arch/arm/mach-omap2/board-overo.c

   1 /*
   2  * board-overo.c (Gumstix Overo)
   3  *
   4  * Initial code: Steve Sakoman <steve@sakoman.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * version 2 as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * 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., 51 Franklin St, Fifth Floor, Boston, MA
  18  * 02110-1301 USA
  19  *
  20  */
  21
  22 #include <linux/clk.h>
  23 #include <linux/delay.h>
  24 #include <linux/err.h>
  25 #include <linux/init.h>
  26 #include <linux/io.h>
  27 #include <linux/kernel.h>
  28 #include <linux/platform_device.h>
  29
  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 #include <asm/mach/map.h>
  38
  39 #include <mach/board-overo.h>
  40 #include <mach/board.h>
  41 #include <mach/common.h>
  42 #include <mach/gpio.h>
  43 #include <mach/gpmc.h>
  44 #include <mach/hardware.h>
  45 #include <mach/hsmmc.h>
  46 #include <mach/nand.h>
  47 #include <mach/usb-ehci.h>
  48 #include <mach/usb-musb.h>
  49
  50 #include "sdram-micron-mt46h32m32lf-6.h"
  51 #include "twl4030-generic-scripts.h"
  52
  53 #define NAND_BLOCK_SIZE SZ_128K
  54 #define GPMC_CS0_BASE  0x60
  55 #define GPMC_CS_SIZE   0x30
  56
  57 static struct mtd_partition overo_nand_partitions[] = {
  58         {
  59                 .name           = "xloader",
  60                 .offset         = 0,                    /* Offset = 0x00000 */
  61                 .size           = 4 * NAND_BLOCK_SIZE,
  62                 .mask_flags     = MTD_WRITEABLE
  63         },
  64         {
  65                 .name           = "uboot",
  66                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
  67                 .size           = 14 * NAND_BLOCK_SIZE,
  68         },
  69         {
  70                 .name           = "uboot environment",
  71                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x240000 */
  72                 .size           = 2 * NAND_BLOCK_SIZE,
  73         },
  74         {
  75                 .name           = "linux",
  76                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
  77                 .size           = 32 * NAND_BLOCK_SIZE,
  78         },
  79         {
  80                 .name           = "rootfs",
  81                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
  82                 .size           = MTDPART_SIZ_FULL,
  83         },
  84 };
  85
  86 static struct omap_nand_platform_data overo_nand_data = {
  87         .parts = overo_nand_partitions,
  88         .nr_parts = ARRAY_SIZE(overo_nand_partitions),
  89         .dma_channel = -1,      /* disable DMA in OMAP NAND driver */
  90 };
  91
  92 static struct resource overo_nand_resource = {
  93         .flags          = IORESOURCE_MEM,
  94 };
  95
  96 static struct platform_device overo_nand_device = {
  97         .name           = "omap2-nand",
  98         .id             = -1,
  99         .dev            = {
 100                 .platform_data  = &overo_nand_data,
 101         },
 102         .num_resources  = 1,
 103         .resource       = &overo_nand_resource,
 104 };
 105
 106
 107 static void __init overo_flash_init(void)
 108 {
 109         u8 cs = 0;
 110         u8 nandcs = GPMC_CS_NUM + 1;
 111
 112         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 113
 114         /* find out the chip-select on which NAND exists */
 115         while (cs < GPMC_CS_NUM) {
 116                 u32 ret = 0;
 117                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 118
 119                 if ((ret & 0xC00) == 0x800) {
 120                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 121                         if (nandcs > GPMC_CS_NUM)
 122                                 nandcs = cs;
 123                 }
 124                 cs++;
 125         }
 126
 127         if (nandcs > GPMC_CS_NUM) {
 128                 printk(KERN_INFO "NAND: Unable to find configuration "
 129                                  "in GPMC\n ");
 130                 return;
 131         }
 132
 133         if (nandcs < GPMC_CS_NUM) {
 134                 overo_nand_data.cs = nandcs;
 135                 overo_nand_data.gpmc_cs_baseaddr = (void *)
 136                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 137                 overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 138
 139                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 140                 if (platform_device_register(&overo_nand_device) < 0)
 141                         printk(KERN_ERR "Unable to register NAND device\n");
 142         }
 143 }
 144 static struct omap_uart_config overo_uart_config __initdata = {
 145         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 146 };
 147 static struct twl4030_gpio_platform_data overo_gpio_data = {
 148         .gpio_base      = OMAP_MAX_GPIO_LINES,
 149         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 150         .irq_end        = TWL4030_GPIO_IRQ_END,
 151 };
 152
 153 static struct twl4030_usb_data overo_usb_data = {
 154         .usb_mode       = T2_USB_MODE_ULPI,
 155 };
 156
 157 static struct twl4030_platform_data overo_twldata = {
 158         .irq_base       = TWL4030_IRQ_BASE,
 159         .irq_end        = TWL4030_IRQ_END,
 160         .gpio           = &overo_gpio_data,
 161         .usb            = &overo_usb_data,
 162         .power          = &generic3430_t2scripts_data,
 163 };
 164
 165 static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
 166         {
 167                 I2C_BOARD_INFO("twl4030", 0x48),
 168                 .flags = I2C_CLIENT_WAKE,
 169                 .irq = INT_34XX_SYS_NIRQ,
 170                 .platform_data = &overo_twldata,
 171         },
 172 };
 173
 174 static int __init overo_i2c_init(void)
 175 {
 176         omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
 177                         ARRAY_SIZE(overo_i2c_boardinfo));
 178         /* i2c2 pins are used for gpio */
 179         omap_register_i2c_bus(3, 400, NULL, 0);
 180         return 0;
 181 }
 182
 183 static void __init overo_init_irq(void)
 184 {
 185         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 186         omap_init_irq();
 187         omap_gpio_init();
 188 }
 189
 190 static struct platform_device overo_lcd_device = {
 191         .name           = "overo_lcd",
 192         .id             = -1,
 193 };
 194
 195 static struct omap_lcd_config overo_lcd_config __initdata = {
 196         .ctrl_name      = "internal",
 197 };
 198
 199 static struct omap_board_config_kernel overo_config[] __initdata = {
 200         { OMAP_TAG_UART,        &overo_uart_config },
 201         { OMAP_TAG_LCD,         &overo_lcd_config },
 202 };
 203
 204 static struct platform_device *overo_devices[] __initdata = {
 205         &overo_lcd_device,
 206 };
 207
 208 static void __init overo_init(void)
 209 {
 210         overo_i2c_init();
 211         platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
 212         omap_board_config = overo_config;
 213         omap_board_config_size = ARRAY_SIZE(overo_config);
 214         omap_serial_init();
 215         hsmmc_init();
 216         usb_musb_init();
 217         usb_ehci_init();
 218         overo_flash_init();
 219
 220         if ((gpio_request(OVERO_GPIO_W2W_NRESET,
 221                           "OVERO_GPIO_W2W_NRESET") == 0) &&
 222             (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
 223                 gpio_export(OVERO_GPIO_W2W_NRESET, 0);
 224                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
 225                 udelay(10);
 226                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
 227         } else {
 228                 printk(KERN_ERR "could not obtain gpio for "
 229                                         "OVERO_GPIO_W2W_NRESET\n");
 230         }
 231
 232         if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
 233             (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
 234                 gpio_export(OVERO_GPIO_BT_XGATE, 0);
 235         else
 236                 printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
 237
 238         if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
 239             (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
 240                 gpio_export(OVERO_GPIO_BT_NRESET, 0);
 241                 gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
 242                 mdelay(6);
 243                 gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
 244         } else {
 245                 printk(KERN_ERR "could not obtain gpio for "
 246                                         "OVERO_GPIO_BT_NRESET\n");
 247         }
 248
 249         if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
 250             (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
 251                 gpio_export(OVERO_GPIO_USBH_CPEN, 0);
 252         else
 253                 printk(KERN_ERR "could not obtain gpio for "
 254                                         "OVERO_GPIO_USBH_CPEN\n");
 255
 256         if ((gpio_request(OVERO_GPIO_USBH_NRESET,
 257                           "OVERO_GPIO_USBH_NRESET") == 0) &&
 258             (gpio_direction_output(OVERO_GPIO_USBH_NRESET, 1) == 0))
 259                 gpio_export(OVERO_GPIO_USBH_NRESET, 0);
 260         else
 261                 printk(KERN_ERR "could not obtain gpio for "
 262                                         "OVERO_GPIO_USBH_NRESET\n");
 263 }
 264
 265 static void __init overo_map_io(void)
 266 {
 267         omap2_set_globals_343x();
 268         omap2_map_common_io();
 269 }
 270
 271 MACHINE_START(OVERO, "Gumstix Overo")
 272         .phys_io        = 0x48000000,
 273         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 274         .boot_params    = 0x80000100,
 275         .map_io         = overo_map_io,
 276         .init_irq       = overo_init_irq,
 277         .init_machine   = overo_init,
 278         .timer          = &omap_timer,
 279 MACHINE_END