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/init.h>
  22 #include <linux/mm.h>
  23 #include <linux/module.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/spi/spi.h>
  26 #include <linux/spi/at73c213.h>
  27 #include <linux/gpio_keys.h>
  28 #include <linux/input.h>
  29 #include <linux/clk.h>
  30 #include <linux/regulator/machine.h>
  31 #include <linux/regulator/fixed.h>
  32 #include <linux/regulator/consumer.h>
  33
  34 #include <mach/hardware.h>
  35 #include <asm/setup.h>
  36 #include <asm/mach-types.h>
  37 #include <asm/irq.h>
  38
  39 #include <asm/mach/arch.h>
  40 #include <asm/mach/map.h>
  41 #include <asm/mach/irq.h>
  42
  43 #include <mach/board.h>
  44 #include <mach/gpio.h>
  45 #include <mach/at91sam9_smc.h>
  46
  47 #include "sam9_smc.h"
  48 #include "generic.h"
  49
  50
  51 static void __init ek_map_io(void)
  52 {
  53         /* Initialize processor: 18.432 MHz crystal */
  54         at91sam9260_initialize(18432000);
  55
  56         /* DBGU on ttyS0. (Rx & Tx only) */
  57         at91_register_uart(0, 0, 0);
  58
  59         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
  60         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
  61                            | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
  62                            | ATMEL_UART_RI);
  63
  64         /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
  65         at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
  66
  67         /* set serial console to ttyS0 (ie, DBGU) */
  68         at91_set_serial_console(0);
  69 }
  70
  71 static void __init ek_init_irq(void)
  72 {
  73         at91sam9260_init_interrupts(NULL);
  74 }
  75
  76
  77 /*
  78  * USB Host port
  79  */
  80 static struct at91_usbh_data __initdata ek_usbh_data = {
  81         .ports          = 2,
  82 };
  83
  84 /*
  85  * USB Device port
  86  */
  87 static struct at91_udc_data __initdata ek_udc_data = {
  88         .vbus_pin       = AT91_PIN_PC5,
  89         .pullup_pin     = 0,            /* pull-up driven by UDC */
  90 };
  91
  92
  93 /*
  94  * SPI devices.
  95  */
  96 static struct spi_board_info ek_spi_devices[] = {
  97 #if !defined(CONFIG_MMC_AT91)
  98         {       /* DataFlash chip */
  99                 .modalias       = "mtd_dataflash",
 100                 .chip_select    = 1,
 101                 .max_speed_hz   = 15 * 1000 * 1000,
 102                 .bus_num        = 0,
 103         },
 104 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 105         {       /* DataFlash card */
 106                 .modalias       = "mtd_dataflash",
 107                 .chip_select    = 0,
 108                 .max_speed_hz   = 15 * 1000 * 1000,
 109                 .bus_num        = 0,
 110         },
 111 #endif
 112 #endif
 113 };
 114
 115
 116 /*
 117  * MACB Ethernet device
 118  */
 119 static struct at91_eth_data __initdata ek_macb_data = {
 120         .phy_irq_pin    = AT91_PIN_PA7,
 121         .is_rmii        = 1,
 122 };
 123
 124
 125 /*
 126  * NAND flash
 127  */
 128 static struct mtd_partition __initdata ek_nand_partition[] = {
 129         {
 130                 .name   = "Bootstrap",
 131                 .offset = 0,
 132                 .size   = 4 * SZ_1M,
 133         },
 134         {
 135                 .name   = "Partition 1",
 136                 .offset = MTDPART_OFS_NXTBLK,
 137                 .size   = 60 * SZ_1M,
 138         },
 139         {
 140                 .name   = "Partition 2",
 141                 .offset = MTDPART_OFS_NXTBLK,
 142                 .size   = MTDPART_SIZ_FULL,
 143         },
 144 };
 145
 146 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 147 {
 148         *num_partitions = ARRAY_SIZE(ek_nand_partition);
 149         return ek_nand_partition;
 150 }
 151
 152 /* det_pin is not connected */
 153 static struct atmel_nand_data __initdata ek_nand_data = {
 154         .ale            = 21,
 155         .cle            = 22,
 156         .rdy_pin        = AT91_PIN_PC13,
 157         .enable_pin     = AT91_PIN_PC14,
 158         .partition_info = nand_partitions,
 159 #if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
 160         .bus_width_16   = 1,
 161 #else
 162         .bus_width_16   = 0,
 163 #endif
 164 };
 165
 166 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 167         .ncs_read_setup         = 0,
 168         .nrd_setup              = 2,
 169         .ncs_write_setup        = 0,
 170         .nwe_setup              = 2,
 171
 172         .ncs_read_pulse         = 4,
 173         .nrd_pulse              = 4,
 174         .ncs_write_pulse        = 4,
 175         .nwe_pulse              = 4,
 176
 177         .read_cycle             = 7,
 178         .write_cycle            = 7,
 179
 180         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 181         .tdf_cycles             = 3,
 182 };
 183
 184 static void __init ek_add_device_nand(void)
 185 {
 186         /* setup bus-width (8 or 16) */
 187         if (ek_nand_data.bus_width_16)
 188                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 189         else
 190                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 191
 192         /* configure chip-select 3 (NAND) */
 193         sam9_smc_configure(3, &ek_nand_smc_config);
 194
 195         at91_add_device_nand(&ek_nand_data);
 196 }
 197
 198
 199 /*
 200  * MCI (SD/MMC)
 201  * det_pin, wp_pin and vcc_pin are not connected
 202  */
 203 static struct at91_mmc_data __initdata ek_mmc_data = {
 204         .slot_b         = 1,
 205         .wire4          = 1,
 206 };
 207
 208
 209 /*
 210  * LEDs
 211  */
 212 static struct gpio_led ek_leds[] = {
 213         {       /* "bottom" led, green, userled1 to be defined */
 214                 .name                   = "ds5",
 215                 .gpio                   = AT91_PIN_PA6,
 216                 .active_low             = 1,
 217                 .default_trigger        = "none",
 218         },
 219         {       /* "power" led, yellow */
 220                 .name                   = "ds1",
 221                 .gpio                   = AT91_PIN_PA9,
 222                 .default_trigger        = "heartbeat",
 223         }
 224 };
 225
 226
 227 /*
 228  * GPIO Buttons
 229  */
 230 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 231 static struct gpio_keys_button ek_buttons[] = {
 232         {
 233                 .gpio           = AT91_PIN_PA30,
 234                 .code           = BTN_3,
 235                 .desc           = "Button 3",
 236                 .active_low     = 1,
 237                 .wakeup         = 1,
 238         },
 239         {
 240                 .gpio           = AT91_PIN_PA31,
 241                 .code           = BTN_4,
 242                 .desc           = "Button 4",
 243                 .active_low     = 1,
 244                 .wakeup         = 1,
 245         }
 246 };
 247
 248 static struct gpio_keys_platform_data ek_button_data = {
 249         .buttons        = ek_buttons,
 250         .nbuttons       = ARRAY_SIZE(ek_buttons),
 251 };
 252
 253 static struct platform_device ek_button_device = {
 254         .name           = "gpio-keys",
 255         .id             = -1,
 256         .num_resources  = 0,
 257         .dev            = {
 258                 .platform_data  = &ek_button_data,
 259         }
 260 };
 261
 262 static void __init ek_add_device_buttons(void)
 263 {
 264         at91_set_gpio_input(AT91_PIN_PA30, 1);  /* btn3 */
 265         at91_set_deglitch(AT91_PIN_PA30, 1);
 266         at91_set_gpio_input(AT91_PIN_PA31, 1);  /* btn4 */
 267         at91_set_deglitch(AT91_PIN_PA31, 1);
 268
 269         platform_device_register(&ek_button_device);
 270 }
 271 #else
 272 static void __init ek_add_device_buttons(void) {}
 273 #endif
 274
 275 #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
 276 static struct regulator_consumer_supply ek_audio_consumer_supplies[] = {
 277         REGULATOR_SUPPLY("AVDD", "0-001b"),
 278         REGULATOR_SUPPLY("HPVDD", "0-001b"),
 279         REGULATOR_SUPPLY("DBVDD", "0-001b"),
 280         REGULATOR_SUPPLY("DCVDD", "0-001b"),
 281 };
 282
 283 static struct regulator_init_data ek_avdd_reg_init_data = {
 284         .constraints    = {
 285                 .name   = "3V3",
 286                 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 287         },
 288         .consumer_supplies = ek_audio_consumer_supplies,
 289         .num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies),
 290 };
 291
 292 static struct fixed_voltage_config ek_vdd_pdata = {
 293         .supply_name    = "board-3V3",
 294         .microvolts     = 3300000,
 295         .gpio           = -EINVAL,
 296         .enabled_at_boot = 0,
 297         .init_data      = &ek_avdd_reg_init_data,
 298 };
 299 static struct platform_device ek_voltage_regulator = {
 300         .name           = "reg-fixed-voltage",
 301         .id             = -1,
 302         .num_resources  = 0,
 303         .dev            = {
 304                 .platform_data  = &ek_vdd_pdata,
 305         },
 306 };
 307 static void __init ek_add_regulators(void)
 308 {
 309         platform_device_register(&ek_voltage_regulator);
 310 }
 311 #else
 312 static void __init ek_add_regulators(void) {}
 313 #endif
 314
 315
 316 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 317         {
 318                 I2C_BOARD_INFO("24c512", 0x50)
 319         },
 320         {
 321                 I2C_BOARD_INFO("wm8731", 0x1b)
 322         },
 323 };
 324
 325
 326 static void __init ek_board_init(void)
 327 {
 328         /* Serial */
 329         at91_add_device_serial();
 330         /* USB Host */
 331         at91_add_device_usbh(&ek_usbh_data);
 332         /* USB Device */
 333         at91_add_device_udc(&ek_udc_data);
 334         /* SPI */
 335         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 336         /* NAND */
 337         ek_add_device_nand();
 338         /* Ethernet */
 339         at91_add_device_eth(&ek_macb_data);
 340         /* Regulators */
 341         ek_add_regulators();
 342         /* MMC */
 343         at91_add_device_mmc(0, &ek_mmc_data);
 344         /* I2C */
 345         at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 346         /* LEDs */
 347         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 348         /* Push Buttons */
 349         ek_add_device_buttons();
 350         /* PCK0 provides MCLK to the WM8731 */
 351         at91_set_B_periph(AT91_PIN_PC1, 0);
 352         /* SSC (for WM8731) */
 353         at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
 354 }
 355
 356 MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK")
 357         /* Maintainer: Atmel */
 358         .phys_io        = AT91_BASE_SYS,
 359         .io_pg_offst    = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
 360         .boot_params    = AT91_SDRAM_BASE + 0x100,
 361         .timer          = &at91sam926x_timer,
 362         .map_io         = ek_map_io,
 363         .init_irq       = ek_init_irq,
 364         .init_machine   = ek_board_init,
 365 MACHINE_END