release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-davinci/board-sffsdr.c

   1 /*
   2  * Lyrtech SFFSDR board support.
   3  *
   4  * Copyright (C) 2008 Philip Balister, OpenSDR <philip@opensdr.com>
   5  * Copyright (C) 2008 Lyrtech <www.lyrtech.com>
   6  *
   7  * Based on DV-EVM platform, original copyright follows:
   8  *
   9  * Copyright (C) 2007 MontaVista Software, Inc.
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24  */
  25
  26 #include <linux/init.h>
  27 #include <linux/platform_device.h>
  28 #include <linux/i2c.h>
  29 #include <linux/i2c/at24.h>
  30 #include <linux/mtd/mtd.h>
  31 #include <linux/mtd/nand.h>
  32 #include <linux/mtd/partitions.h>
  33
  34 #include <asm/mach-types.h>
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/flash.h>
  37
  38 #include <mach/dm644x.h>
  39 #include <mach/common.h>
  40 #include <mach/i2c.h>
  41 #include <mach/serial.h>
  42 #include <mach/mux.h>
  43 #include <mach/usb.h>
  44
  45 #define SFFSDR_PHY_MASK         (0x2)
  46 #define SFFSDR_MDIO_FREQUENCY   (2200000) /* PHY bus frequency */
  47
  48 static struct mtd_partition davinci_sffsdr_nandflash_partition[] = {
  49         /* U-Boot Environment: Block 0
  50          * UBL:                Block 1
  51          * U-Boot:             Blocks 6-7 (256 kb)
  52          * Integrity Kernel:   Blocks 8-31 (3 Mb)
  53          * Integrity Data:     Blocks 100-END
  54          */
  55         {
  56                 .name           = "Linux Kernel",
  57                 .offset         = 32 * SZ_128K,
  58                 .size           = 16 * SZ_128K, /* 2 Mb */
  59                 .mask_flags     = MTD_WRITEABLE, /* Force read-only */
  60         },
  61         {
  62                 .name           = "Linux ROOT",
  63                 .offset         = MTDPART_OFS_APPEND,
  64                 .size           = 256 * SZ_128K, /* 32 Mb */
  65                 .mask_flags     = 0, /* R/W */
  66         },
  67 };
  68
  69 static struct flash_platform_data davinci_sffsdr_nandflash_data = {
  70         .parts          = davinci_sffsdr_nandflash_partition,
  71         .nr_parts       = ARRAY_SIZE(davinci_sffsdr_nandflash_partition),
  72 };
  73
  74 static struct resource davinci_sffsdr_nandflash_resource[] = {
  75         {
  76                 .start          = DM644X_ASYNC_EMIF_DATA_CE0_BASE,
  77                 .end            = DM644X_ASYNC_EMIF_DATA_CE0_BASE + SZ_16M - 1,
  78                 .flags          = IORESOURCE_MEM,
  79         }, {
  80                 .start          = DM644X_ASYNC_EMIF_CONTROL_BASE,
  81                 .end            = DM644X_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
  82                 .flags          = IORESOURCE_MEM,
  83         },
  84 };
  85
  86 static struct platform_device davinci_sffsdr_nandflash_device = {
  87         .name           = "davinci_nand", /* Name of driver */
  88         .id             = 0,
  89         .dev            = {
  90                 .platform_data  = &davinci_sffsdr_nandflash_data,
  91         },
  92         .num_resources  = ARRAY_SIZE(davinci_sffsdr_nandflash_resource),
  93         .resource       = davinci_sffsdr_nandflash_resource,
  94 };
  95
  96 static struct at24_platform_data eeprom_info = {
  97         .byte_len       = (64*1024) / 8,
  98         .page_size      = 32,
  99         .flags          = AT24_FLAG_ADDR16,
 100 };
 101
 102 static struct i2c_board_info __initdata i2c_info[] =  {
 103         {
 104                 I2C_BOARD_INFO("24lc64", 0x50),
 105                 .platform_data  = &eeprom_info,
 106         },
 107         /* Other I2C devices:
 108          * MSP430,  addr 0x23 (not used)
 109          * PCA9543, addr 0x70 (setup done by U-Boot)
 110          * ADS7828, addr 0x48 (ADC for voltage monitoring.)
 111          */
 112 };
 113
 114 static struct davinci_i2c_platform_data i2c_pdata = {
 115         .bus_freq       = 20 /* kHz */,
 116         .bus_delay      = 100 /* usec */,
 117 };
 118
 119 static void __init sffsdr_init_i2c(void)
 120 {
 121         davinci_init_i2c(&i2c_pdata);
 122         i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
 123 }
 124
 125 static struct platform_device *davinci_sffsdr_devices[] __initdata = {
 126         &davinci_sffsdr_nandflash_device,
 127 };
 128
 129 static struct davinci_uart_config uart_config __initdata = {
 130         .enabled_uarts = (1 << 0),
 131 };
 132
 133 static void __init davinci_sffsdr_map_io(void)
 134 {
 135         dm644x_init();
 136 }
 137
 138 static __init void davinci_sffsdr_init(void)
 139 {
 140         struct davinci_soc_info *soc_info = &davinci_soc_info;
 141
 142         platform_add_devices(davinci_sffsdr_devices,
 143                              ARRAY_SIZE(davinci_sffsdr_devices));
 144         sffsdr_init_i2c();
 145         davinci_serial_init(&uart_config);
 146         soc_info->emac_pdata->phy_mask = SFFSDR_PHY_MASK;
 147         soc_info->emac_pdata->mdio_max_freq = SFFSDR_MDIO_FREQUENCY;
 148         davinci_setup_usb(0, 0); /* We support only peripheral mode. */
 149
 150         /* mux VLYNQ pins */
 151         davinci_cfg_reg(DM644X_VLYNQEN);
 152         davinci_cfg_reg(DM644X_VLYNQWD);
 153 }
 154
 155 MACHINE_START(SFFSDR, "Lyrtech SFFSDR")
 156         /* Maintainer: Hugo Villeneuve hugo.villeneuve@lyrtech.com */
 157         .phys_io      = IO_PHYS,
 158         .io_pg_offst  = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
 159         .boot_params  = (DAVINCI_DDR_BASE + 0x100),
 160         .map_io       = davinci_sffsdr_map_io,
 161         .init_irq     = davinci_irq_init,
 162         .timer        = &davinci_timer,
 163         .init_machine = davinci_sffsdr_init,
 164 MACHINE_END