arch/arm/mach-at91/board-stamp9g20.c

   1 /*
   2  *  Copyright (C) 2010 Christian Glindkamp <christian.glindkamp@taskit.de>
   3  *                     taskit GmbH
   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/mm.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/gpio.h>
  23 #include <linux/w1-gpio.h>
  24
  25 #include <asm/mach-types.h>
  26 #include <asm/mach/arch.h>
  27
  28 #include <mach/board.h>
  29 #include <mach/at91sam9_smc.h>
  30
  31 #include "sam9_smc.h"
  32 #include "generic.h"
  33
  34
  35 void __init stamp9g20_init_early(void)
  36 {
  37         /* Initialize processor: 18.432 MHz crystal */
  38         at91_initialize(18432000);
  39
  40         /* DGBU on ttyS0. (Rx & Tx only) */
  41         at91_register_uart(0, 0, 0);
  42
  43         /* set serial console to ttyS0 (ie, DBGU) */
  44         at91_set_serial_console(0);
  45 }
  46
  47 static void __init stamp9g20evb_init_early(void)
  48 {
  49         stamp9g20_init_early();
  50
  51         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
  52         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
  53                                                 | ATMEL_UART_DTR | ATMEL_UART_DSR
  54                                                 | ATMEL_UART_DCD | ATMEL_UART_RI);
  55 }
  56
  57 static void __init portuxg20_init_early(void)
  58 {
  59         stamp9g20_init_early();
  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
  64                                                 | ATMEL_UART_DCD | ATMEL_UART_RI);
  65
  66         /* USART1 on ttyS2. (Rx, Tx, CTS, RTS) */
  67         at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
  68
  69         /* USART2 on ttyS3. (Rx, Tx, CTS, RTS) */
  70         at91_register_uart(AT91SAM9260_ID_US2, 3, ATMEL_UART_CTS | ATMEL_UART_RTS);
  71
  72         /* USART4 on ttyS5. (Rx, Tx only) */
  73         at91_register_uart(AT91SAM9260_ID_US4, 5, 0);
  74
  75         /* USART5 on ttyS6. (Rx, Tx only) */
  76         at91_register_uart(AT91SAM9260_ID_US5, 6, 0);
  77 }
  78
  79 /*
  80  * NAND flash
  81  */
  82 static struct atmel_nand_data __initdata nand_data = {
  83         .ale            = 21,
  84         .cle            = 22,
  85         .rdy_pin        = AT91_PIN_PC13,
  86         .enable_pin     = AT91_PIN_PC14,
  87         .bus_width_16   = 0,
  88 };
  89
  90 static struct sam9_smc_config __initdata nand_smc_config = {
  91         .ncs_read_setup         = 0,
  92         .nrd_setup              = 2,
  93         .ncs_write_setup        = 0,
  94         .nwe_setup              = 2,
  95
  96         .ncs_read_pulse         = 4,
  97         .nrd_pulse              = 4,
  98         .ncs_write_pulse        = 4,
  99         .nwe_pulse              = 4,
 100
 101         .read_cycle             = 7,
 102         .write_cycle            = 7,
 103
 104         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 105         .tdf_cycles             = 3,
 106 };
 107
 108 static void __init add_device_nand(void)
 109 {
 110         /* configure chip-select 3 (NAND) */
 111         sam9_smc_configure(3, &nand_smc_config);
 112
 113         at91_add_device_nand(&nand_data);
 114 }
 115
 116
 117 /*
 118  * MCI (SD/MMC)
 119  * det_pin, wp_pin and vcc_pin are not connected
 120  */
 121 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 122 static struct mci_platform_data __initdata mmc_data = {
 123         .slot[0] = {
 124                 .bus_width      = 4,
 125         },
 126 };
 127 #else
 128 static struct at91_mmc_data __initdata mmc_data = {
 129         .slot_b         = 0,
 130         .wire4          = 1,
 131 };
 132 #endif
 133
 134
 135 /*
 136  * USB Host port
 137  */
 138 static struct at91_usbh_data __initdata usbh_data = {
 139         .ports          = 2,
 140 };
 141
 142
 143 /*
 144  * USB Device port
 145  */
 146 static struct at91_udc_data __initdata portuxg20_udc_data = {
 147         .vbus_pin       = AT91_PIN_PC7,
 148         .pullup_pin     = 0,            /* pull-up driven by UDC */
 149 };
 150
 151 static struct at91_udc_data __initdata stamp9g20evb_udc_data = {
 152         .vbus_pin       = AT91_PIN_PA22,
 153         .pullup_pin     = 0,            /* pull-up driven by UDC */
 154 };
 155
 156
 157 /*
 158  * MACB Ethernet device
 159  */
 160 static struct at91_eth_data __initdata macb_data = {
 161         .phy_irq_pin    = AT91_PIN_PA28,
 162         .is_rmii        = 1,
 163 };
 164
 165
 166 /*
 167  * LEDs
 168  */
 169 static struct gpio_led portuxg20_leds[] = {
 170         {
 171                 .name                   = "LED2",
 172                 .gpio                   = AT91_PIN_PC5,
 173                 .default_trigger        = "none",
 174         }, {
 175                 .name                   = "LED3",
 176                 .gpio                   = AT91_PIN_PC4,
 177                 .default_trigger        = "none",
 178         }, {
 179                 .name                   = "LED4",
 180                 .gpio                   = AT91_PIN_PC10,
 181                 .default_trigger        = "heartbeat",
 182         }
 183 };
 184
 185 static struct gpio_led stamp9g20evb_leds[] = {
 186         {
 187                 .name                   = "D8",
 188                 .gpio                   = AT91_PIN_PB18,
 189                 .active_low             = 1,
 190                 .default_trigger        = "none",
 191         }, {
 192                 .name                   = "D9",
 193                 .gpio                   = AT91_PIN_PB19,
 194                 .active_low             = 1,
 195                 .default_trigger        = "none",
 196         }, {
 197                 .name                   = "D10",
 198                 .gpio                   = AT91_PIN_PB20,
 199                 .active_low             = 1,
 200                 .default_trigger        = "heartbeat",
 201         }
 202 };
 203
 204
 205 /*
 206  * SPI devices
 207  */
 208 static struct spi_board_info portuxg20_spi_devices[] = {
 209         {
 210                 .modalias       = "spidev",
 211                 .chip_select    = 0,
 212                 .max_speed_hz   = 1 * 1000 * 1000,
 213                 .bus_num        = 0,
 214         }, {
 215                 .modalias       = "spidev",
 216                 .chip_select    = 0,
 217                 .max_speed_hz   = 1 * 1000 * 1000,
 218                 .bus_num        = 1,
 219         },
 220 };
 221
 222
 223 /*
 224  * Dallas 1-Wire
 225  */
 226 static struct w1_gpio_platform_data w1_gpio_pdata = {
 227         .pin            = AT91_PIN_PA29,
 228         .is_open_drain  = 1,
 229 };
 230
 231 static struct platform_device w1_device = {
 232         .name                   = "w1-gpio",
 233         .id                     = -1,
 234         .dev.platform_data      = &w1_gpio_pdata,
 235 };
 236
 237 void add_w1(void)
 238 {
 239         at91_set_GPIO_periph(w1_gpio_pdata.pin, 1);
 240         at91_set_multi_drive(w1_gpio_pdata.pin, 1);
 241         platform_device_register(&w1_device);
 242 }
 243
 244
 245 void __init stamp9g20_board_init(void)
 246 {
 247         /* Serial */
 248         at91_add_device_serial();
 249         /* NAND */
 250         add_device_nand();
 251         /* MMC */
 252 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 253         at91_add_device_mci(0, &mmc_data);
 254 #else
 255         at91_add_device_mmc(0, &mmc_data);
 256 #endif
 257         /* W1 */
 258         add_w1();
 259 }
 260
 261 static void __init portuxg20_board_init(void)
 262 {
 263         stamp9g20_board_init();
 264         /* USB Host */
 265         at91_add_device_usbh(&usbh_data);
 266         /* USB Device */
 267         at91_add_device_udc(&portuxg20_udc_data);
 268         /* Ethernet */
 269         at91_add_device_eth(&macb_data);
 270         /* I2C */
 271         at91_add_device_i2c(NULL, 0);
 272         /* SPI */
 273         at91_add_device_spi(portuxg20_spi_devices, ARRAY_SIZE(portuxg20_spi_devices));
 274         /* LEDs */
 275         at91_gpio_leds(portuxg20_leds, ARRAY_SIZE(portuxg20_leds));
 276 }
 277
 278 static void __init stamp9g20evb_board_init(void)
 279 {
 280         stamp9g20_board_init();
 281         /* USB Host */
 282         at91_add_device_usbh(&usbh_data);
 283         /* USB Device */
 284         at91_add_device_udc(&stamp9g20evb_udc_data);
 285         /* Ethernet */
 286         at91_add_device_eth(&macb_data);
 287         /* I2C */
 288         at91_add_device_i2c(NULL, 0);
 289         /* LEDs */
 290         at91_gpio_leds(stamp9g20evb_leds, ARRAY_SIZE(stamp9g20evb_leds));
 291 }
 292
 293 MACHINE_START(PORTUXG20, "taskit PortuxG20")
 294         /* Maintainer: taskit GmbH */
 295         .timer          = &at91sam926x_timer,
 296         .map_io         = at91_map_io,
 297         .init_early     = portuxg20_init_early,
 298         .init_irq       = at91_init_irq_default,
 299         .init_machine   = portuxg20_board_init,
 300 MACHINE_END
 301
 302 MACHINE_START(STAMP9G20, "taskit Stamp9G20")
 303         /* Maintainer: taskit GmbH */
 304         .timer          = &at91sam926x_timer,
 305         .map_io         = at91_map_io,
 306         .init_early     = stamp9g20evb_init_early,
 307         .init_irq       = at91_init_irq_default,
 308         .init_machine   = stamp9g20evb_board_init,
 309 MACHINE_END