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/gpio.h>
  24 #include <linux/init.h>
  25 #include <linux/mm.h>
  26 #include <linux/module.h>
  27 #include <linux/platform_device.h>
  28 #include <linux/spi/spi.h>
  29 #include <linux/spi/at73c213.h>
  30 #include <linux/clk.h>
  31 #include <linux/i2c/at24.h>
  32 #include <linux/gpio_keys.h>
  33 #include <linux/input.h>
  34
  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/hardware.h>
  44 #include <mach/at91sam9_smc.h>
  45 #include <mach/system_rev.h>
  46
  47 #include "at91_aic.h"
  48 #include "at91_shdwc.h"
  49 #include "board.h"
  50 #include "sam9_smc.h"
  51 #include "generic.h"
  52
  53
  54 static void __init ek_init_early(void)
  55 {
  56         /* Initialize processor: 18.432 MHz crystal */
  57         at91_initialize(18432000);
  58 }
  59
  60 /*
  61  * USB Host port
  62  */
  63 static struct at91_usbh_data __initdata ek_usbh_data = {
  64         .ports          = 2,
  65         .vbus_pin       = {-EINVAL, -EINVAL},
  66         .overcurrent_pin= {-EINVAL, -EINVAL},
  67 };
  68
  69 /*
  70  * USB Device port
  71  */
  72 static struct at91_udc_data __initdata ek_udc_data = {
  73         .vbus_pin       = AT91_PIN_PC5,
  74         .pullup_pin     = -EINVAL,              /* pull-up driven by UDC */
  75 };
  76
  77
  78 /*
  79  * Audio
  80  */
  81 static struct at73c213_board_info at73c213_data = {
  82         .ssc_id         = 0,
  83         .shortname      = "AT91SAM9260-EK external DAC",
  84 };
  85
  86 #if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
  87 static void __init at73c213_set_clk(struct at73c213_board_info *info)
  88 {
  89         struct clk *pck0;
  90         struct clk *plla;
  91
  92         pck0 = clk_get(NULL, "pck0");
  93         plla = clk_get(NULL, "plla");
  94
  95         /* AT73C213 MCK Clock */
  96         at91_set_B_periph(AT91_PIN_PC1, 0);     /* PCK0 */
  97
  98         clk_set_parent(pck0, plla);
  99         clk_put(plla);
 100
 101         info->dac_clk = pck0;
 102 }
 103 #else
 104 static void __init at73c213_set_clk(struct at73c213_board_info *info) {}
 105 #endif
 106
 107 /*
 108  * SPI devices.
 109  */
 110 static struct spi_board_info ek_spi_devices[] = {
 111 #if !IS_ENABLED(CONFIG_MMC_ATMELMCI)
 112         {       /* DataFlash chip */
 113                 .modalias       = "mtd_dataflash",
 114                 .chip_select    = 1,
 115                 .max_speed_hz   = 15 * 1000 * 1000,
 116                 .bus_num        = 0,
 117         },
 118 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 119         {       /* DataFlash card */
 120                 .modalias       = "mtd_dataflash",
 121                 .chip_select    = 0,
 122                 .max_speed_hz   = 15 * 1000 * 1000,
 123                 .bus_num        = 0,
 124         },
 125 #endif
 126 #endif
 127 #if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
 128         {       /* AT73C213 DAC */
 129                 .modalias       = "at73c213",
 130                 .chip_select    = 0,
 131                 .max_speed_hz   = 10 * 1000 * 1000,
 132                 .bus_num        = 1,
 133                 .mode           = SPI_MODE_1,
 134                 .platform_data  = &at73c213_data,
 135         },
 136 #endif
 137 };
 138
 139
 140 /*
 141  * MACB Ethernet device
 142  */
 143 static struct macb_platform_data __initdata ek_macb_data = {
 144         .phy_irq_pin    = AT91_PIN_PA7,
 145         .is_rmii        = 1,
 146 };
 147
 148
 149 /*
 150  * NAND flash
 151  */
 152 static struct mtd_partition __initdata ek_nand_partition[] = {
 153         {
 154                 .name   = "Partition 1",
 155                 .offset = 0,
 156                 .size   = SZ_256K,
 157         },
 158         {
 159                 .name   = "Partition 2",
 160                 .offset = MTDPART_OFS_NXTBLK,
 161                 .size   = MTDPART_SIZ_FULL,
 162         },
 163 };
 164
 165 static struct atmel_nand_data __initdata ek_nand_data = {
 166         .ale            = 21,
 167         .cle            = 22,
 168         .det_pin        = -EINVAL,
 169         .rdy_pin        = AT91_PIN_PC13,
 170         .enable_pin     = AT91_PIN_PC14,
 171         .ecc_mode       = NAND_ECC_SOFT,
 172         .on_flash_bbt   = 1,
 173         .parts          = ek_nand_partition,
 174         .num_parts      = ARRAY_SIZE(ek_nand_partition),
 175 };
 176
 177 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 178         .ncs_read_setup         = 0,
 179         .nrd_setup              = 1,
 180         .ncs_write_setup        = 0,
 181         .nwe_setup              = 1,
 182
 183         .ncs_read_pulse         = 3,
 184         .nrd_pulse              = 3,
 185         .ncs_write_pulse        = 3,
 186         .nwe_pulse              = 3,
 187
 188         .read_cycle             = 5,
 189         .write_cycle            = 5,
 190
 191         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 192         .tdf_cycles             = 2,
 193 };
 194
 195 static void __init ek_add_device_nand(void)
 196 {
 197         ek_nand_data.bus_width_16 = board_have_nand_16bit();
 198         /* setup bus-width (8 or 16) */
 199         if (ek_nand_data.bus_width_16)
 200                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 201         else
 202                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 203
 204         /* configure chip-select 3 (NAND) */
 205         sam9_smc_configure(0, 3, &ek_nand_smc_config);
 206
 207         at91_add_device_nand(&ek_nand_data);
 208 }
 209
 210
 211 /*
 212  * MCI (SD/MMC)
 213  */
 214 static struct mci_platform_data __initdata ek_mci0_data = {
 215         .slot[1] = {
 216                 .bus_width      = 4,
 217                 .detect_pin     = -EINVAL,
 218                 .wp_pin         = -EINVAL,
 219         },
 220 };
 221
 222
 223 /*
 224  * LEDs
 225  */
 226 static struct gpio_led ek_leds[] = {
 227         {       /* "bottom" led, green, userled1 to be defined */
 228                 .name                   = "ds5",
 229                 .gpio                   = AT91_PIN_PA6,
 230                 .active_low             = 1,
 231                 .default_trigger        = "none",
 232         },
 233         {       /* "power" led, yellow */
 234                 .name                   = "ds1",
 235                 .gpio                   = AT91_PIN_PA9,
 236                 .default_trigger        = "heartbeat",
 237         }
 238 };
 239
 240 /*
 241  * I2C devices
 242  */
 243 static struct at24_platform_data at24c512 = {
 244         .byte_len       = SZ_512K / 8,
 245         .page_size      = 128,
 246         .flags          = AT24_FLAG_ADDR16,
 247 };
 248
 249 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 250         {
 251                 I2C_BOARD_INFO("24c512", 0x50),
 252                 .platform_data = &at24c512,
 253         },
 254         /* more devices can be added using expansion connectors */
 255 };
 256
 257
 258 /*
 259  * GPIO Buttons
 260  */
 261 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 262 static struct gpio_keys_button ek_buttons[] = {
 263         {
 264                 .gpio           = AT91_PIN_PA30,
 265                 .code           = BTN_3,
 266                 .desc           = "Button 3",
 267                 .active_low     = 1,
 268                 .wakeup         = 1,
 269         },
 270         {
 271                 .gpio           = AT91_PIN_PA31,
 272                 .code           = BTN_4,
 273                 .desc           = "Button 4",
 274                 .active_low     = 1,
 275                 .wakeup         = 1,
 276         }
 277 };
 278
 279 static struct gpio_keys_platform_data ek_button_data = {
 280         .buttons        = ek_buttons,
 281         .nbuttons       = ARRAY_SIZE(ek_buttons),
 282 };
 283
 284 static struct platform_device ek_button_device = {
 285         .name           = "gpio-keys",
 286         .id             = -1,
 287         .num_resources  = 0,
 288         .dev            = {
 289                 .platform_data  = &ek_button_data,
 290         }
 291 };
 292
 293 static void __init ek_add_device_buttons(void)
 294 {
 295         at91_set_gpio_input(AT91_PIN_PA30, 1);  /* btn3 */
 296         at91_set_deglitch(AT91_PIN_PA30, 1);
 297         at91_set_gpio_input(AT91_PIN_PA31, 1);  /* btn4 */
 298         at91_set_deglitch(AT91_PIN_PA31, 1);
 299
 300         platform_device_register(&ek_button_device);
 301 }
 302 #else
 303 static void __init ek_add_device_buttons(void) {}
 304 #endif
 305
 306
 307 static void __init ek_board_init(void)
 308 {
 309         /* Serial */
 310         /* DBGU on ttyS0. (Rx & Tx only) */
 311         at91_register_uart(0, 0, 0);
 312
 313         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
 314         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
 315                            | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
 316                            | ATMEL_UART_RI);
 317
 318         /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
 319         at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
 320         at91_add_device_serial();
 321         /* USB Host */
 322         at91_add_device_usbh(&ek_usbh_data);
 323         /* USB Device */
 324         at91_add_device_udc(&ek_udc_data);
 325         /* SPI */
 326         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 327         /* NAND */
 328         ek_add_device_nand();
 329         /* Ethernet */
 330         at91_add_device_eth(&ek_macb_data);
 331         /* MMC */
 332         at91_add_device_mci(0, &ek_mci0_data);
 333         /* I2C */
 334         at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 335         /* SSC (to AT73C213) */
 336         at73c213_set_clk(&at73c213_data);
 337         at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
 338         /* LEDs */
 339         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 340         /* Push Buttons */
 341         ek_add_device_buttons();
 342 }
 343
 344 MACHINE_START(AT91SAM9260EK, "Atmel AT91SAM9260-EK")
 345         /* Maintainer: Atmel */
 346         .init_time      = at91sam926x_pit_init,
 347         .map_io         = at91_map_io,
 348         .handle_irq     = at91_aic_handle_irq,
 349         .init_early     = ek_init_early,
 350         .init_irq       = at91_init_irq_default,
 351         .init_machine   = ek_board_init,
 352 MACHINE_END