Logo Search packages:      
Sourcecode: linux version File versions  Download package

board-stamp9g20.c

/*
 *  Copyright (C) 2010 Christian Glindkamp <christian.glindkamp@taskit.de>
 *                     taskit GmbH
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <linux/mm.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/w1-gpio.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>

#include <mach/board.h>
#include <mach/at91sam9_smc.h>

#include "sam9_smc.h"
#include "generic.h"


void __init stamp9g20_map_io(void)
{
      /* Initialize processor: 18.432 MHz crystal */
      at91sam9260_initialize(18432000);

      /* DGBU on ttyS0. (Rx & Tx only) */
      at91_register_uart(0, 0, 0);

      /* set serial console to ttyS0 (ie, DBGU) */
      at91_set_serial_console(0);
}

static void __init stamp9g20evb_map_io(void)
{
      stamp9g20_map_io();

      /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
      at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
                                    | ATMEL_UART_DTR | ATMEL_UART_DSR
                                    | ATMEL_UART_DCD | ATMEL_UART_RI);
}

static void __init portuxg20_map_io(void)
{
      stamp9g20_map_io();

      /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
      at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
                                    | ATMEL_UART_DTR | ATMEL_UART_DSR
                                    | ATMEL_UART_DCD | ATMEL_UART_RI);

      /* USART1 on ttyS2. (Rx, Tx, CTS, RTS) */
      at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);

      /* USART2 on ttyS3. (Rx, Tx, CTS, RTS) */
      at91_register_uart(AT91SAM9260_ID_US2, 3, ATMEL_UART_CTS | ATMEL_UART_RTS);

      /* USART4 on ttyS5. (Rx, Tx only) */
      at91_register_uart(AT91SAM9260_ID_US4, 5, 0);

      /* USART5 on ttyS6. (Rx, Tx only) */
      at91_register_uart(AT91SAM9260_ID_US5, 6, 0);
}

static void __init init_irq(void)
{
      at91sam9260_init_interrupts(NULL);
}


/*
 * NAND flash
 */
static struct atmel_nand_data __initdata nand_data = {
      .ale        = 21,
      .cle        = 22,
      .rdy_pin    = AT91_PIN_PC13,
      .enable_pin = AT91_PIN_PC14,
      .bus_width_16     = 0,
};

static struct sam9_smc_config __initdata nand_smc_config = {
      .ncs_read_setup         = 0,
      .nrd_setup        = 2,
      .ncs_write_setup  = 0,
      .nwe_setup        = 2,

      .ncs_read_pulse         = 4,
      .nrd_pulse        = 4,
      .ncs_write_pulse  = 4,
      .nwe_pulse        = 4,

      .read_cycle       = 7,
      .write_cycle            = 7,

      .mode             = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
      .tdf_cycles       = 3,
};

static void __init add_device_nand(void)
{
      /* configure chip-select 3 (NAND) */
      sam9_smc_configure(3, &nand_smc_config);

      at91_add_device_nand(&nand_data);
}


/*
 * MCI (SD/MMC)
 * det_pin, wp_pin and vcc_pin are not connected
 */
#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
static struct mci_platform_data __initdata mmc_data = {
      .slot[0] = {
            .bus_width  = 4,
      },
};
#else
static struct at91_mmc_data __initdata mmc_data = {
      .slot_b           = 0,
      .wire4            = 1,
};
#endif


/*
 * USB Host port
 */
static struct at91_usbh_data __initdata usbh_data = {
      .ports            = 2,
};


/*
 * USB Device port
 */
static struct at91_udc_data __initdata portuxg20_udc_data = {
      .vbus_pin   = AT91_PIN_PC7,
      .pullup_pin = 0,        /* pull-up driven by UDC */
};

static struct at91_udc_data __initdata stamp9g20evb_udc_data = {
      .vbus_pin   = AT91_PIN_PA22,
      .pullup_pin = 0,        /* pull-up driven by UDC */
};


/*
 * MACB Ethernet device
 */
static struct at91_eth_data __initdata macb_data = {
      .phy_irq_pin      = AT91_PIN_PA28,
      .is_rmii    = 1,
};


/*
 * LEDs
 */
static struct gpio_led portuxg20_leds[] = {
      {
            .name             = "LED2",
            .gpio             = AT91_PIN_PC5,
            .default_trigger  = "none",
      }, {
            .name             = "LED3",
            .gpio             = AT91_PIN_PC4,
            .default_trigger  = "none",
      }, {
            .name             = "LED4",
            .gpio             = AT91_PIN_PC10,
            .default_trigger  = "heartbeat",
      }
};

static struct gpio_led stamp9g20evb_leds[] = {
      {
            .name             = "D8",
            .gpio             = AT91_PIN_PB18,
            .active_low       = 1,
            .default_trigger  = "none",
      }, {
            .name             = "D9",
            .gpio             = AT91_PIN_PB19,
            .active_low       = 1,
            .default_trigger  = "none",
      }, {
            .name             = "D10",
            .gpio             = AT91_PIN_PB20,
            .active_low       = 1,
            .default_trigger  = "heartbeat",
      }
};


/*
 * SPI devices
 */
static struct spi_board_info portuxg20_spi_devices[] = {
      {
            .modalias   = "spidev",
            .chip_select      = 0,
            .max_speed_hz     = 1 * 1000 * 1000,
            .bus_num    = 0,
      }, {
            .modalias   = "spidev",
            .chip_select      = 0,
            .max_speed_hz     = 1 * 1000 * 1000,
            .bus_num    = 1,
      },
};


/*
 * Dallas 1-Wire
 */
static struct w1_gpio_platform_data w1_gpio_pdata = {
      .pin        = AT91_PIN_PA29,
      .is_open_drain    = 1,
};

static struct platform_device w1_device = {
      .name             = "w1-gpio",
      .id               = -1,
      .dev.platform_data      = &w1_gpio_pdata,
};

void add_w1(void)
{
      at91_set_GPIO_periph(w1_gpio_pdata.pin, 1);
      at91_set_multi_drive(w1_gpio_pdata.pin, 1);
      platform_device_register(&w1_device);
}


void __init stamp9g20_board_init(void)
{
      /* Serial */
      at91_add_device_serial();
      /* NAND */
      add_device_nand();
      /* MMC */
#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
      at91_add_device_mci(0, &mmc_data);
#else
      at91_add_device_mmc(0, &mmc_data);
#endif
      /* W1 */
      add_w1();
}

static void __init portuxg20_board_init(void)
{
      stamp9g20_board_init();
      /* USB Host */
      at91_add_device_usbh(&usbh_data);
      /* USB Device */
      at91_add_device_udc(&portuxg20_udc_data);
      /* Ethernet */
      at91_add_device_eth(&macb_data);
      /* I2C */
      at91_add_device_i2c(NULL, 0);
      /* SPI */
      at91_add_device_spi(portuxg20_spi_devices, ARRAY_SIZE(portuxg20_spi_devices));
      /* LEDs */
      at91_gpio_leds(portuxg20_leds, ARRAY_SIZE(portuxg20_leds));
}

static void __init stamp9g20evb_board_init(void)
{
      stamp9g20_board_init();
      /* USB Host */
      at91_add_device_usbh(&usbh_data);
      /* USB Device */
      at91_add_device_udc(&stamp9g20evb_udc_data);
      /* Ethernet */
      at91_add_device_eth(&macb_data);
      /* I2C */
      at91_add_device_i2c(NULL, 0);
      /* LEDs */
      at91_gpio_leds(stamp9g20evb_leds, ARRAY_SIZE(stamp9g20evb_leds));
}

MACHINE_START(PORTUXG20, "taskit PortuxG20")
      /* Maintainer: taskit GmbH */
      .boot_params      = AT91_SDRAM_BASE + 0x100,
      .timer            = &at91sam926x_timer,
      .map_io           = portuxg20_map_io,
      .init_irq   = init_irq,
      .init_machine     = portuxg20_board_init,
MACHINE_END

MACHINE_START(STAMP9G20, "taskit Stamp9G20")
      /* Maintainer: taskit GmbH */
      .boot_params      = AT91_SDRAM_BASE + 0x100,
      .timer            = &at91sam926x_timer,
      .map_io           = stamp9g20evb_map_io,
      .init_irq   = init_irq,
      .init_machine     = stamp9g20evb_board_init,
MACHINE_END

Generated by  Doxygen 1.6.0   Back to index