arch/arm/mach-at91/board-sam9260ek.c

   1 /*
   2  * linux/arch/arm/mach-at91/board-sam9260ek.c
   3  *
   4  *  Copyright (C) 2005 SAN People
   5  *  Copyright (C) 2006 Atmel
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include <linux/types.h>
  23 #include <linux/init.h>
  24 #include <linux/mm.h>
  25 #include <linux/module.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/spi/spi.h>
  28 #include <linux/spi/at73c213.h>
  29 #include <linux/clk.h>
  30 #include <linux/i2c/at24.h>
  31 #include <linux/gpio_keys.h>
  32 #include <linux/input.h>
  33
  34 #include <asm/setup.h>
  35 #include <asm/mach-types.h>
  36 #include <asm/irq.h>
  37
  38 #include <asm/mach/arch.h>
  39 #include <asm/mach/map.h>
  40 #include <asm/mach/irq.h>
  41
  42 #include <mach/hardware.h>
  43 #include <mach/board.h>
  44 #include <mach/gpio.h>
  45 #include <mach/at91sam9_smc.h>
  46 #include <mach/at91_shdwc.h>
  47
  48 #include "sam9_smc.h"
  49 #include "generic.h"
  50
  51
  52 static void __init ek_map_io(void)
  53 {
  54         /* Initialize processor: 18.432 MHz crystal */
  55         at91sam9260_initialize(18432000);
  56
  57         /* DBGU on ttyS0. (Rx & Tx only) */
  58         at91_register_uart(0, 0, 0);
  59
  60         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
  61         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
  62                            | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
  63                            | ATMEL_UART_RI);
  64
  65         /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
  66         at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
  67
  68         /* set serial console to ttyS0 (ie, DBGU) */
  69         at91_set_serial_console(0);
  70 }
  71
  72 static void __init ek_init_irq(void)
  73 {
  74         at91sam9260_init_interrupts(NULL);
  75 }
  76
  77
  78 /*
  79  * USB Host port
  80  */
  81 static struct at91_usbh_data __initdata ek_usbh_data = {
  82         .ports          = 2,
  83 };
  84
  85 /*
  86  * USB Device port
  87  */
  88 static struct at91_udc_data __initdata ek_udc_data = {
  89         .vbus_pin       = AT91_PIN_PC5,
  90         .pullup_pin     = 0,            /* pull-up driven by UDC */
  91 };
  92
  93
  94 /*
  95  * Audio
  96  */
  97 static struct at73c213_board_info at73c213_data = {
  98         .ssc_id         = 0,
  99         .shortname      = "AT91SAM9260-EK external DAC",
 100 };
 101
 102 #if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
 103 static void __init at73c213_set_clk(struct at73c213_board_info *info)
 104 {
 105         struct clk *pck0;
 106         struct clk *plla;
 107
 108         pck0 = clk_get(NULL, "pck0");
 109         plla = clk_get(NULL, "plla");
 110
 111         /* AT73C213 MCK Clock */
 112         at91_set_B_periph(AT91_PIN_PC1, 0);     /* PCK0 */
 113
 114         clk_set_parent(pck0, plla);
 115         clk_put(plla);
 116
 117         info->dac_clk = pck0;
 118 }
 119 #else
 120 static void __init at73c213_set_clk(struct at73c213_board_info *info) {}
 121 #endif
 122
 123 /*
 124  * SPI devices.
 125  */
 126 static struct spi_board_info ek_spi_devices[] = {
 127 #if !defined(CONFIG_MMC_AT91)
 128         {       /* DataFlash chip */
 129                 .modalias       = "mtd_dataflash",
 130                 .chip_select    = 1,
 131                 .max_speed_hz   = 15 * 1000 * 1000,
 132                 .bus_num        = 0,
 133         },
 134 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 135         {       /* DataFlash card */
 136                 .modalias       = "mtd_dataflash",
 137                 .chip_select    = 0,
 138                 .max_speed_hz   = 15 * 1000 * 1000,
 139                 .bus_num        = 0,
 140         },
 141 #endif
 142 #endif
 143 #if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
 144         {       /* AT73C213 DAC */
 145                 .modalias       = "at73c213",
 146                 .chip_select    = 0,
 147                 .max_speed_hz   = 10 * 1000 * 1000,
 148                 .bus_num        = 1,
 149                 .mode           = SPI_MODE_1,
 150                 .platform_data  = &at73c213_data,
 151         },
 152 #endif
 153 };
 154
 155
 156 /*
 157  * MACB Ethernet device
 158  */
 159 static struct at91_eth_data __initdata ek_macb_data = {
 160         .phy_irq_pin    = AT91_PIN_PA7,
 161         .is_rmii        = 1,
 162 };
 163
 164
 165 /*
 166  * NAND flash
 167  */
 168 static struct mtd_partition __initdata ek_nand_partition[] = {
 169         {
 170                 .name   = "Partition 1",
 171                 .offset = 0,
 172                 .size   = SZ_256K,
 173         },
 174         {
 175                 .name   = "Partition 2",
 176                 .offset = MTDPART_OFS_NXTBLK,
 177                 .size   = MTDPART_SIZ_FULL,
 178         },
 179 };
 180
 181 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 182 {
 183         *num_partitions = ARRAY_SIZE(ek_nand_partition);
 184         return ek_nand_partition;
 185 }
 186
 187 static struct atmel_nand_data __initdata ek_nand_data = {
 188         .ale            = 21,
 189         .cle            = 22,
 190 //      .det_pin        = ... not connected
 191         .rdy_pin        = AT91_PIN_PC13,
 192         .enable_pin     = AT91_PIN_PC14,
 193         .partition_info = nand_partitions,
 194 #if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
 195         .bus_width_16   = 1,
 196 #else
 197         .bus_width_16   = 0,
 198 #endif
 199 };
 200
 201 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 202         .ncs_read_setup         = 0,
 203         .nrd_setup              = 1,
 204         .ncs_write_setup        = 0,
 205         .nwe_setup              = 1,
 206
 207         .ncs_read_pulse         = 3,
 208         .nrd_pulse              = 3,
 209         .ncs_write_pulse        = 3,
 210         .nwe_pulse              = 3,
 211
 212         .read_cycle             = 5,
 213         .write_cycle            = 5,
 214
 215         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 216         .tdf_cycles             = 2,
 217 };
 218
 219 static void __init ek_add_device_nand(void)
 220 {
 221         /* setup bus-width (8 or 16) */
 222         if (ek_nand_data.bus_width_16)
 223                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 224         else
 225                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 226
 227         /* configure chip-select 3 (NAND) */
 228         sam9_smc_configure(3, &ek_nand_smc_config);
 229
 230         at91_add_device_nand(&ek_nand_data);
 231 }
 232
 233
 234 /*
 235  * MCI (SD/MMC)
 236  */
 237 static struct at91_mmc_data __initdata ek_mmc_data = {
 238         .slot_b         = 1,
 239         .wire4          = 1,
 240 //      .det_pin        = ... not connected
 241 //      .wp_pin         = ... not connected
 242 //      .vcc_pin        = ... not connected
 243 };
 244
 245
 246 /*
 247  * LEDs
 248  */
 249 static struct gpio_led ek_leds[] = {
 250         {       /* "bottom" led, green, userled1 to be defined */
 251                 .name                   = "ds5",
 252                 .gpio                   = AT91_PIN_PA6,
 253                 .active_low             = 1,
 254                 .default_trigger        = "none",
 255         },
 256         {       /* "power" led, yellow */
 257                 .name                   = "ds1",
 258                 .gpio                   = AT91_PIN_PA9,
 259                 .default_trigger        = "heartbeat",
 260         }
 261 };
 262
 263 /*
 264  * I2C devices
 265  */
 266 static struct at24_platform_data at24c512 = {
 267         .byte_len       = SZ_512K / 8,
 268         .page_size      = 128,
 269         .flags          = AT24_FLAG_ADDR16,
 270 };
 271
 272 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 273         {
 274                 I2C_BOARD_INFO("24c512", 0x50),
 275                 .platform_data = &at24c512,
 276         },
 277         /* more devices can be added using expansion connectors */
 278 };
 279
 280
 281 /*
 282  * GPIO Buttons
 283  */
 284 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 285 static struct gpio_keys_button ek_buttons[] = {
 286         {
 287                 .gpio           = AT91_PIN_PA30,
 288                 .code           = BTN_3,
 289                 .desc           = "Button 3",
 290                 .active_low     = 1,
 291                 .wakeup         = 1,
 292         },
 293         {
 294                 .gpio           = AT91_PIN_PA31,
 295                 .code           = BTN_4,
 296                 .desc           = "Button 4",
 297                 .active_low     = 1,
 298                 .wakeup         = 1,
 299         }
 300 };
 301
 302 static struct gpio_keys_platform_data ek_button_data = {
 303         .buttons        = ek_buttons,
 304         .nbuttons       = ARRAY_SIZE(ek_buttons),
 305 };
 306
 307 static struct platform_device ek_button_device = {
 308         .name           = "gpio-keys",
 309         .id             = -1,
 310         .num_resources  = 0,
 311         .dev            = {
 312                 .platform_data  = &ek_button_data,
 313         }
 314 };
 315
 316 static void __init ek_add_device_buttons(void)
 317 {
 318         at91_set_gpio_input(AT91_PIN_PA30, 1);  /* btn3 */
 319         at91_set_deglitch(AT91_PIN_PA30, 1);
 320         at91_set_gpio_input(AT91_PIN_PA31, 1);  /* btn4 */
 321         at91_set_deglitch(AT91_PIN_PA31, 1);
 322
 323         platform_device_register(&ek_button_device);
 324 }
 325 #else
 326 static void __init ek_add_device_buttons(void) {}
 327 #endif
 328
 329
 330 static void __init ek_board_init(void)
 331 {
 332         /* Serial */
 333         at91_add_device_serial();
 334         /* USB Host */
 335         at91_add_device_usbh(&ek_usbh_data);
 336         /* USB Device */
 337         at91_add_device_udc(&ek_udc_data);
 338         /* SPI */
 339         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 340         /* NAND */
 341         ek_add_device_nand();
 342         /* Ethernet */
 343         at91_add_device_eth(&ek_macb_data);
 344         /* MMC */
 345         at91_add_device_mmc(0, &ek_mmc_data);
 346         /* I2C */
 347         at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 348         /* SSC (to AT73C213) */
 349         at73c213_set_clk(&at73c213_data);
 350         at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
 351         /* LEDs */
 352         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 353         /* Push Buttons */
 354         ek_add_device_buttons();
 355 }
 356
 357 MACHINE_START(AT91SAM9260EK, "Atmel AT91SAM9260-EK")
 358         /* Maintainer: Atmel */
 359         .boot_params    = AT91_SDRAM_BASE + 0x100,
 360         .timer          = &at91sam926x_timer,
 361         .map_io         = ek_map_io,
 362         .init_irq       = ek_init_irq,
 363         .init_machine   = ek_board_init,
 364 MACHINE_END