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board-sffsdr.c

/*
 * Lyrtech SFFSDR board support.
 *
 * Copyright (C) 2008 Philip Balister, OpenSDR <philip@opensdr.com>
 * Copyright (C) 2008 Lyrtech <www.lyrtech.com>
 *
 * Based on DV-EVM platform, original copyright follows:
 *
 * Copyright (C) 2007 MontaVista Software, Inc.
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/i2c/at24.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>

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

#include <mach/dm644x.h>
#include <mach/common.h>
#include <mach/i2c.h>
#include <mach/serial.h>
#include <mach/mux.h>
#include <mach/usb.h>

#define SFFSDR_PHY_ID         "0:01"
static struct mtd_partition davinci_sffsdr_nandflash_partition[] = {
      /* U-Boot Environment: Block 0
       * UBL:                Block 1
       * U-Boot:             Blocks 6-7 (256 kb)
       * Integrity Kernel:   Blocks 8-31 (3 Mb)
       * Integrity Data:     Blocks 100-END
       */
      {
            .name       = "Linux Kernel",
            .offset           = 32 * SZ_128K,
            .size       = 16 * SZ_128K, /* 2 Mb */
            .mask_flags = MTD_WRITEABLE, /* Force read-only */
      },
      {
            .name       = "Linux ROOT",
            .offset           = MTDPART_OFS_APPEND,
            .size       = 256 * SZ_128K, /* 32 Mb */
            .mask_flags = 0, /* R/W */
      },
};

static struct flash_platform_data davinci_sffsdr_nandflash_data = {
      .parts            = davinci_sffsdr_nandflash_partition,
      .nr_parts   = ARRAY_SIZE(davinci_sffsdr_nandflash_partition),
};

static struct resource davinci_sffsdr_nandflash_resource[] = {
      {
            .start            = DM644X_ASYNC_EMIF_DATA_CE0_BASE,
            .end        = DM644X_ASYNC_EMIF_DATA_CE0_BASE + SZ_16M - 1,
            .flags            = IORESOURCE_MEM,
      }, {
            .start            = DM644X_ASYNC_EMIF_CONTROL_BASE,
            .end        = DM644X_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
            .flags            = IORESOURCE_MEM,
      },
};

static struct platform_device davinci_sffsdr_nandflash_device = {
      .name       = "davinci_nand", /* Name of driver */
      .id         = 0,
      .dev        = {
            .platform_data    = &davinci_sffsdr_nandflash_data,
      },
      .num_resources    = ARRAY_SIZE(davinci_sffsdr_nandflash_resource),
      .resource   = davinci_sffsdr_nandflash_resource,
};

static struct at24_platform_data eeprom_info = {
      .byte_len   = (64*1024) / 8,
      .page_size  = 32,
      .flags            = AT24_FLAG_ADDR16,
};

static struct i2c_board_info __initdata i2c_info[] =  {
      {
            I2C_BOARD_INFO("24lc64", 0x50),
            .platform_data    = &eeprom_info,
      },
      /* Other I2C devices:
       * MSP430,  addr 0x23 (not used)
       * PCA9543, addr 0x70 (setup done by U-Boot)
       * ADS7828, addr 0x48 (ADC for voltage monitoring.)
       */
};

static struct davinci_i2c_platform_data i2c_pdata = {
      .bus_freq   = 20 /* kHz */,
      .bus_delay  = 100 /* usec */,
};

static void __init sffsdr_init_i2c(void)
{
      davinci_init_i2c(&i2c_pdata);
      i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
}

static struct platform_device *davinci_sffsdr_devices[] __initdata = {
      &davinci_sffsdr_nandflash_device,
};

static struct davinci_uart_config uart_config __initdata = {
      .enabled_uarts = (1 << 0),
};

static void __init davinci_sffsdr_map_io(void)
{
      dm644x_init();
}

static __init void davinci_sffsdr_init(void)
{
      struct davinci_soc_info *soc_info = &davinci_soc_info;

      platform_add_devices(davinci_sffsdr_devices,
                       ARRAY_SIZE(davinci_sffsdr_devices));
      sffsdr_init_i2c();
      davinci_serial_init(&uart_config);
      soc_info->emac_pdata->phy_id = SFFSDR_PHY_ID;
      davinci_setup_usb(0, 0); /* We support only peripheral mode. */

      /* mux VLYNQ pins */
      davinci_cfg_reg(DM644X_VLYNQEN);
      davinci_cfg_reg(DM644X_VLYNQWD);
}

MACHINE_START(SFFSDR, "Lyrtech SFFSDR")
      /* Maintainer: Hugo Villeneuve hugo.villeneuve@lyrtech.com */
      .boot_params  = (DAVINCI_DDR_BASE + 0x100),
      .map_io           = davinci_sffsdr_map_io,
      .init_irq     = davinci_irq_init,
      .timer            = &davinci_timer,
      .init_machine = davinci_sffsdr_init,
MACHINE_END

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