- LEDs */
 299
 300 static struct gpio_led evm_leds[] = {
 301         { .name = "DS8", .active_low = 1,
 302                 .default_trigger = "heartbeat", },
 303         { .name = "DS7", .active_low = 1, },
 304         { .name = "DS6", .active_low = 1, },
 305         { .name = "DS5", .active_low = 1, },
 306         { .name = "DS4", .active_low = 1, },
 307         { .name = "DS3", .active_low = 1, },
 308         { .name = "DS2", .active_low = 1,
 309                 .default_trigger = "mmc0", },
 310         { .name = "DS1", .active_low = 1,
 311                 .default_trigger = "ide-disk", },
 312 };
 313
 314 static const struct gpio_led_platform_data evm_led_data = {
 315         .num_leds       = ARRAY_SIZE(evm_leds),
 316         .leds           = evm_leds,
 317 };
 318
 319 static struct platform_device *evm_led_dev;
 320
 321 static int
 322 evm_led_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
 323 {
 324         struct gpio_led *leds = evm_leds;
 325         int status;
 326
 327         while (ngpio--) {
 328                 leds->gpio = gpio++;
 329                 leds++;
 330         }
 331
 332         /* what an extremely annoying way to be forced to handle
 333          * device unregistration ...
 334          */
 335         evm_led_dev = platform_device_alloc("leds-gpio", 0);
 336         platform_device_add_data(evm_led_dev,
 337                         &evm_led_data, sizeof evm_led_data);
 338
 339         evm_led_dev->dev.parent = &client->dev;
 340         status = platform_device_add(evm_led_dev);
 341         if (status < 0) {
 342                 platform_device_put(evm_led_dev);
 343                 evm_led_dev = NULL;
 344         }
 345         return status;
 346 }
 347
 348 static int
 349 evm_led_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
 350 {
 351         if (evm_led_dev) {
 352                 platform_device_unregister(evm_led_dev);
 353                 evm_led_dev = NULL;
 354         }
 355         return 0;
 356 }
 357
 358 static struct pcf857x_platform_data pcf_data_u2 = {
 359         .gpio_base      = PCF_Uxx_BASE(0),
 360         .setup          = evm_led_setup,
 361         .teardown       = evm_led_teardown,
 362 };
 363
 364
 365 /* U18 - A/V clock generator and user switch */
 366
 367 static int sw_gpio;
 368
 369 static ssize_t
 370 sw_show(struct device *d, struct device_attribute *a, char *buf)
 371 {
 372         char *s = gpio_get_value_cansleep(sw_gpio) ? "on\n" : "off\n";
 373
 374         strcpy(buf, s);
 375         return strlen(s);
 376 }
 377
 378 static DEVICE_ATTR(user_sw, S_IRUGO, sw_show, NULL);
 379
 380 static int
 381 evm_u18_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
 382 {
 383         int     status;
 384
 385         /* export dip switch option */
 386         sw_gpio = gpio + 7;
 387         status = gpio_request(sw_gpio, "user_sw");
 388         if (status == 0)
 389                 status = gpio_direction_input(sw_gpio);
 390         if (status == 0)
 391                 status = device_create_file(&client->dev, &dev_attr_user_sw);
 392         else
 393                 gpio_free(sw_gpio);
 394         if (status != 0)
 395                 sw_gpio = -EINVAL;
 396
 397         /* audio PLL:  48 kHz (vs 44.1 or 32), single rate (vs double) */
 398         gpio_request(gpio + 3, "pll_fs2");
 399         gpio_direction_output(gpio + 3, 0);
 400
 401         gpio_request(gpio + 2, "pll_fs1");
 402         gpio_direction_output(gpio + 2, 0);
 403
 404         gpio_request(gpio + 1, "pll_sr");
 405         gpio_direction_output(gpio + 1, 0);
 406
 407         return 0;
 408 }
 409
 410 static int
 411 evm_u18_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
 412 {
 413         gpio_free(gpio + 1);
 414         gpio_free(gpio + 2);
 415         gpio_free(gpio + 3);
 416
 417         if (sw_gpio > 0) {
 418                 device_remove_file(&client->dev, &dev_attr_user_sw);
 419                 gpio_free(sw_gpio);
 420         }
 421         return 0;
 422 }
 423
 424 static struct pcf857x_platform_data pcf_data_u18 = {
 425         .gpio_base      = PCF_Uxx_BASE(1),
 426         .n_latch        = (1 << 3) | (1 << 2) | (1 << 1),
 427         .setup          = evm_u18_setup,
 428         .teardown       = evm_u18_teardown,
 429 };
 430
 431
 432 /* U35 - various I/O signals used to manage USB, CF, ATA, etc */
 433
 434 static int
 435 evm_u35_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
 436 {
 437         /* p0 = nDRV_VBUS (initial:  don't supply it) */
 438         gpio_request(gpio + 0, "nDRV_VBUS");
 439         gpio_direction_output(gpio + 0, 1);
 440
 441         /* p1 = VDDIMX_EN */
 442         gpio_request(gpio + 1, "VDDIMX_EN");
 443         gpio_direction_output(gpio + 1, 1);
 444
 445         /* p2 = VLYNQ_EN */
 446         gpio_request(gpio + 2, "VLYNQ_EN");
 447         gpio_direction_output(gpio + 2, 1);
 448
 449         /* p3 = n3V3_CF_RESET (initial: stay in reset) */
 450         gpio_request(gpio + 3, "nCF_RESET");
 451         gpio_direction_output(gpio + 3, 0);
 452
 453         /* (p4 unused) */
 454
 455         /* p5 = 1V8_WLAN_RESET (initial: stay in reset) */
 456         gpio_request(gpio + 5, "WLAN_RESET");
 457         gpio_direction_output(gpio + 5, 1);
 458
 459         /* p6 = nATA_SEL (initial: select) */
 460         gpio_request(gpio + 6, "nATA_SEL");
 461         gpio_direction_output(gpio + 6, 0);
 462
 463         /* p7 = nCF_SEL (initial: deselect) */
 464         gpio_request(gpio + 7, "nCF_SEL");
 465         gpio_direction_output(gpio + 7, 1);
 466
 467         /* irlml6401 switches over 1A, in under 8 msec;
 468          * now it can be managed by nDRV_VBUS ...
 469          */
 470         davinci_setup_usb(1000, 8);
 471
 472         return 0;
 473 }
 474
 475 static int
 476 evm_u35_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
 477 {
 478         gpio_free(gpio + 7);
 479         gpio_free(gpio + 6);
 480         gpio_free(gpio + 5);
 481         gpio_free(gpio + 3);
 482         gpio_free(gpio + 2);
 483         gpio_free(gpio + 1);
 484         gpio_free(gpio + 0);
 485         return 0;
 486 }
 487
 488 static struct pcf857x_platform_data pcf_data_u35 = {
 489         .gpio_base      = PCF_Uxx_BASE(2),
 490         .setup          = evm_u35_setup,
 491         .teardown       = evm_u35_teardown,
 492 };
 493
 494 /*----------------------------------------------------------------------*/
 495
 496 /* Most of this EEPROM is unused, but U-Boot uses some data:
 497  *  - 0x7f00, 6 bytes Ethernet Address
 498  *  - 0x0039, 1 byte NTSC vs PAL (bit 0x80 == PAL)
 499  *  - ... newer boards may have more
 500  */
 501
 502 static struct at24_platform_data eeprom_info = {
 503         .byte_len       = (256*1024) / 8,
 504         .page_size      = 64,
 505         .flags          = AT24_FLAG_ADDR16,
 506         .setup          = davinci_get_mac_addr,
 507         .context        = (void *)0x7f00,
 508 };
 509
 510 /*
 511  * MSP430 supports RTC, card detection, input from IR remote, and
 512  * a bit more.  It triggers interrupts on GPIO(7) from pressing
 513  * buttons on the IR remote, and for card detect switches.
 514  */
 515 static struct i2c_client *dm6446evm_msp;
 516
 517 static int dm6446evm_msp_probe(struct i2c_client *client,
 518                 const struct i2c_device_id *id)
 519 {
 520         dm6446evm_msp = client;
 521         return 0;
 522 }
 523
 524 static int dm6446evm_msp_remove(struct i2c_client *client)
 525 {
 526         dm6446evm_msp = NULL;
 527         return 0;
 528 }
 529
 530 static const struct i2c_device_id dm6446evm_msp_ids[] = {
 531         { "dm6446evm_msp", 0, },
 532         { /* end of list */ },
 533 };
 534
 535 static struct i2c_driver dm6446evm_msp_driver = {
 536         .driver.name    = "dm6446evm_msp",
 537         .id_table       = dm6446evm_msp_ids,
 538         .probe          = dm6446evm_msp_probe,
 539         .remove         = dm6446evm_msp_remove,
 540 };
 541
 542 static int dm6444evm_msp430_get_pins(void)
 543 {
 544         static const char txbuf[2] = { 2, 4, };
 545         char buf[4];
 546         struct i2c_msg msg[2] = {
 547                 {
 548                         .addr = dm6446evm_msp->addr,
 549                         .flags = 0,
 550                         .len = 2,
 551                         .buf = (void __force *)txbuf,
 552                 },
 553                 {
 554                         .addr = dm6446evm_msp->addr,
 555                         .flags = I2C_M_RD,
 556                         .len = 4,
 557                         .buf = buf,
 558                 },
 559         };
 560         int status;
 561
 562         if (!dm6446evm_msp)
 563                 return -ENXIO;
 564
 565         /* Command 4 == get input state, returns port 2 and port3 data
 566          *   S Addr W [A] len=2 [A] cmd=4 [A]
 567          *   RS Addr R [A] [len=4] A [cmd=4] A [port2] A [port3] N P
 568          */
 569         status = i2c_transfer(dm6446evm_msp->adapter, msg, 2);
 570         if (status < 0)
 571                 return status;
 572
 573         dev_dbg(&dm6446evm_msp->dev,
 574                 "PINS: %02x %02x %02x %02x\n",
 575                 buf[0], buf[1], buf[2], buf[3]);
 576
 577         return (buf[3] << 8) | buf[2];
 578 }
 579
 580 static int dm6444evm_mmc_get_cd(int module)
 581 {
 582         int status = dm6444evm_msp430_get_pins();
 583
 584         return (status < 0) ? status : !(status & BIT(1));
 585 }
 586
 587 static int dm6444evm_mmc_get_ro(int module)
 588 {
 589         int status = dm6444evm_msp430_get_pins();
 590
 591         return (status < 0) ? status : status & BIT(6 + 8);
 592 }
 593
 594 static struct davinci_mmc_config dm6446evm_mmc_config = {
 595         .get_cd         = dm6444evm_mmc_get_cd,
 596         .get_ro         = dm6444evm_mmc_get_ro,
 597         .wires          = 4,
 598         .version        = MMC_CTLR_VERSION_1
 599 };
 600
 601 static struct i2c_board_info __initdata i2c_info[] =  {
 602         {
 603                 I2C_BOARD_INFO("dm6446evm_msp", 0x23),
 604         },
 605         {
 606                 I2C_BOARD_INFO("pcf8574", 0x38),
 607                 .platform_data  = &pcf_data_u2,
 608         },
 609         {
 610                 I2C_BOARD_INFO("pcf8574", 0x39),
 611                 .platform_data  = &pcf_data_u18,
 612         },
 613         {
 614                 I2C_BOARD_INFO("pcf8574", 0x3a),
 615                 .platform_data  = &pcf_data_u35,
 616         },
 617         {
 618                 I2C_BOARD_INFO("24c256", 0x50),
 619                 .platform_data  = &eeprom_info,
 620         },
 621         {
 622                 I2C_BOARD_INFO("tlv320aic33", 0x1b),
 623         },
 624 };
 625
 626 /* The msp430 uses a slow bitbanged I2C implementation (ergo 20 KHz),
 627  * which requires 100 usec of idle bus after i2c writes sent to it.
 628  */
 629 static struct davinci_i2c_platform_data i2c_pdata = {
 630         .bus_freq       = 20 /* kHz */,
 631         .bus_delay      = 100 /* usec */,
 632 };
 633
 634 static void __init evm_init_i2c(void)
 635 {
 636         davinci_init_i2c(&i2c_pdata);
 637         i2c_add_driver(&dm6446evm_msp_driver);
 638         i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
 639 }
 640
 641 static struct platform_device *davinci_evm_devices[] __initdata = {
 642         &davinci_fb_device,
 643         &rtc_dev,
 644 };
 645
 646 static struct davinci_uart_config uart_config __initdata = {
 647         .enabled_uarts = (1 << 0),
 648 };
 649
 650 static void __init
 651 davinci_evm_map_io(void)
 652 {
 653         /* setup input configuration for VPFE input devices */
 654         dm644x_set_vpfe_config(&vpfe_cfg);
 655         dm644x_init();
 656 }
 657
 658 static int davinci_phy_fixup(struct phy_device *phydev)
 659 {
 660         unsigned int control;
 661         /* CRITICAL: Fix for increasing PHY signal drive strength for
 662          * TX lockup issue. On DaVinci EVM, the Intel LXT971 PHY
 663          * signal strength was low causing  TX to fail randomly. The
 664          * fix is to Set bit 11 (Increased MII drive strength) of PHY
 665          * register 26 (Digital Config register) on this phy. */
 666         control = phy_read(phydev, 26);
 667         phy_write(phydev, 26, (control | 0x800));
 668         return 0;
 669 }
 670
 671 #if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \
 672     defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE)
 673 #define HAS_ATA 1
 674 #else
 675 #define HAS_ATA 0
 676 #endif
 677
 678 #if defined(CONFIG_MTD_PHYSMAP) || \
 679     defined(CONFIG_MTD_PHYSMAP_MODULE)
 680 #define HAS_NOR 1
 681 #else
 682 #define HAS_NOR 0
 683 #endif
 684
 685 #if defined(CONFIG_MTD_NAND_DAVINCI) || \
 686     defined(CONFIG_MTD_NAND_DAVINCI_MODULE)
 687 #define HAS_NAND 1
 688 #else
 689 #define HAS_NAND 0
 690 #endif
 691
 692 static __init void davinci_evm_init(void)
 693 {
 694         struct clk *aemif_clk;
 695         struct davinci_soc_info *soc_info = &davinci_soc_info;
 696
 697         aemif_clk = clk_get(NULL, "aemif");
 698         clk_enable(aemif_clk);
 699
 700         if (HAS_ATA) {
 701                 if (HAS_NAND || HAS_NOR)
 702                         pr_warning("WARNING: both IDE and Flash are "
 703                                 "enabled, but they share AEMIF pins.\n"
 704                                 "\tDisable IDE for NAND/NOR support.\n");
 705                 davinci_cfg_reg(DM644X_HPIEN_DISABLE);
 706                 davinci_cfg_reg(DM644X_ATAEN);
 707                 davinci_cfg_reg(DM644X_HDIREN);
 708                 platform_device_register(&ide_dev);
 709         } else if (HAS_NAND || HAS_NOR) {
 710                 davinci_cfg_reg(DM644X_HPIEN_DISABLE);
 711                 davinci_cfg_reg(DM644X_ATAEN_DISABLE);
 712
 713                 /* only one device will be jumpered and detected */
 714                 if (HAS_NAND) {
 715                         platform_device_register(&davinci_evm_nandflash_device);
 716                         evm_leds[7].default_trigger = "nand-disk";
 717                         if (HAS_NOR)
 718                                 pr_warning("WARNING: both NAND and NOR flash "
 719                                         "are enabled; disable one of them.\n");
 720                 } else if (HAS_NOR)
 721                         platform_device_register(&davinci_evm_norflash_device);
 722         }
 723
 724         platform_add_devices(davinci_evm_devices,
 725                              ARRAY_SIZE(davinci_evm_devices));
 726         evm_init_i2c();
 727
 728         davinci_setup_mmc(0, &dm6446evm_mmc_config);
 729
 730         davinci_serial_init(&uart_config);
 731         dm644x_init_asp(&dm644x_evm_snd_data);
 732
 733         soc_info->emac_pdata->phy_mask = DM644X_EVM_PHY_MASK;
 734         soc_info->emac_pdata->mdio_max_freq = DM644X_EVM_MDIO_FREQUENCY;
 735
 736         /* Register the fixup for PHY on DaVinci */
 737         phy_register_fixup_for_uid(LXT971_PHY_ID, LXT971_PHY_MASK,
 738                                         davinci_phy_fixup);
 739
 740 }
 741
 742 static __init void davinci_evm_irq_init(void)
 743 {
 744         davinci_irq_init();
 745 }
 746
 747 MACHINE_START(DAVINCI_EVM, "DaVinci DM644x EVM")
 748         /* Maintainer: MontaVista Software <source@mvista.com> */
 749         .phys_io      = IO_PHYS,
 750         .io_pg_offst  = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
 751         .boot_params  = (DAVINCI_DDR_BASE + 0x100),
 752         .map_io       = davinci_evm_map_io,
 753         .init_irq     = davinci_evm_irq_init,
 754         .timer        = &davinci_timer,
 755         .init_machine = davinci_evm_init,
 756 MACHINE_END