arch/arm/mach-at91/board-sam9g20ek.c

   1 /*
   2  *  Copyright (C) 2005 SAN People
   3  *  Copyright (C) 2008 Atmel
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19
  20 #include <linux/types.h>
  21 #include <linux/gpio.h>
  22 #include <linux/init.h>
  23 #include <linux/mm.h>
  24 #include <linux/module.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/spi/spi.h>
  27 #include <linux/spi/at73c213.h>
  28 #include <linux/gpio_keys.h>
  29 #include <linux/input.h>
  30 #include <linux/clk.h>
  31 #include <linux/regulator/machine.h>
  32 #include <linux/regulator/fixed.h>
  33 #include <linux/regulator/consumer.h>
  34
  35 #include <mach/hardware.h>
  36 #include <asm/setup.h>
  37 #include <asm/mach-types.h>
  38 #include <asm/irq.h>
  39
  40 #include <asm/mach/arch.h>
  41 #include <asm/mach/map.h>
  42 #include <asm/mach/irq.h>
  43
  44 #include <mach/board.h>
  45 #include <mach/at91sam9_smc.h>
  46 #include <mach/system_rev.h>
  47
  48 #include "sam9_smc.h"
  49 #include "generic.h"
  50
  51 /*
  52  * board revision encoding
  53  * bit 0:
  54  *      0 => 1 sd/mmc slot
  55  *      1 => 2 sd/mmc slots connectors (board from revision C)
  56  */
  57 #define HAVE_2MMC       (1 << 0)
  58 static int inline ek_have_2mmc(void)
  59 {
  60         return machine_is_at91sam9g20ek_2mmc() || (system_rev & HAVE_2MMC);
  61 }
  62
  63
  64 static void __init ek_init_early(void)
  65 {
  66         /* Initialize processor: 18.432 MHz crystal */
  67         at91_initialize(18432000);
  68
  69         /* DBGU on ttyS0. (Rx & Tx only) */
  70         at91_register_uart(0, 0, 0);
  71
  72         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
  73         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
  74                            | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
  75                            | ATMEL_UART_RI);
  76
  77         /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
  78         at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
  79
  80         /* set serial console to ttyS0 (ie, DBGU) */
  81         at91_set_serial_console(0);
  82 }
  83
  84 /*
  85  * USB Host port
  86  */
  87 static struct at91_usbh_data __initdata ek_usbh_data = {
  88         .ports          = 2,
  89 };
  90
  91 /*
  92  * USB Device port
  93  */
  94 static struct at91_udc_data __initdata ek_udc_data = {
  95         .vbus_pin       = AT91_PIN_PC5,
  96         .pullup_pin     = 0,            /* pull-up driven by UDC */
  97 };
  98
  99
 100 /*
 101  * SPI devices.
 102  */
 103 static struct spi_board_info ek_spi_devices[] = {
 104 #if !(defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_AT91))
 105         {       /* DataFlash chip */
 106                 .modalias       = "mtd_dataflash",
 107                 .chip_select    = 1,
 108                 .max_speed_hz   = 15 * 1000 * 1000,
 109                 .bus_num        = 0,
 110         },
 111 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 112         {       /* DataFlash card */
 113                 .modalias       = "mtd_dataflash",
 114                 .chip_select    = 0,
 115                 .max_speed_hz   = 15 * 1000 * 1000,
 116                 .bus_num        = 0,
 117         },
 118 #endif
 119 #endif
 120 };
 121
 122
 123 /*
 124  * MACB Ethernet device
 125  */
 126 static struct at91_eth_data __initdata ek_macb_data = {
 127         .phy_irq_pin    = AT91_PIN_PA7,
 128         .is_rmii        = 1,
 129 };
 130
 131 static void __init ek_add_device_macb(void)
 132 {
 133         if (ek_have_2mmc())
 134                 ek_macb_data.phy_irq_pin = AT91_PIN_PB0;
 135
 136         at91_add_device_eth(&ek_macb_data);
 137 }
 138
 139 /*
 140  * NAND flash
 141  */
 142 static struct mtd_partition __initdata ek_nand_partition[] = {
 143         {
 144                 .name   = "Bootstrap",
 145                 .offset = 0,
 146                 .size   = 4 * SZ_1M,
 147         },
 148         {
 149                 .name   = "Partition 1",
 150                 .offset = MTDPART_OFS_NXTBLK,
 151                 .size   = 60 * SZ_1M,
 152         },
 153         {
 154                 .name   = "Partition 2",
 155                 .offset = MTDPART_OFS_NXTBLK,
 156                 .size   = MTDPART_SIZ_FULL,
 157         },
 158 };
 159
 160 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 161 {
 162         *num_partitions = ARRAY_SIZE(ek_nand_partition);
 163         return ek_nand_partition;
 164 }
 165
 166 /* det_pin is not connected */
 167 static struct atmel_nand_data __initdata ek_nand_data = {
 168         .ale            = 21,
 169         .cle            = 22,
 170         .rdy_pin        = AT91_PIN_PC13,
 171         .enable_pin     = AT91_PIN_PC14,
 172         .partition_info = nand_partitions,
 173 };
 174
 175 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 176         .ncs_read_setup         = 0,
 177         .nrd_setup              = 2,
 178         .ncs_write_setup        = 0,
 179         .nwe_setup              = 2,
 180
 181         .ncs_read_pulse         = 4,
 182         .nrd_pulse              = 4,
 183         .ncs_write_pulse        = 4,
 184         .nwe_pulse              = 4,
 185
 186         .read_cycle             = 7,
 187         .write_cycle            = 7,
 188
 189         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 190         .tdf_cycles             = 3,
 191 };
 192
 193 static void __init ek_add_device_nand(void)
 194 {
 195         ek_nand_data.bus_width_16 = board_have_nand_16bit();
 196         /* setup bus-width (8 or 16) */
 197         if (ek_nand_data.bus_width_16)
 198                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 199         else
 200                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 201
 202         /* configure chip-select 3 (NAND) */
 203         sam9_smc_configure(3, &ek_nand_smc_config);
 204
 205         at91_add_device_nand(&ek_nand_data);
 206 }
 207
 208
 209 /*
 210  * MCI (SD/MMC)
 211  * wp_pin and vcc_pin are not connected
 212  */
 213 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 214 static struct mci_platform_data __initdata ek_mmc_data = {
 215         .slot[1] = {
 216                 .bus_width      = 4,
 217                 .detect_pin     = AT91_PIN_PC9,
 218         },
 219
 220 };
 221 #else
 222 static struct at91_mmc_data __initdata ek_mmc_data = {
 223         .slot_b         = 1,    /* Only one slot so use slot B */
 224         .wire4          = 1,
 225         .det_pin        = AT91_PIN_PC9,
 226 };
 227 #endif
 228
 229 static void __init ek_add_device_mmc(void)
 230 {
 231 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 232         if (ek_have_2mmc()) {
 233                 ek_mmc_data.slot[0].bus_width = 4;
 234                 ek_mmc_data.slot[0].detect_pin = AT91_PIN_PC2;
 235         }
 236         at91_add_device_mci(0, &ek_mmc_data);
 237 #else
 238         at91_add_device_mmc(0, &ek_mmc_data);
 239 #endif
 240 }
 241
 242 /*
 243  * LEDs
 244  */
 245 static struct gpio_led ek_leds[] = {
 246         {       /* "bottom" led, green, userled1 to be defined */
 247                 .name                   = "ds5",
 248                 .gpio                   = AT91_PIN_PA6,
 249                 .active_low             = 1,
 250                 .default_trigger        = "none",
 251         },
 252         {       /* "power" led, yellow */
 253                 .name                   = "ds1",
 254                 .gpio                   = AT91_PIN_PA9,
 255                 .default_trigger        = "heartbeat",
 256         }
 257 };
 258
 259 static void __init ek_add_device_gpio_leds(void)
 260 {
 261         if (ek_have_2mmc()) {
 262                 ek_leds[0].gpio = AT91_PIN_PB8;
 263                 ek_leds[1].gpio = AT91_PIN_PB9;
 264         }
 265
 266         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 267 }
 268
 269 /*
 270  * GPIO Buttons
 271  */
 272 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 273 static struct gpio_keys_button ek_buttons[] = {
 274         {
 275                 .gpio           = AT91_PIN_PA30,
 276                 .code           = BTN_3,
 277                 .desc           = "Button 3",
 278                 .active_low     = 1,
 279                 .wakeup         = 1,
 280         },
 281         {
 282                 .gpio           = AT91_PIN_PA31,
 283                 .code           = BTN_4,
 284                 .desc           = "Button 4",
 285                 .active_low     = 1,
 286                 .wakeup         = 1,
 287         }
 288 };
 289
 290 static struct gpio_keys_platform_data ek_button_data = {
 291         .buttons        = ek_buttons,
 292         .nbuttons       = ARRAY_SIZE(ek_buttons),
 293 };
 294
 295 static struct platform_device ek_button_device = {
 296         .name           = "gpio-keys",
 297         .id             = -1,
 298         .num_resources  = 0,
 299         .dev            = {
 300                 .platform_data  = &ek_button_data,
 301         }
 302 };
 303
 304 static void __init ek_add_device_buttons(void)
 305 {
 306         at91_set_gpio_input(AT91_PIN_PA30, 1);  /* btn3 */
 307         at91_set_deglitch(AT91_PIN_PA30, 1);
 308         at91_set_gpio_input(AT91_PIN_PA31, 1);  /* btn4 */
 309         at91_set_deglitch(AT91_PIN_PA31, 1);
 310
 311         platform_device_register(&ek_button_device);
 312 }
 313 #else
 314 static void __init ek_add_device_buttons(void) {}
 315 #endif
 316
 317 #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
 318 static struct regulator_consumer_supply ek_audio_consumer_supplies[] = {
 319         REGULATOR_SUPPLY("AVDD", "0-001b"),
 320         REGULATOR_SUPPLY("HPVDD", "0-001b"),
 321         REGULATOR_SUPPLY("DBVDD", "0-001b"),
 322         REGULATOR_SUPPLY("DCVDD", "0-001b"),
 323 };
 324
 325 static struct regulator_init_data ek_avdd_reg_init_data = {
 326         .constraints    = {
 327                 .name   = "3V3",
 328                 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 329         },
 330         .consumer_supplies = ek_audio_consumer_supplies,
 331         .num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies),
 332 };
 333
 334 static struct fixed_voltage_config ek_vdd_pdata = {
 335         .supply_name    = "board-3V3",
 336         .microvolts     = 3300000,
 337         .gpio           = -EINVAL,
 338         .enabled_at_boot = 0,
 339         .init_data      = &ek_avdd_reg_init_data,
 340 };
 341 static struct platform_device ek_voltage_regulator = {
 342         .name           = "reg-fixed-voltage",
 343         .id             = -1,
 344         .num_resources  = 0,
 345         .dev            = {
 346                 .platform_data  = &ek_vdd_pdata,
 347         },
 348 };
 349 static void __init ek_add_regulators(void)
 350 {
 351         platform_device_register(&ek_voltage_regulator);
 352 }
 353 #else
 354 static void __init ek_add_regulators(void) {}
 355 #endif
 356
 357
 358 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 359         {
 360                 I2C_BOARD_INFO("24c512", 0x50)
 361         },
 362         {
 363                 I2C_BOARD_INFO("wm8731", 0x1b)
 364         },
 365 };
 366
 367
 368 static void __init ek_board_init(void)
 369 {
 370         /* Serial */
 371         at91_add_device_serial();
 372         /* USB Host */
 373         at91_add_device_usbh(&ek_usbh_data);
 374         /* USB Device */
 375         at91_add_device_udc(&ek_udc_data);
 376         /* SPI */
 377         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 378         /* NAND */
 379         ek_add_device_nand();
 380         /* Ethernet */
 381         ek_add_device_macb();
 382         /* Regulators */
 383         ek_add_regulators();
 384         /* MMC */
 385         ek_add_device_mmc();
 386         /* I2C */
 387         at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 388         /* LEDs */
 389         ek_add_device_gpio_leds();
 390         /* Push Buttons */
 391         ek_add_device_buttons();
 392         /* PCK0 provides MCLK to the WM8731 */
 393         at91_set_B_periph(AT91_PIN_PC1, 0);
 394         /* SSC (for WM8731) */
 395         at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
 396 }
 397
 398 MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK")
 399         /* Maintainer: Atmel */
 400         .timer          = &at91sam926x_timer,
 401         .map_io         = at91_map_io,
 402         .init_early     = ek_init_early,
 403         .init_irq       = at91_init_irq_default,
 404         .init_machine   = ek_board_init,
 405 MACHINE_END
 406
 407 MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
 408         /* Maintainer: Atmel */
 409         .timer          = &at91sam926x_timer,
 410         .map_io         = at91_map_io,
 411         .init_early     = ek_init_early,
 412         .init_irq       = at91_init_irq_default,
 413         .init_machine   = ek_board_init,
 414 MACHINE_END