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