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