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 #include <mach/system_rev.h>
  48
  49 #include "sam9_smc.h"
  50 #include "generic.h"
  51
  52
  53 static void __init ek_init_early(void)
  54 {
  55         /* Initialize processor: 18.432 MHz crystal */
  56         at91sam9260_initialize(18432000);
  57
  58         /* DBGU on ttyS0. (Rx & Tx only) */
  59         at91_register_uart(0, 0, 0);
  60
  61         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
  62         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
  63                            | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
  64                            | ATMEL_UART_RI);
  65
  66         /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
  67         at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
  68
  69         /* set serial console to ttyS0 (ie, DBGU) */
  70         at91_set_serial_console(0);
  71 }
  72
  73 static void __init ek_init_irq(void)
  74 {
  75         at91sam9260_init_interrupts(NULL);
  76 }
  77
  78
  79 /*
  80  * USB Host port
  81  */
  82 static struct at91_usbh_data __initdata ek_usbh_data = {
  83         .ports          = 2,
  84 };
  85
  86 /*
  87  * USB Device port
  88  */
  89 static struct at91_udc_data __initdata ek_udc_data = {
  90         .vbus_pin       = AT91_PIN_PC5,
  91         .pullup_pin     = 0,            /* pull-up driven by UDC */
  92 };
  93
  94
  95 /*
  96  * Audio
  97  */
  98 static struct at73c213_board_info at73c213_data = {
  99         .ssc_id         = 0,
 100         .shortname      = "AT91SAM9260-EK external DAC",
 101 };
 102
 103 #if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
 104 static void __init at73c213_set_clk(struct at73c213_board_info *info)
 105 {
 106         struct clk *pck0;
 107         struct clk *plla;
 108
 109         pck0 = clk_get(NULL, "pck0");
 110         plla = clk_get(NULL, "plla");
 111
 112         /* AT73C213 MCK Clock */
 113         at91_set_B_periph(AT91_PIN_PC1, 0);     /* PCK0 */
 114
 115         clk_set_parent(pck0, plla);
 116         clk_put(plla);
 117
 118         info->dac_clk = pck0;
 119 }
 120 #else
 121 static void __init at73c213_set_clk(struct at73c213_board_info *info) {}
 122 #endif
 123
 124 /*
 125  * SPI devices.
 126  */
 127 static struct spi_board_info ek_spi_devices[] = {
 128 #if !defined(CONFIG_MMC_AT91)
 129         {       /* DataFlash chip */
 130                 .modalias       = "mtd_dataflash",
 131                 .chip_select    = 1,
 132                 .max_speed_hz   = 15 * 1000 * 1000,
 133                 .bus_num        = 0,
 134         },
 135 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 136         {       /* DataFlash card */
 137                 .modalias       = "mtd_dataflash",
 138                 .chip_select    = 0,
 139                 .max_speed_hz   = 15 * 1000 * 1000,
 140                 .bus_num        = 0,
 141         },
 142 #endif
 143 #endif
 144 #if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
 145         {       /* AT73C213 DAC */
 146                 .modalias       = "at73c213",
 147                 .chip_select    = 0,
 148                 .max_speed_hz   = 10 * 1000 * 1000,
 149                 .bus_num        = 1,
 150                 .mode           = SPI_MODE_1,
 151                 .platform_data  = &at73c213_data,
 152         },
 153 #endif
 154 };
 155
 156
 157 /*
 158  * MACB Ethernet device
 159  */
 160 static struct at91_eth_data __initdata ek_macb_data = {
 161         .phy_irq_pin    = AT91_PIN_PA7,
 162         .is_rmii        = 1,
 163 };
 164
 165
 166 /*
 167  * NAND flash
 168  */
 169 static struct mtd_partition __initdata ek_nand_partition[] = {
 170         {
 171                 .name   = "Partition 1",
 172                 .offset = 0,
 173                 .size   = SZ_256K,
 174         },
 175         {
 176                 .name   = "Partition 2",
 177                 .offset = MTDPART_OFS_NXTBLK,
 178                 .size   = MTDPART_SIZ_FULL,
 179         },
 180 };
 181
 182 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 183 {
 184         *num_partitions = ARRAY_SIZE(ek_nand_partition);
 185         return ek_nand_partition;
 186 }
 187
 188 static struct atmel_nand_data __initdata ek_nand_data = {
 189         .ale            = 21,
 190         .cle            = 22,
 191 //      .det_pin        = ... not connected
 192         .rdy_pin        = AT91_PIN_PC13,
 193         .enable_pin     = AT91_PIN_PC14,
 194         .partition_info = nand_partitions,
 195 };
 196
 197 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 198         .ncs_read_setup         = 0,
 199         .nrd_setup              = 1,
 200         .ncs_write_setup        = 0,
 201         .nwe_setup              = 1,
 202
 203         .ncs_read_pulse         = 3,
 204         .nrd_pulse              = 3,
 205         .ncs_write_pulse        = 3,
 206         .nwe_pulse              = 3,
 207
 208         .read_cycle             = 5,
 209         .write_cycle            = 5,
 210
 211         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 212         .tdf_cycles             = 2,
 213 };
 214
 215 static void __init ek_add_device_nand(void)
 216 {
 217         ek_nand_data.bus_width_16 = board_have_nand_16bit();
 218         /* setup bus-width (8 or 16) */
 219         if (ek_nand_data.bus_width_16)
 220                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 221         else
 222                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 223
 224         /* configure chip-select 3 (NAND) */
 225         sam9_smc_configure(3, &ek_nand_smc_config);
 226
 227         at91_add_device_nand(&ek_nand_data);
 228 }
 229
 230
 231 /*
 232  * MCI (SD/MMC)
 233  */
 234 static struct at91_mmc_data __initdata ek_mmc_data = {
 235         .slot_b         = 1,
 236         .wire4          = 1,
 237 //      .det_pin        = ... not connected
 238 //      .wp_pin         = ... not connected
 239 //      .vcc_pin        = ... not connected
 240 };
 241
 242
 243 /*
 244  * LEDs
 245  */
 246 static struct gpio_led ek_leds[] = {
 247         {       /* "bottom" led, green, userled1 to be defined */
 248                 .name                   = "ds5",
 249                 .gpio                   = AT91_PIN_PA6,
 250                 .active_low             = 1,
 251                 .default_trigger        = "none",
 252         },
 253         {       /* "power" led, yellow */
 254                 .name                   = "ds1",
 255                 .gpio                   = AT91_PIN_PA9,
 256                 .default_trigger        = "heartbeat",
 257         }
 258 };
 259
 260 /*
 261  * I2C devices
 262  */
 263 static struct at24_platform_data at24c512 = {
 264         .byte_len       = SZ_512K / 8,
 265         .page_size      = 128,
 266         .flags          = AT24_FLAG_ADDR16,
 267 };
 268
 269 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 270         {
 271                 I2C_BOARD_INFO("24c512", 0x50),
 272                 .platform_data = &at24c512,
 273         },
 274         /* more devices can be added using expansion connectors */
 275 };
 276
 277
 278 /*
 279  * GPIO Buttons
 280  */
 281 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 282 static struct gpio_keys_button ek_buttons[] = {
 283         {
 284                 .gpio           = AT91_PIN_PA30,
 285                 .code           = BTN_3,
 286                 .desc           = "Button 3",
 287                 .active_low     = 1,
 288                 .wakeup         = 1,
 289         },
 290         {
 291                 .gpio           = AT91_PIN_PA31,
 292                 .code           = BTN_4,
 293                 .desc           = "Button 4",
 294                 .active_low     = 1,
 295                 .wakeup         = 1,
 296         }
 297 };
 298
 299 static struct gpio_keys_platform_data ek_button_data = {
 300         .buttons        = ek_buttons,
 301         .nbuttons       = ARRAY_SIZE(ek_buttons),
 302 };
 303
 304 static struct platform_device ek_button_device = {
 305         .name           = "gpio-keys",
 306         .id             = -1,
 307         .num_resources  = 0,
 308         .dev            = {
 309                 .platform_data  = &ek_button_data,
 310         }
 311 };
 312
 313 static void __init ek_add_device_buttons(void)
 314 {
 315         at91_set_gpio_input(AT91_PIN_PA30, 1);  /* btn3 */
 316         at91_set_deglitch(AT91_PIN_PA30, 1);
 317         at91_set_gpio_input(AT91_PIN_PA31, 1);  /* btn4 */
 318         at91_set_deglitch(AT91_PIN_PA31, 1);
 319
 320         platform_device_register(&ek_button_device);
 321 }
 322 #else
 323 static void __init ek_add_device_buttons(void) {}
 324 #endif
 325
 326
 327 static void __init ek_board_init(void)
 328 {
 329         /* Serial */
 330         at91_add_device_serial();
 331         /* USB Host */
 332         at91_add_device_usbh(&ek_usbh_data);
 333         /* USB Device */
 334         at91_add_device_udc(&ek_udc_data);
 335         /* SPI */
 336         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 337         /* NAND */
 338         ek_add_device_nand();
 339         /* Ethernet */
 340         at91_add_device_eth(&ek_macb_data);
 341         /* MMC */
 342         at91_add_device_mmc(0, &ek_mmc_data);
 343         /* I2C */
 344         at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 345         /* SSC (to AT73C213) */
 346         at73c213_set_clk(&at73c213_data);
 347         at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
 348         /* LEDs */
 349         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 350         /* Push Buttons */
 351         ek_add_device_buttons();
 352 }
 353
 354 MACHINE_START(AT91SAM9260EK, "Atmel AT91SAM9260-EK")
 355         /* Maintainer: Atmel */
 356         .timer          = &at91sam926x_timer,
 357         .map_io         = at91sam9260_map_io,
 358         .init_early     = ek_init_early,
 359         .init_irq       = ek_init_irq,
 360         .init_machine   = ek_board_init,
 361 MACHINE_END