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/at91sam9_smc.h>
  29
  30 #include "at91_aic.h"
  31 #include "board.h"
  32 #include "sam9_smc.h"
  33 #include "generic.h"
  34
  35
  36 void __init stamp9g20_init_early(void)
  37 {
  38         /* Initialize processor: 18.432 MHz crystal */
  39         at91_initialize(18432000);
  40 }
  41
  42 /*
  43  * NAND flash
  44  */
  45 static struct atmel_nand_data __initdata nand_data = {
  46         .ale            = 21,
  47         .cle            = 22,
  48         .rdy_pin        = AT91_PIN_PC13,
  49         .enable_pin     = AT91_PIN_PC14,
  50         .bus_width_16   = 0,
  51         .det_pin        = -EINVAL,
  52         .ecc_mode       = NAND_ECC_SOFT,
  53 };
  54
  55 static struct sam9_smc_config __initdata nand_smc_config = {
  56         .ncs_read_setup         = 0,
  57         .nrd_setup              = 2,
  58         .ncs_write_setup        = 0,
  59         .nwe_setup              = 2,
  60
  61         .ncs_read_pulse         = 4,
  62         .nrd_pulse              = 4,
  63         .ncs_write_pulse        = 4,
  64         .nwe_pulse              = 4,
  65
  66         .read_cycle             = 7,
  67         .write_cycle            = 7,
  68
  69         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
  70         .tdf_cycles             = 3,
  71 };
  72
  73 static void __init add_device_nand(void)
  74 {
  75         /* configure chip-select 3 (NAND) */
  76         sam9_smc_configure(0, 3, &nand_smc_config);
  77
  78         at91_add_device_nand(&nand_data);
  79 }
  80
  81
  82 /*
  83  * MCI (SD/MMC)
  84  * det_pin, wp_pin and vcc_pin are not connected
  85  */
  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
  94
  95 /*
  96  * USB Host port
  97  */
  98 static struct at91_usbh_data __initdata usbh_data = {
  99         .ports          = 2,
 100         .vbus_pin       = {-EINVAL, -EINVAL},
 101         .overcurrent_pin= {-EINVAL, -EINVAL},
 102 };
 103
 104
 105 /*
 106  * USB Device port
 107  */
 108 static struct at91_udc_data __initdata portuxg20_udc_data = {
 109         .vbus_pin       = AT91_PIN_PC7,
 110         .pullup_pin     = -EINVAL,              /* pull-up driven by UDC */
 111 };
 112
 113 static struct at91_udc_data __initdata stamp9g20evb_udc_data = {
 114         .vbus_pin       = AT91_PIN_PA22,
 115         .pullup_pin     = -EINVAL,              /* pull-up driven by UDC */
 116 };
 117
 118
 119 /*
 120  * MACB Ethernet device
 121  */
 122 static struct macb_platform_data __initdata macb_data = {
 123         .phy_irq_pin    = AT91_PIN_PA28,
 124         .is_rmii        = 1,
 125 };
 126
 127
 128 /*
 129  * LEDs
 130  */
 131 static struct gpio_led portuxg20_leds[] = {
 132         {
 133                 .name                   = "LED2",
 134                 .gpio                   = AT91_PIN_PC5,
 135                 .default_trigger        = "none",
 136         }, {
 137                 .name                   = "LED3",
 138                 .gpio                   = AT91_PIN_PC4,
 139                 .default_trigger        = "none",
 140         }, {
 141                 .name                   = "LED4",
 142                 .gpio                   = AT91_PIN_PC10,
 143                 .default_trigger        = "heartbeat",
 144         }
 145 };
 146
 147 static struct gpio_led stamp9g20evb_leds[] = {
 148         {
 149                 .name                   = "D8",
 150                 .gpio                   = AT91_PIN_PB18,
 151                 .active_low             = 1,
 152                 .default_trigger        = "none",
 153         }, {
 154                 .name                   = "D9",
 155                 .gpio                   = AT91_PIN_PB19,
 156                 .active_low             = 1,
 157                 .default_trigger        = "none",
 158         }, {
 159                 .name                   = "D10",
 160                 .gpio                   = AT91_PIN_PB20,
 161                 .active_low             = 1,
 162                 .default_trigger        = "heartbeat",
 163         }
 164 };
 165
 166
 167 /*
 168  * SPI devices
 169  */
 170 static struct spi_board_info portuxg20_spi_devices[] = {
 171         {
 172                 .modalias       = "spidev",
 173                 .chip_select    = 0,
 174                 .max_speed_hz   = 1 * 1000 * 1000,
 175                 .bus_num        = 0,
 176         }, {
 177                 .modalias       = "spidev",
 178                 .chip_select    = 0,
 179                 .max_speed_hz   = 1 * 1000 * 1000,
 180                 .bus_num        = 1,
 181         },
 182 };
 183
 184
 185 /*
 186  * Dallas 1-Wire
 187  */
 188 static struct w1_gpio_platform_data w1_gpio_pdata = {
 189         .pin            = AT91_PIN_PA29,
 190         .is_open_drain  = 1,
 191         .ext_pullup_enable_pin  = -EINVAL,
 192 };
 193
 194 static struct platform_device w1_device = {
 195         .name                   = "w1-gpio",
 196         .id                     = -1,
 197         .dev.platform_data      = &w1_gpio_pdata,
 198 };
 199
 200 void add_w1(void)
 201 {
 202         at91_set_GPIO_periph(w1_gpio_pdata.pin, 1);
 203         at91_set_multi_drive(w1_gpio_pdata.pin, 1);
 204         platform_device_register(&w1_device);
 205 }
 206
 207
 208 void __init stamp9g20_board_init(void)
 209 {
 210         /* Serial */
 211         /* DGBU on ttyS0. (Rx & Tx only) */
 212         at91_register_uart(0, 0, 0);
 213         at91_add_device_serial();
 214         /* NAND */
 215         add_device_nand();
 216         /* MMC */
 217         at91_add_device_mci(0, &mmc_data);
 218         /* W1 */
 219         add_w1();
 220 }
 221
 222 static void __init portuxg20_board_init(void)
 223 {
 224         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
 225         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
 226                                                 | ATMEL_UART_DTR | ATMEL_UART_DSR
 227                                                 | ATMEL_UART_DCD | ATMEL_UART_RI);
 228
 229         /* USART1 on ttyS2. (Rx, Tx, CTS, RTS) */
 230         at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
 231
 232         /* USART2 on ttyS3. (Rx, Tx, CTS, RTS) */
 233         at91_register_uart(AT91SAM9260_ID_US2, 3, ATMEL_UART_CTS | ATMEL_UART_RTS);
 234
 235         /* USART4 on ttyS5. (Rx, Tx only) */
 236         at91_register_uart(AT91SAM9260_ID_US4, 5, 0);
 237
 238         /* USART5 on ttyS6. (Rx, Tx only) */
 239         at91_register_uart(AT91SAM9260_ID_US5, 6, 0);
 240         stamp9g20_board_init();
 241         /* USB Host */
 242         at91_add_device_usbh(&usbh_data);
 243         /* USB Device */
 244         at91_add_device_udc(&portuxg20_udc_data);
 245         /* Ethernet */
 246         at91_add_device_eth(&macb_data);
 247         /* I2C */
 248         at91_add_device_i2c(NULL, 0);
 249         /* SPI */
 250         at91_add_device_spi(portuxg20_spi_devices, ARRAY_SIZE(portuxg20_spi_devices));
 251         /* LEDs */
 252         at91_gpio_leds(portuxg20_leds, ARRAY_SIZE(portuxg20_leds));
 253 }
 254
 255 static void __init stamp9g20evb_board_init(void)
 256 {
 257         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
 258         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
 259                                                 | ATMEL_UART_DTR | ATMEL_UART_DSR
 260                                                 | ATMEL_UART_DCD | ATMEL_UART_RI);
 261         stamp9g20_board_init();
 262         /* USB Host */
 263         at91_add_device_usbh(&usbh_data);
 264         /* USB Device */
 265         at91_add_device_udc(&stamp9g20evb_udc_data);
 266         /* Ethernet */
 267         at91_add_device_eth(&macb_data);
 268         /* I2C */
 269         at91_add_device_i2c(NULL, 0);
 270         /* LEDs */
 271         at91_gpio_leds(stamp9g20evb_leds, ARRAY_SIZE(stamp9g20evb_leds));
 272 }
 273
 274 MACHINE_START(PORTUXG20, "taskit PortuxG20")
 275         /* Maintainer: taskit GmbH */
 276         .init_time      = at91sam926x_pit_init,
 277         .map_io         = at91_map_io,
 278         .handle_irq     = at91_aic_handle_irq,
 279         .init_early     = stamp9g20_init_early,
 280         .init_irq       = at91_init_irq_default,
 281         .init_machine   = portuxg20_board_init,
 282 MACHINE_END
 283
 284 MACHINE_START(STAMP9G20, "taskit Stamp9G20")
 285         /* Maintainer: taskit GmbH */
 286         .init_time      = at91sam926x_pit_init,
 287         .map_io         = at91_map_io,
 288         .handle_irq     = at91_aic_handle_irq,
 289         .init_early     = stamp9g20_init_early,
 290         .init_irq       = at91_init_irq_default,
 291         .init_machine   = stamp9g20evb_board_init,
 292 MACHINE_END