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