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/clk.h>
  28
  29 #include <mach/hardware.h>
  30 #include <asm/setup.h>
  31 #include <asm/mach-types.h>
  32 #include <asm/irq.h>
  33
  34 #include <asm/mach/arch.h>
  35 #include <asm/mach/map.h>
  36 #include <asm/mach/irq.h>
  37
  38 #include <mach/board.h>
  39 #include <mach/gpio.h>
  40 #include <mach/at91sam9_smc.h>
  41
  42 #include "sam9_smc.h"
  43 #include "generic.h"
  44
  45
  46 static void __init ek_map_io(void)
  47 {
  48         /* Initialize processor: 18.432 MHz crystal */
  49         at91sam9260_initialize(18432000);
  50
  51         /* DGBU on ttyS0. (Rx & Tx only) */
  52         at91_register_uart(0, 0, 0);
  53
  54         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
  55         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
  56                            | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
  57                            | ATMEL_UART_RI);
  58
  59         /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
  60         at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
  61
  62         /* set serial console to ttyS0 (ie, DBGU) */
  63         at91_set_serial_console(0);
  64 }
  65
  66 static void __init ek_init_irq(void)
  67 {
  68         at91sam9260_init_interrupts(NULL);
  69 }
  70
  71
  72 /*
  73  * USB Host port
  74  */
  75 static struct at91_usbh_data __initdata ek_usbh_data = {
  76         .ports          = 2,
  77 };
  78
  79 /*
  80  * USB Device port
  81  */
  82 static struct at91_udc_data __initdata ek_udc_data = {
  83         .vbus_pin       = AT91_PIN_PC5,
  84         .pullup_pin     = 0,            /* pull-up driven by UDC */
  85 };
  86
  87
  88 /*
  89  * SPI devices.
  90  */
  91 static struct spi_board_info ek_spi_devices[] = {
  92 #if !defined(CONFIG_MMC_AT91)
  93         {       /* DataFlash chip */
  94                 .modalias       = "mtd_dataflash",
  95                 .chip_select    = 1,
  96                 .max_speed_hz   = 15 * 1000 * 1000,
  97                 .bus_num        = 0,
  98         },
  99 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 100         {       /* DataFlash card */
 101                 .modalias       = "mtd_dataflash",
 102                 .chip_select    = 0,
 103                 .max_speed_hz   = 15 * 1000 * 1000,
 104                 .bus_num        = 0,
 105         },
 106 #endif
 107 #endif
 108 };
 109
 110
 111 /*
 112  * MACB Ethernet device
 113  */
 114 static struct at91_eth_data __initdata ek_macb_data = {
 115         .phy_irq_pin    = AT91_PIN_PA7,
 116         .is_rmii        = 1,
 117 };
 118
 119
 120 /*
 121  * NAND flash
 122  */
 123 static struct mtd_partition __initdata ek_nand_partition[] = {
 124         {
 125                 .name   = "Bootstrap",
 126                 .offset = 0,
 127                 .size   = 4 * SZ_1M,
 128         },
 129         {
 130                 .name   = "Partition 1",
 131                 .offset = MTDPART_OFS_NXTBLK,
 132                 .size   = 60 * SZ_1M,
 133         },
 134         {
 135                 .name   = "Partition 2",
 136                 .offset = MTDPART_OFS_NXTBLK,
 137                 .size   = MTDPART_SIZ_FULL,
 138         },
 139 };
 140
 141 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 142 {
 143         *num_partitions = ARRAY_SIZE(ek_nand_partition);
 144         return ek_nand_partition;
 145 }
 146
 147 /* det_pin is not connected */
 148 static struct atmel_nand_data __initdata ek_nand_data = {
 149         .ale            = 21,
 150         .cle            = 22,
 151         .rdy_pin        = AT91_PIN_PC13,
 152         .enable_pin     = AT91_PIN_PC14,
 153         .partition_info = nand_partitions,
 154 #if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
 155         .bus_width_16   = 1,
 156 #else
 157         .bus_width_16   = 0,
 158 #endif
 159 };
 160
 161 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 162         .ncs_read_setup         = 0,
 163         .nrd_setup              = 2,
 164         .ncs_write_setup        = 0,
 165         .nwe_setup              = 2,
 166
 167         .ncs_read_pulse         = 4,
 168         .nrd_pulse              = 4,
 169         .ncs_write_pulse        = 4,
 170         .nwe_pulse              = 4,
 171
 172         .read_cycle             = 7,
 173         .write_cycle            = 7,
 174
 175         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 176         .tdf_cycles             = 3,
 177 };
 178
 179 static void __init ek_add_device_nand(void)
 180 {
 181         /* setup bus-width (8 or 16) */
 182         if (ek_nand_data.bus_width_16)
 183                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 184         else
 185                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 186
 187         /* configure chip-select 3 (NAND) */
 188         sam9_smc_configure(3, &ek_nand_smc_config);
 189
 190         at91_add_device_nand(&ek_nand_data);
 191 }
 192
 193
 194 /*
 195  * MCI (SD/MMC)
 196  * det_pin, wp_pin and vcc_pin are not connected
 197  */
 198 static struct at91_mmc_data __initdata ek_mmc_data = {
 199         .slot_b         = 1,
 200         .wire4          = 1,
 201 };
 202
 203
 204 /*
 205  * LEDs
 206  */
 207 static struct gpio_led ek_leds[] = {
 208         {       /* "bottom" led, green, userled1 to be defined */
 209                 .name                   = "ds5",
 210                 .gpio                   = AT91_PIN_PA6,
 211                 .active_low             = 1,
 212                 .default_trigger        = "none",
 213         },
 214         {       /* "power" led, yellow */
 215                 .name                   = "ds1",
 216                 .gpio                   = AT91_PIN_PA9,
 217                 .default_trigger        = "heartbeat",
 218         }
 219 };
 220
 221 static void __init ek_board_init(void)
 222 {
 223         /* Serial */
 224         at91_add_device_serial();
 225         /* USB Host */
 226         at91_add_device_usbh(&ek_usbh_data);
 227         /* USB Device */
 228         at91_add_device_udc(&ek_udc_data);
 229         /* SPI */
 230         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 231         /* NAND */
 232         ek_add_device_nand();
 233         /* Ethernet */
 234         at91_add_device_eth(&ek_macb_data);
 235         /* MMC */
 236         at91_add_device_mmc(0, &ek_mmc_data);
 237         /* I2C */
 238         at91_add_device_i2c(NULL, 0);
 239         /* LEDs */
 240         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 241         /* PCK0 provides MCLK to the WM8731 */
 242         at91_set_B_periph(AT91_PIN_PC1, 0);
 243         /* SSC (for WM8731) */
 244         at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
 245 }
 246
 247 MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK")
 248         /* Maintainer: Atmel */
 249         .phys_io        = AT91_BASE_SYS,
 250         .io_pg_offst    = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
 251         .boot_params    = AT91_SDRAM_BASE + 0x100,
 252         .timer          = &at91sam926x_timer,
 253         .map_io         = ek_map_io,
 254         .init_irq       = ek_init_irq,
 255         .init_machine   = ek_board_init,
 256 MACHINE_END