arch/arm/mach-davinci/board-da850-evm.c

   1 /*
   2  * TI DA850/OMAP-L138 EVM board
   3  *
   4  * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
   5  *
   6  * Derived from: arch/arm/mach-davinci/board-da830-evm.c
   7  * Original Copyrights follow:
   8  *
   9  * 2007, 2009 (c) MontaVista Software, Inc. This file is licensed under
  10  * the terms of the GNU General Public License version 2. This program
  11  * is licensed "as is" without any warranty of any kind, whether express
  12  * or implied.
  13  */
  14 #include <linux/kernel.h>
  15 #include <linux/module.h>
  16 #include <linux/init.h>
  17 #include <linux/console.h>
  18 #include <linux/i2c.h>
  19 #include <linux/i2c/at24.h>
  20 #include <linux/gpio.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/mtd/mtd.h>
  23 #include <linux/mtd/nand.h>
  24 #include <linux/mtd/partitions.h>
  25 #include <linux/mtd/physmap.h>
  26
  27 #include <asm/mach-types.h>
  28 #include <asm/mach/arch.h>
  29
  30 #include <mach/common.h>
  31 #include <mach/irqs.h>
  32 #include <mach/cp_intc.h>
  33 #include <mach/da8xx.h>
  34 #include <mach/nand.h>
  35
  36 #define DA850_EVM_PHY_MASK              0x1
  37 #define DA850_EVM_MDIO_FREQUENCY        2200000 /* PHY bus frequency */
  38
  39 #define DA850_LCD_BL_PIN                GPIO_TO_PIN(2, 15)
  40 #define DA850_LCD_PWR_PIN               GPIO_TO_PIN(8, 10)
  41
  42 #define DA850_MMCSD_CD_PIN              GPIO_TO_PIN(4, 0)
  43 #define DA850_MMCSD_WP_PIN              GPIO_TO_PIN(4, 1)
  44
  45 static struct mtd_partition da850_evm_norflash_partition[] = {
  46         {
  47                 .name           = "NOR filesystem",
  48                 .offset         = 0,
  49                 .size           = MTDPART_SIZ_FULL,
  50                 .mask_flags     = 0,
  51         },
  52 };
  53
  54 static struct physmap_flash_data da850_evm_norflash_data = {
  55         .width          = 2,
  56         .parts          = da850_evm_norflash_partition,
  57         .nr_parts       = ARRAY_SIZE(da850_evm_norflash_partition),
  58 };
  59
  60 static struct resource da850_evm_norflash_resource[] = {
  61         {
  62                 .start  = DA8XX_AEMIF_CS2_BASE,
  63                 .end    = DA8XX_AEMIF_CS2_BASE + SZ_32M - 1,
  64                 .flags  = IORESOURCE_MEM,
  65         },
  66 };
  67
  68 static struct platform_device da850_evm_norflash_device = {
  69         .name           = "physmap-flash",
  70         .id             = 0,
  71         .dev            = {
  72                 .platform_data  = &da850_evm_norflash_data,
  73         },
  74         .num_resources  = 1,
  75         .resource       = da850_evm_norflash_resource,
  76 };
  77
  78 /* DA850/OMAP-L138 EVM includes a 512 MByte large-page NAND flash
  79  * (128K blocks). It may be used instead of the (default) SPI flash
  80  * to boot, using TI's tools to install the secondary boot loader
  81  * (UBL) and U-Boot.
  82  */
  83 struct mtd_partition da850_evm_nandflash_partition[] = {
  84         {
  85                 .name           = "u-boot env",
  86                 .offset         = 0,
  87                 .size           = SZ_128K,
  88                 .mask_flags     = MTD_WRITEABLE,
  89          },
  90         {
  91                 .name           = "UBL",
  92                 .offset         = MTDPART_OFS_APPEND,
  93                 .size           = SZ_128K,
  94                 .mask_flags     = MTD_WRITEABLE,
  95         },
  96         {
  97                 .name           = "u-boot",
  98                 .offset         = MTDPART_OFS_APPEND,
  99                 .size           = 4 * SZ_128K,
 100                 .mask_flags     = MTD_WRITEABLE,
 101         },
 102         {
 103                 .name           = "kernel",
 104                 .offset         = 0x200000,
 105                 .size           = SZ_2M,
 106                 .mask_flags     = 0,
 107         },
 108         {
 109                 .name           = "filesystem",
 110                 .offset         = MTDPART_OFS_APPEND,
 111                 .size           = MTDPART_SIZ_FULL,
 112                 .mask_flags     = 0,
 113         },
 114 };
 115
 116 static struct davinci_nand_pdata da850_evm_nandflash_data = {
 117         .parts          = da850_evm_nandflash_partition,
 118         .nr_parts       = ARRAY_SIZE(da850_evm_nandflash_partition),
 119         .ecc_mode       = NAND_ECC_HW,
 120         .options        = NAND_USE_FLASH_BBT,
 121 };
 122
 123 static struct resource da850_evm_nandflash_resource[] = {
 124         {
 125                 .start  = DA8XX_AEMIF_CS3_BASE,
 126                 .end    = DA8XX_AEMIF_CS3_BASE + SZ_512K + 2 * SZ_1K - 1,
 127                 .flags  = IORESOURCE_MEM,
 128         },
 129         {
 130                 .start  = DA8XX_AEMIF_CTL_BASE,
 131                 .end    = DA8XX_AEMIF_CTL_BASE + SZ_32K - 1,
 132                 .flags  = IORESOURCE_MEM,
 133         },
 134 };
 135
 136 static struct platform_device da850_evm_nandflash_device = {
 137         .name           = "davinci_nand",
 138         .id             = 1,
 139         .dev            = {
 140                 .platform_data  = &da850_evm_nandflash_data,
 141         },
 142         .num_resources  = ARRAY_SIZE(da850_evm_nandflash_resource),
 143         .resource       = da850_evm_nandflash_resource,
 144 };
 145
 146 static struct davinci_i2c_platform_data da850_evm_i2c_0_pdata = {
 147         .bus_freq       = 100,  /* kHz */
 148         .bus_delay      = 0,    /* usec */
 149 };
 150
 151 static struct davinci_uart_config da850_evm_uart_config __initdata = {
 152         .enabled_uarts = 0x7,
 153 };
 154
 155 static struct platform_device *da850_evm_devices[] __initdata = {
 156         &da850_evm_nandflash_device,
 157         &da850_evm_norflash_device,
 158 };
 159
 160 /* davinci da850 evm audio machine driver */
 161 static u8 da850_iis_serializer_direction[] = {
 162         INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,
 163         INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,
 164         INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,  TX_MODE,
 165         RX_MODE,        INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,
 166 };
 167
 168 static struct snd_platform_data da850_evm_snd_data = {
 169         .tx_dma_offset  = 0x2000,
 170         .rx_dma_offset  = 0x2000,
 171         .op_mode        = DAVINCI_MCASP_IIS_MODE,
 172         .num_serializer = ARRAY_SIZE(da850_iis_serializer_direction),
 173         .tdm_slots      = 2,
 174         .serial_dir     = da850_iis_serializer_direction,
 175         .eventq_no      = EVENTQ_1,
 176         .version        = MCASP_VERSION_2,
 177         .txnumevt       = 1,
 178         .rxnumevt       = 1,
 179 };
 180
 181 static int da850_evm_mmc_get_ro(int index)
 182 {
 183         return gpio_get_value(DA850_MMCSD_WP_PIN);
 184 }
 185
 186 static int da850_evm_mmc_get_cd(int index)
 187 {
 188         return !gpio_get_value(DA850_MMCSD_CD_PIN);
 189 }
 190
 191 static struct davinci_mmc_config da850_mmc_config = {
 192         .get_ro         = da850_evm_mmc_get_ro,
 193         .get_cd         = da850_evm_mmc_get_cd,
 194         .wires          = 4,
 195         .version        = MMC_CTLR_VERSION_2,
 196 };
 197
 198 static int da850_lcd_hw_init(void)
 199 {
 200         int status;
 201
 202         status = gpio_request(DA850_LCD_BL_PIN, "lcd bl\n");
 203         if (status < 0)
 204                 return status;
 205
 206         status = gpio_request(DA850_LCD_PWR_PIN, "lcd pwr\n");
 207         if (status < 0) {
 208                 gpio_free(DA850_LCD_BL_PIN);
 209                 return status;
 210         }
 211
 212         gpio_direction_output(DA850_LCD_BL_PIN, 0);
 213         gpio_direction_output(DA850_LCD_PWR_PIN, 0);
 214
 215         /* disable lcd backlight */
 216         gpio_set_value(DA850_LCD_BL_PIN, 0);
 217
 218         /* disable lcd power */
 219         gpio_set_value(DA850_LCD_PWR_PIN, 0);
 220
 221         /* enable lcd power */
 222         gpio_set_value(DA850_LCD_PWR_PIN, 1);
 223
 224         /* enable lcd backlight */
 225         gpio_set_value(DA850_LCD_BL_PIN, 1);
 226
 227         return 0;
 228 }
 229
 230 #define DA8XX_AEMIF_CE2CFG_OFFSET       0x10
 231 #define DA8XX_AEMIF_ASIZE_16BIT         0x1
 232
 233 static void __init da850_evm_init_nor(void)
 234 {
 235         void __iomem *aemif_addr;
 236
 237         aemif_addr = ioremap(DA8XX_AEMIF_CTL_BASE, SZ_32K);
 238
 239         /* Configure data bus width of CS2 to 16 bit */
 240         writel(readl(aemif_addr + DA8XX_AEMIF_CE2CFG_OFFSET) |
 241                 DA8XX_AEMIF_ASIZE_16BIT,
 242                 aemif_addr + DA8XX_AEMIF_CE2CFG_OFFSET);
 243
 244         iounmap(aemif_addr);
 245 }
 246
 247 #if defined(CONFIG_MTD_PHYSMAP) || \
 248     defined(CONFIG_MTD_PHYSMAP_MODULE)
 249 #define HAS_NOR 1
 250 #else
 251 #define HAS_NOR 0
 252 #endif
 253
 254 #if defined(CONFIG_MMC_DAVINCI) || \
 255     defined(CONFIG_MMC_DAVINCI_MODULE)
 256 #define HAS_MMC 1
 257 #else
 258 #define HAS_MMC 0
 259 #endif
 260
 261 static __init void da850_evm_init(void)
 262 {
 263         struct davinci_soc_info *soc_info = &davinci_soc_info;
 264         int ret;
 265
 266         ret = da8xx_pinmux_setup(da850_nand_pins);
 267         if (ret)
 268                 pr_warning("da850_evm_init: nand mux setup failed: %d\n",
 269                                 ret);
 270
 271         ret = da8xx_pinmux_setup(da850_nor_pins);
 272         if (ret)
 273                 pr_warning("da850_evm_init: nor mux setup failed: %d\n",
 274                                 ret);
 275
 276         da850_evm_init_nor();
 277
 278         platform_add_devices(da850_evm_devices,
 279                                 ARRAY_SIZE(da850_evm_devices));
 280
 281         ret = da8xx_register_edma();
 282         if (ret)
 283                 pr_warning("da850_evm_init: edma registration failed: %d\n",
 284                                 ret);
 285
 286         ret = da8xx_pinmux_setup(da850_i2c0_pins);
 287         if (ret)
 288                 pr_warning("da850_evm_init: i2c0 mux setup failed: %d\n",
 289                                 ret);
 290
 291         ret = da8xx_register_i2c(0, &da850_evm_i2c_0_pdata);
 292         if (ret)
 293                 pr_warning("da850_evm_init: i2c0 registration failed: %d\n",
 294                                 ret);
 295
 296         soc_info->emac_pdata->phy_mask = DA850_EVM_PHY_MASK;
 297         soc_info->emac_pdata->mdio_max_freq = DA850_EVM_MDIO_FREQUENCY;
 298         soc_info->emac_pdata->rmii_en = 0;
 299
 300         ret = da8xx_pinmux_setup(da850_cpgmac_pins);
 301         if (ret)
 302                 pr_warning("da850_evm_init: cpgmac mux setup failed: %d\n",
 303                                 ret);
 304
 305         ret = da8xx_register_emac();
 306         if (ret)
 307                 pr_warning("da850_evm_init: emac registration failed: %d\n",
 308                                 ret);
 309
 310         ret = da8xx_register_watchdog();
 311         if (ret)
 312                 pr_warning("da830_evm_init: watchdog registration failed: %d\n",
 313                                 ret);
 314
 315         if (HAS_MMC) {
 316                 if (HAS_NOR)
 317                         pr_warning("WARNING: both NOR Flash and MMC/SD are "
 318                                 "enabled, but they share AEMIF pins.\n"
 319                                 "\tDisable one of them.\n");
 320
 321                 ret = da8xx_pinmux_setup(da850_mmcsd0_pins);
 322                 if (ret)
 323                         pr_warning("da850_evm_init: mmcsd0 mux setup failed:"
 324                                         " %d\n", ret);
 325
 326                 ret = gpio_request(DA850_MMCSD_CD_PIN, "MMC CD\n");
 327                 if (ret)
 328                         pr_warning("da850_evm_init: can not open GPIO %d\n",
 329                                         DA850_MMCSD_CD_PIN);
 330                 gpio_direction_input(DA850_MMCSD_CD_PIN);
 331
 332                 ret = gpio_request(DA850_MMCSD_WP_PIN, "MMC WP\n");
 333                 if (ret)
 334                         pr_warning("da850_evm_init: can not open GPIO %d\n",
 335                                         DA850_MMCSD_WP_PIN);
 336                 gpio_direction_input(DA850_MMCSD_WP_PIN);
 337
 338                 ret = da8xx_register_mmcsd0(&da850_mmc_config);
 339                 if (ret)
 340                         pr_warning("da850_evm_init: mmcsd0 registration failed:"
 341                                         " %d\n", ret);
 342         }
 343
 344         davinci_serial_init(&da850_evm_uart_config);
 345
 346         /*
 347          * shut down uart 0 and 1; they are not used on the board and
 348          * accessing them causes endless "too much work in irq53" messages
 349          * with arago fs
 350          */
 351         __raw_writel(0, IO_ADDRESS(DA8XX_UART1_BASE) + 0x30);
 352         __raw_writel(0, IO_ADDRESS(DA8XX_UART0_BASE) + 0x30);
 353
 354         ret = da8xx_pinmux_setup(da850_mcasp_pins);
 355         if (ret)
 356                 pr_warning("da850_evm_init: mcasp mux setup failed: %d\n",
 357                                 ret);
 358
 359         da8xx_init_mcasp(0, &da850_evm_snd_data);
 360
 361         ret = da8xx_pinmux_setup(da850_lcdcntl_pins);
 362         if (ret)
 363                 pr_warning("da850_evm_init: lcdcntl mux setup failed: %d\n",
 364                                 ret);
 365
 366         ret = da850_lcd_hw_init();
 367         if (ret)
 368                 pr_warning("da850_evm_init: lcd initialization failed: %d\n",
 369                                 ret);
 370
 371         ret = da8xx_register_lcdc();
 372         if (ret)
 373                 pr_warning("da850_evm_init: lcdc registration failed: %d\n",
 374                                 ret);
 375 }
 376
 377 #ifdef CONFIG_SERIAL_8250_CONSOLE
 378 static int __init da850_evm_console_init(void)
 379 {
 380         return add_preferred_console("ttyS", 2, "115200");
 381 }
 382 console_initcall(da850_evm_console_init);
 383 #endif
 384
 385 static __init void da850_evm_irq_init(void)
 386 {
 387         struct davinci_soc_info *soc_info = &davinci_soc_info;
 388
 389         cp_intc_init((void __iomem *)DA8XX_CP_INTC_VIRT, DA850_N_CP_INTC_IRQ,
 390                         soc_info->intc_irq_prios);
 391 }
 392
 393 static void __init da850_evm_map_io(void)
 394 {
 395         da850_init();
 396 }
 397
 398 MACHINE_START(DAVINCI_DA850_EVM, "DaVinci DA850/OMAP-L138 EVM")
 399         .phys_io        = IO_PHYS,
 400         .io_pg_offst    = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
 401         .boot_params    = (DA8XX_DDR_BASE + 0x100),
 402         .map_io         = da850_evm_map_io,
 403         .init_irq       = da850_evm_irq_init,
 404         .timer          = &davinci_timer,
 405         .init_machine   = da850_evm_init,
 406 MACHINE_END