linux/arch/arm/mach-davinci/board-dm644x-evm.c
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   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/module.h>
  13#include <linux/init.h>
  14#include <linux/dma-mapping.h>
  15#include <linux/platform_device.h>
  16#include <linux/gpio.h>
  17#include <linux/leds.h>
  18#include <linux/memory.h>
  19
  20#include <linux/i2c.h>
  21#include <linux/i2c/pcf857x.h>
  22#include <linux/i2c/at24.h>
  23#include <linux/etherdevice.h>
  24#include <linux/mtd/mtd.h>
  25#include <linux/mtd/nand.h>
  26#include <linux/mtd/partitions.h>
  27#include <linux/mtd/physmap.h>
  28#include <linux/io.h>
  29#include <linux/phy.h>
  30#include <linux/clk.h>
  31#include <linux/videodev2.h>
  32
  33#include <media/tvp514x.h>
  34
  35#include <asm/setup.h>
  36#include <asm/mach-types.h>
  37
  38#include <asm/mach/arch.h>
  39#include <asm/mach/map.h>
  40#include <asm/mach/flash.h>
  41
  42#include <mach/dm644x.h>
  43#include <mach/common.h>
  44#include <mach/i2c.h>
  45#include <mach/serial.h>
  46#include <mach/mux.h>
  47#include <mach/psc.h>
  48#include <mach/nand.h>
  49#include <mach/mmc.h>
  50#include <mach/emac.h>
  51
  52#define DM644X_EVM_PHY_MASK             (0x2)
  53#define DM644X_EVM_MDIO_FREQUENCY       (2200000) /* PHY bus frequency */
  54
  55#define DAVINCI_CFC_ATA_BASE              0x01C66000
  56
  57#define DAVINCI_ASYNC_EMIF_CONTROL_BASE   0x01e00000
  58#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE  0x02000000
  59#define DAVINCI_ASYNC_EMIF_DATA_CE1_BASE  0x04000000
  60#define DAVINCI_ASYNC_EMIF_DATA_CE2_BASE  0x06000000
  61#define DAVINCI_ASYNC_EMIF_DATA_CE3_BASE  0x08000000
  62
  63#define LXT971_PHY_ID   (0x001378e2)
  64#define LXT971_PHY_MASK (0xfffffff0)
  65
  66static struct mtd_partition davinci_evm_norflash_partitions[] = {
  67        /* bootloader (UBL, U-Boot, etc) in first 5 sectors */
  68        {
  69                .name           = "bootloader",
  70                .offset         = 0,
  71                .size           = 5 * SZ_64K,
  72                .mask_flags     = MTD_WRITEABLE, /* force read-only */
  73        },
  74        /* bootloader params in the next 1 sectors */
  75        {
  76                .name           = "params",
  77                .offset         = MTDPART_OFS_APPEND,
  78                .size           = SZ_64K,
  79                .mask_flags     = 0,
  80        },
  81        /* kernel */
  82        {
  83                .name           = "kernel",
  84                .offset         = MTDPART_OFS_APPEND,
  85                .size           = SZ_2M,
  86                .mask_flags     = 0
  87        },
  88        /* file system */
  89        {
  90                .name           = "filesystem",
  91                .offset         = MTDPART_OFS_APPEND,
  92                .size           = MTDPART_SIZ_FULL,
  93                .mask_flags     = 0
  94        }
  95};
  96
  97static struct physmap_flash_data davinci_evm_norflash_data = {
  98        .width          = 2,
  99        .parts          = davinci_evm_norflash_partitions,
 100        .nr_parts       = ARRAY_SIZE(davinci_evm_norflash_partitions),
 101};
 102
 103/* NOTE: CFI probe will correctly detect flash part as 32M, but EMIF
 104 * limits addresses to 16M, so using addresses past 16M will wrap */
 105static struct resource davinci_evm_norflash_resource = {
 106        .start          = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE,
 107        .end            = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_16M - 1,
 108        .flags          = IORESOURCE_MEM,
 109};
 110
 111static struct platform_device davinci_evm_norflash_device = {
 112        .name           = "physmap-flash",
 113        .id             = 0,
 114        .dev            = {
 115                .platform_data  = &davinci_evm_norflash_data,
 116        },
 117        .num_resources  = 1,
 118        .resource       = &davinci_evm_norflash_resource,
 119};
 120
 121/* DM644x EVM includes a 64 MByte small-page NAND flash (16K blocks).
 122 * It may used instead of the (default) NOR chip to boot, using TI's
 123 * tools to install the secondary boot loader (UBL) and U-Boot.
 124 */
 125struct mtd_partition davinci_evm_nandflash_partition[] = {
 126        /* Bootloader layout depends on whose u-boot is installed, but we
 127         * can hide all the details.
 128         *  - block 0 for u-boot environment ... in mainline u-boot
 129         *  - block 1 for UBL (plus up to four backup copies in blocks 2..5)
 130         *  - blocks 6...? for u-boot
 131         *  - blocks 16..23 for u-boot environment ... in TI's u-boot
 132         */
 133        {
 134                .name           = "bootloader",
 135                .offset         = 0,
 136                .size           = SZ_256K + SZ_128K,
 137                .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 138        },
 139        /* Kernel */
 140        {
 141                .name           = "kernel",
 142                .offset         = MTDPART_OFS_APPEND,
 143                .size           = SZ_4M,
 144                .mask_flags     = 0,
 145        },
 146        /* File system (older GIT kernels started this on the 5MB mark) */
 147        {
 148                .name           = "filesystem",
 149                .offset         = MTDPART_OFS_APPEND,
 150                .size           = MTDPART_SIZ_FULL,
 151                .mask_flags     = 0,
 152        }
 153        /* A few blocks at end hold a flash BBT ... created by TI's CCS
 154         * using flashwriter_nand.out, but ignored by TI's versions of
 155         * Linux and u-boot.  We boot faster by using them.
 156         */
 157};
 158
 159static struct davinci_nand_pdata davinci_evm_nandflash_data = {
 160        .parts          = davinci_evm_nandflash_partition,
 161        .nr_parts       = ARRAY_SIZE(davinci_evm_nandflash_partition),
 162        .ecc_mode       = NAND_ECC_HW,
 163        .options        = NAND_USE_FLASH_BBT,
 164};
 165
 166static struct resource davinci_evm_nandflash_resource[] = {
 167        {
 168                .start          = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE,
 169                .end            = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_16M - 1,
 170                .flags          = IORESOURCE_MEM,
 171        }, {
 172                .start          = DAVINCI_ASYNC_EMIF_CONTROL_BASE,
 173                .end            = DAVINCI_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
 174                .flags          = IORESOURCE_MEM,
 175        },
 176};
 177
 178static struct platform_device davinci_evm_nandflash_device = {
 179        .name           = "davinci_nand",
 180        .id             = 0,
 181        .dev            = {
 182                .platform_data  = &davinci_evm_nandflash_data,
 183        },
 184        .num_resources  = ARRAY_SIZE(davinci_evm_nandflash_resource),
 185        .resource       = davinci_evm_nandflash_resource,
 186};
 187
 188static u64 davinci_fb_dma_mask = DMA_BIT_MASK(32);
 189
 190static struct platform_device davinci_fb_device = {
 191        .name           = "davincifb",
 192        .id             = -1,
 193        .dev = {
 194                .dma_mask               = &davinci_fb_dma_mask,
 195                .coherent_dma_mask      = DMA_BIT_MASK(32),
 196        },
 197        .num_resources = 0,
 198};
 199
 200static struct tvp514x_platform_data tvp5146_pdata = {
 201        .clk_polarity = 0,
 202        .hs_polarity = 1,
 203        .vs_polarity = 1
 204};
 205
 206#define TVP514X_STD_ALL (V4L2_STD_NTSC | V4L2_STD_PAL)
 207/* Inputs available at the TVP5146 */
 208static struct v4l2_input tvp5146_inputs[] = {
 209        {
 210                .index = 0,
 211                .name = "Composite",
 212                .type = V4L2_INPUT_TYPE_CAMERA,
 213                .std = TVP514X_STD_ALL,
 214        },
 215        {
 216                .index = 1,
 217                .name = "S-Video",
 218                .type = V4L2_INPUT_TYPE_CAMERA,
 219                .std = TVP514X_STD_ALL,
 220        },
 221};
 222
 223/*
 224 * this is the route info for connecting each input to decoder
 225 * ouput that goes to vpfe. There is a one to one correspondence
 226 * with tvp5146_inputs
 227 */
 228static struct vpfe_route tvp5146_routes[] = {
 229        {
 230                .input = INPUT_CVBS_VI2B,
 231                .output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
 232        },
 233        {
 234                .input = INPUT_SVIDEO_VI2C_VI1C,
 235                .output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
 236        },
 237};
 238
 239static struct vpfe_subdev_info vpfe_sub_devs[] = {
 240        {
 241                .name = "tvp5146",
 242                .grp_id = 0,
 243                .num_inputs = ARRAY_SIZE(tvp5146_inputs),
 244                .inputs = tvp5146_inputs,
 245                .routes = tvp5146_routes,
 246                .can_route = 1,
 247                .ccdc_if_params = {
 248                        .if_type = VPFE_BT656,
 249                        .hdpol = VPFE_PINPOL_POSITIVE,
 250                        .vdpol = VPFE_PINPOL_POSITIVE,
 251                },
 252                .board_info = {
 253                        I2C_BOARD_INFO("tvp5146", 0x5d),
 254                        .platform_data = &tvp5146_pdata,
 255                },
 256        },
 257};
 258
 259static struct vpfe_config vpfe_cfg = {
 260        .num_subdevs = ARRAY_SIZE(vpfe_sub_devs),
 261        .sub_devs = vpfe_sub_devs,
 262        .card_name = "DM6446 EVM",
 263        .ccdc = "DM6446 CCDC",
 264};
 265
 266static struct platform_device rtc_dev = {
 267        .name           = "rtc_davinci_evm",
 268        .id             = -1,
 269};
 270
 271static struct resource ide_resources[] = {
 272        {
 273                .start          = DAVINCI_CFC_ATA_BASE,
 274                .end            = DAVINCI_CFC_ATA_BASE + 0x7ff,
 275                .flags          = IORESOURCE_MEM,
 276        },
 277        {
 278                .start          = IRQ_IDE,
 279                .end            = IRQ_IDE,
 280                .flags          = IORESOURCE_IRQ,
 281        },
 282};
 283
 284static u64 ide_dma_mask = DMA_BIT_MASK(32);
 285
 286static struct platform_device ide_dev = {
 287        .name           = "palm_bk3710",
 288        .id             = -1,
 289        .resource       = ide_resources,
 290        .num_resources  = ARRAY_SIZE(ide_resources),
 291        .dev = {
 292                .dma_mask               = &ide_dma_mask,
 293                .coherent_dma_mask      = DMA_BIT_MASK(32),
 294        },
 295};
 296
 297static struct snd_platform_data dm644x_evm_snd_data;
 298
 299/*----------------------------------------------------------------------*/
 300
 301/*
 302 * I2C GPIO expanders
 303 */
 304
 305#define PCF_Uxx_BASE(x) (DAVINCI_N_GPIO + ((x) * 8))
 306
 307
 308/* U2 -- LEDs */
 309
 310static struct gpio_led evm_leds[] = {
 311        { .name = "DS8", .active_low = 1,
 312                .default_trigger = "heartbeat", },
 313        { .name = "DS7", .active_low = 1, },
 314        { .name = "DS6", .active_low = 1, },
 315        { .name = "DS5", .active_low = 1, },
 316        { .name = "DS4", .active_low = 1, },
 317        { .name = "DS3", .active_low = 1, },
 318        { .name = "DS2", .active_low = 1,
 319                .default_trigger = "mmc0", },
 320        { .name = "DS1", .active_low = 1,
 321                .default_trigger = "ide-disk", },
 322};
 323
 324static const struct gpio_led_platform_data evm_led_data = {
 325        .num_leds       = ARRAY_SIZE(evm_leds),
 326        .leds           = evm_leds,
 327};
 328
 329static struct platform_device *evm_led_dev;
 330
 331static int
 332evm_led_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
 333{
 334        struct gpio_led *leds = evm_leds;
 335        int status;
 336
 337        while (ngpio--) {
 338                leds->gpio = gpio++;
 339                leds++;
 340        }
 341
 342        /* what an extremely annoying way to be forced to handle
 343         * device unregistration ...
 344         */
 345        evm_led_dev = platform_device_alloc("leds-gpio", 0);
 346        platform_device_add_data(evm_led_dev,
 347                        &evm_led_data, sizeof evm_led_data);
 348
 349        evm_led_dev->dev.parent = &client->dev;
 350        status = platform_device_add(evm_led_dev);
 351        if (status < 0) {
 352                platform_device_put(evm_led_dev);
 353                evm_led_dev = NULL;
 354        }
 355        return status;
 356}
 357
 358static int
 359evm_led_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
 360{
 361        if (evm_led_dev) {
 362                platform_device_unregister(evm_led_dev);
 363                evm_led_dev = NULL;
 364        }
 365        return 0;
 366}
 367
 368static struct pcf857x_platform_data pcf_data_u2 = {
 369        .gpio_base      = PCF_Uxx_BASE(0),
 370        .setup          = evm_led_setup,
 371        .teardown       = evm_led_teardown,
 372};
 373
 374
 375/* U18 - A/V clock generator and user switch */
 376
 377static int sw_gpio;
 378
 379static ssize_t
 380sw_show(struct device *d, struct device_attribute *a, char *buf)
 381{
 382        char *s = gpio_get_value_cansleep(sw_gpio) ? "on\n" : "off\n";
 383
 384        strcpy(buf, s);
 385        return strlen(s);
 386}
 387
 388static DEVICE_ATTR(user_sw, S_IRUGO, sw_show, NULL);
 389
 390static int
 391evm_u18_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
 392{
 393        int     status;
 394
 395        /* export dip switch option */
 396        sw_gpio = gpio + 7;
 397        status = gpio_request(sw_gpio, "user_sw");
 398        if (status == 0)
 399                status = gpio_direction_input(sw_gpio);
 400        if (status == 0)
 401                status = device_create_file(&client->dev, &dev_attr_user_sw);
 402        else
 403                gpio_free(sw_gpio);
 404        if (status != 0)
 405                sw_gpio = -EINVAL;
 406
 407        /* audio PLL:  48 kHz (vs 44.1 or 32), single rate (vs double) */
 408        gpio_request(gpio + 3, "pll_fs2");
 409        gpio_direction_output(gpio + 3, 0);
 410
 411        gpio_request(gpio + 2, "pll_fs1");
 412        gpio_direction_output(gpio + 2, 0);
 413
 414        gpio_request(gpio + 1, "pll_sr");
 415        gpio_direction_output(gpio + 1, 0);
 416
 417        return 0;
 418}
 419
 420static int
 421evm_u18_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
 422{
 423        gpio_free(gpio + 1);
 424        gpio_free(gpio + 2);
 425        gpio_free(gpio + 3);
 426
 427        if (sw_gpio > 0) {
 428                device_remove_file(&client->dev, &dev_attr_user_sw);
 429                gpio_free(sw_gpio);
 430        }
 431        return 0;
 432}
 433
 434static struct pcf857x_platform_data pcf_data_u18 = {
 435        .gpio_base      = PCF_Uxx_BASE(1),
 436        .n_latch        = (1 << 3) | (1 << 2) | (1 << 1),
 437        .setup          = evm_u18_setup,
 438        .teardown       = evm_u18_teardown,
 439};
 440
 441
 442/* U35 - various I/O signals used to manage USB, CF, ATA, etc */
 443
 444static int
 445evm_u35_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
 446{
 447        /* p0 = nDRV_VBUS (initial:  don't supply it) */
 448        gpio_request(gpio + 0, "nDRV_VBUS");
 449        gpio_direction_output(gpio + 0, 1);
 450
 451        /* p1 = VDDIMX_EN */
 452        gpio_request(gpio + 1, "VDDIMX_EN");
 453        gpio_direction_output(gpio + 1, 1);
 454
 455        /* p2 = VLYNQ_EN */
 456        gpio_request(gpio + 2, "VLYNQ_EN");
 457        gpio_direction_output(gpio + 2, 1);
 458
 459        /* p3 = n3V3_CF_RESET (initial: stay in reset) */
 460        gpio_request(gpio + 3, "nCF_RESET");
 461        gpio_direction_output(gpio + 3, 0);
 462
 463        /* (p4 unused) */
 464
 465        /* p5 = 1V8_WLAN_RESET (initial: stay in reset) */
 466        gpio_request(gpio + 5, "WLAN_RESET");
 467        gpio_direction_output(gpio + 5, 1);
 468
 469        /* p6 = nATA_SEL (initial: select) */
 470        gpio_request(gpio + 6, "nATA_SEL");
 471        gpio_direction_output(gpio + 6, 0);
 472
 473        /* p7 = nCF_SEL (initial: deselect) */
 474        gpio_request(gpio + 7, "nCF_SEL");
 475        gpio_direction_output(gpio + 7, 1);
 476
 477        /* irlml6401 switches over 1A, in under 8 msec;
 478         * now it can be managed by nDRV_VBUS ...
 479         */
 480        setup_usb(500, 8);
 481
 482        return 0;
 483}
 484
 485static int
 486evm_u35_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
 487{
 488        gpio_free(gpio + 7);
 489        gpio_free(gpio + 6);
 490        gpio_free(gpio + 5);
 491        gpio_free(gpio + 3);
 492        gpio_free(gpio + 2);
 493        gpio_free(gpio + 1);
 494        gpio_free(gpio + 0);
 495        return 0;
 496}
 497
 498static struct pcf857x_platform_data pcf_data_u35 = {
 499        .gpio_base      = PCF_Uxx_BASE(2),
 500        .setup          = evm_u35_setup,
 501        .teardown       = evm_u35_teardown,
 502};
 503
 504/*----------------------------------------------------------------------*/
 505
 506/* Most of this EEPROM is unused, but U-Boot uses some data:
 507 *  - 0x7f00, 6 bytes Ethernet Address
 508 *  - 0x0039, 1 byte NTSC vs PAL (bit 0x80 == PAL)
 509 *  - ... newer boards may have more
 510 */
 511
 512static struct at24_platform_data eeprom_info = {
 513        .byte_len       = (256*1024) / 8,
 514        .page_size      = 64,
 515        .flags          = AT24_FLAG_ADDR16,
 516        .setup          = davinci_get_mac_addr,
 517        .context        = (void *)0x7f00,
 518};
 519
 520/*
 521 * MSP430 supports RTC, card detection, input from IR remote, and
 522 * a bit more.  It triggers interrupts on GPIO(7) from pressing
 523 * buttons on the IR remote, and for card detect switches.
 524 */
 525static struct i2c_client *dm6446evm_msp;
 526
 527static int dm6446evm_msp_probe(struct i2c_client *client,
 528                const struct i2c_device_id *id)
 529{
 530        dm6446evm_msp = client;
 531        return 0;
 532}
 533
 534static int dm6446evm_msp_remove(struct i2c_client *client)
 535{
 536        dm6446evm_msp = NULL;
 537        return 0;
 538}
 539
 540static const struct i2c_device_id dm6446evm_msp_ids[] = {
 541        { "dm6446evm_msp", 0, },
 542        { /* end of list */ },
 543};
 544
 545static struct i2c_driver dm6446evm_msp_driver = {
 546        .driver.name    = "dm6446evm_msp",
 547        .id_table       = dm6446evm_msp_ids,
 548        .probe          = dm6446evm_msp_probe,
 549        .remove         = dm6446evm_msp_remove,
 550};
 551
 552static int dm6444evm_msp430_get_pins(void)
 553{
 554        static const char txbuf[2] = { 2, 4, };
 555        char buf[4];
 556        struct i2c_msg msg[2] = {
 557                {
 558                        .addr = dm6446evm_msp->addr,
 559                        .flags = 0,
 560                        .len = 2,
 561                        .buf = (void __force *)txbuf,
 562                },
 563                {
 564                        .addr = dm6446evm_msp->addr,
 565                        .flags = I2C_M_RD,
 566                        .len = 4,
 567                        .buf = buf,
 568                },
 569        };
 570        int status;
 571
 572        if (!dm6446evm_msp)
 573                return -ENXIO;
 574
 575        /* Command 4 == get input state, returns port 2 and port3 data
 576         *   S Addr W [A] len=2 [A] cmd=4 [A]
 577         *   RS Addr R [A] [len=4] A [cmd=4] A [port2] A [port3] N P
 578         */
 579        status = i2c_transfer(dm6446evm_msp->adapter, msg, 2);
 580        if (status < 0)
 581                return status;
 582
 583        dev_dbg(&dm6446evm_msp->dev,
 584                "PINS: %02x %02x %02x %02x\n",
 585                buf[0], buf[1], buf[2], buf[3]);
 586
 587        return (buf[3] << 8) | buf[2];
 588}
 589
 590static int dm6444evm_mmc_get_cd(int module)
 591{
 592        int status = dm6444evm_msp430_get_pins();
 593
 594        return (status < 0) ? status : !(status & BIT(1));
 595}
 596
 597static int dm6444evm_mmc_get_ro(int module)
 598{
 599        int status = dm6444evm_msp430_get_pins();
 600
 601        return (status < 0) ? status : status & BIT(6 + 8);
 602}
 603
 604static struct davinci_mmc_config dm6446evm_mmc_config = {
 605        .get_cd         = dm6444evm_mmc_get_cd,
 606        .get_ro         = dm6444evm_mmc_get_ro,
 607        .wires          = 4,
 608        .version        = MMC_CTLR_VERSION_1
 609};
 610
 611static struct i2c_board_info __initdata i2c_info[] =  {
 612        {
 613                I2C_BOARD_INFO("dm6446evm_msp", 0x23),
 614        },
 615        {
 616                I2C_BOARD_INFO("pcf8574", 0x38),
 617                .platform_data  = &pcf_data_u2,
 618        },
 619        {
 620                I2C_BOARD_INFO("pcf8574", 0x39),
 621                .platform_data  = &pcf_data_u18,
 622        },
 623        {
 624                I2C_BOARD_INFO("pcf8574", 0x3a),
 625                .platform_data  = &pcf_data_u35,
 626        },
 627        {
 628                I2C_BOARD_INFO("24c256", 0x50),
 629                .platform_data  = &eeprom_info,
 630        },
 631        {
 632                I2C_BOARD_INFO("tlv320aic33", 0x1b),
 633        },
 634};
 635
 636/* The msp430 uses a slow bitbanged I2C implementation (ergo 20 KHz),
 637 * which requires 100 usec of idle bus after i2c writes sent to it.
 638 */
 639static struct davinci_i2c_platform_data i2c_pdata = {
 640        .bus_freq       = 20 /* kHz */,
 641        .bus_delay      = 100 /* usec */,
 642};
 643
 644static void __init evm_init_i2c(void)
 645{
 646        davinci_init_i2c(&i2c_pdata);
 647        i2c_add_driver(&dm6446evm_msp_driver);
 648        i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
 649}
 650
 651static struct platform_device *davinci_evm_devices[] __initdata = {
 652        &davinci_fb_device,
 653        &rtc_dev,
 654};
 655
 656static struct davinci_uart_config uart_config __initdata = {
 657        .enabled_uarts = (1 << 0),
 658};
 659
 660static void __init
 661davinci_evm_map_io(void)
 662{
 663        /* setup input configuration for VPFE input devices */
 664        dm644x_set_vpfe_config(&vpfe_cfg);
 665        dm644x_init();
 666}
 667
 668static int davinci_phy_fixup(struct phy_device *phydev)
 669{
 670        unsigned int control;
 671        /* CRITICAL: Fix for increasing PHY signal drive strength for
 672         * TX lockup issue. On DaVinci EVM, the Intel LXT971 PHY
 673         * signal strength was low causing  TX to fail randomly. The
 674         * fix is to Set bit 11 (Increased MII drive strength) of PHY
 675         * register 26 (Digital Config register) on this phy. */
 676        control = phy_read(phydev, 26);
 677        phy_write(phydev, 26, (control | 0x800));
 678        return 0;
 679}
 680
 681#if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \
 682    defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE)
 683#define HAS_ATA 1
 684#else
 685#define HAS_ATA 0
 686#endif
 687
 688#if defined(CONFIG_MTD_PHYSMAP) || \
 689    defined(CONFIG_MTD_PHYSMAP_MODULE)
 690#define HAS_NOR 1
 691#else
 692#define HAS_NOR 0
 693#endif
 694
 695#if defined(CONFIG_MTD_NAND_DAVINCI) || \
 696    defined(CONFIG_MTD_NAND_DAVINCI_MODULE)
 697#define HAS_NAND 1
 698#else
 699#define HAS_NAND 0
 700#endif
 701
 702static __init void davinci_evm_init(void)
 703{
 704        struct clk *aemif_clk;
 705        struct davinci_soc_info *soc_info = &davinci_soc_info;
 706
 707        aemif_clk = clk_get(NULL, "aemif");
 708        clk_enable(aemif_clk);
 709
 710        if (HAS_ATA) {
 711                if (HAS_NAND || HAS_NOR)
 712                        pr_warning("WARNING: both IDE and Flash are "
 713                                "enabled, but they share AEMIF pins.\n"
 714                                "\tDisable IDE for NAND/NOR support.\n");
 715                davinci_cfg_reg(DM644X_HPIEN_DISABLE);
 716                davinci_cfg_reg(DM644X_ATAEN);
 717                davinci_cfg_reg(DM644X_HDIREN);
 718                platform_device_register(&ide_dev);
 719        } else if (HAS_NAND || HAS_NOR) {
 720                davinci_cfg_reg(DM644X_HPIEN_DISABLE);
 721                davinci_cfg_reg(DM644X_ATAEN_DISABLE);
 722
 723                /* only one device will be jumpered and detected */
 724                if (HAS_NAND) {
 725                        platform_device_register(&davinci_evm_nandflash_device);
 726                        evm_leds[7].default_trigger = "nand-disk";
 727                        if (HAS_NOR)
 728                                pr_warning("WARNING: both NAND and NOR flash "
 729                                        "are enabled; disable one of them.\n");
 730                } else if (HAS_NOR)
 731                        platform_device_register(&davinci_evm_norflash_device);
 732        }
 733
 734        platform_add_devices(davinci_evm_devices,
 735                             ARRAY_SIZE(davinci_evm_devices));
 736        evm_init_i2c();
 737
 738        davinci_setup_mmc(0, &dm6446evm_mmc_config);
 739
 740        davinci_serial_init(&uart_config);
 741        dm644x_init_asp(&dm644x_evm_snd_data);
 742
 743        soc_info->emac_pdata->phy_mask = DM644X_EVM_PHY_MASK;
 744        soc_info->emac_pdata->mdio_max_freq = DM644X_EVM_MDIO_FREQUENCY;
 745
 746        /* Register the fixup for PHY on DaVinci */
 747        phy_register_fixup_for_uid(LXT971_PHY_ID, LXT971_PHY_MASK,
 748                                        davinci_phy_fixup);
 749
 750}
 751
 752static __init void davinci_evm_irq_init(void)
 753{
 754        davinci_irq_init();
 755}
 756
 757MACHINE_START(DAVINCI_EVM, "DaVinci DM644x EVM")
 758        /* Maintainer: MontaVista Software <source@mvista.com> */
 759        .phys_io      = IO_PHYS,
 760        .io_pg_offst  = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
 761        .boot_params  = (DAVINCI_DDR_BASE + 0x100),
 762        .map_io       = davinci_evm_map_io,
 763        .init_irq     = davinci_evm_irq_init,
 764        .timer        = &davinci_timer,
 765        .init_machine = davinci_evm_init,
 766MACHINE_END
 767