arch/arm/mach-davinci/board-dm355-leopard.c

   1 /*
   2  * DM355 leopard board support
   3  *
   4  * Based on board-dm355-evm.c
   5  *
   6  * This file is licensed under the terms of the GNU General Public
   7  * License version 2. This program is licensed "as is" without any
   8  * warranty of any kind, whether express or implied.
   9  */
  10 #include <linux/kernel.h>
  11 #include <linux/module.h>
  12 #include <linux/init.h>
  13 #include <linux/dma-mapping.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/mtd/mtd.h>
  16 #include <linux/mtd/partitions.h>
  17 #include <linux/mtd/nand.h>
  18 #include <linux/i2c.h>
  19 #include <linux/io.h>
  20 #include <linux/gpio.h>
  21 #include <linux/clk.h>
  22 #include <linux/spi/spi.h>
  23 #include <linux/spi/eeprom.h>
  24
  25 #include <asm/setup.h>
  26 #include <asm/mach-types.h>
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach/map.h>
  29 #include <asm/mach/flash.h>
  30
  31 #include <mach/hardware.h>
  32 #include <mach/dm355.h>
  33 #include <mach/psc.h>
  34 #include <mach/common.h>
  35 #include <mach/i2c.h>
  36 #include <mach/serial.h>
  37 #include <mach/nand.h>
  38
  39 #define DAVINCI_ASYNC_EMIF_CONTROL_BASE         0x01e10000
  40 #define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE        0x02000000
  41
  42 /* NOTE:  this is geared for the standard config, with a socketed
  43  * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors.  If you
  44  * swap chips, maybe with a different block size, partitioning may
  45  * need to be changed.
  46  */
  47 #define NAND_BLOCK_SIZE         SZ_128K
  48
  49 static struct mtd_partition davinci_nand_partitions[] = {
  50         {
  51                 /* UBL (a few copies) plus U-Boot */
  52                 .name           = "bootloader",
  53                 .offset         = 0,
  54                 .size           = 15 * NAND_BLOCK_SIZE,
  55                 .mask_flags     = MTD_WRITEABLE, /* force read-only */
  56         }, {
  57                 /* U-Boot environment */
  58                 .name           = "params",
  59                 .offset         = MTDPART_OFS_APPEND,
  60                 .size           = 1 * NAND_BLOCK_SIZE,
  61                 .mask_flags     = 0,
  62         }, {
  63                 .name           = "kernel",
  64                 .offset         = MTDPART_OFS_APPEND,
  65                 .size           = SZ_4M,
  66                 .mask_flags     = 0,
  67         }, {
  68                 .name           = "filesystem1",
  69                 .offset         = MTDPART_OFS_APPEND,
  70                 .size           = SZ_512M,
  71                 .mask_flags     = 0,
  72         }, {
  73                 .name           = "filesystem2",
  74                 .offset         = MTDPART_OFS_APPEND,
  75                 .size           = MTDPART_SIZ_FULL,
  76                 .mask_flags     = 0,
  77         }
  78         /* two blocks with bad block table (and mirror) at the end */
  79 };
  80
  81 static struct davinci_nand_pdata davinci_nand_data = {
  82         .mask_chipsel           = BIT(14),
  83         .parts                  = davinci_nand_partitions,
  84         .nr_parts               = ARRAY_SIZE(davinci_nand_partitions),
  85         .ecc_mode               = NAND_ECC_HW_SYNDROME,
  86         .options                = NAND_USE_FLASH_BBT,
  87 };
  88
  89 static struct resource davinci_nand_resources[] = {
  90         {
  91                 .start          = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE,
  92                 .end            = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
  93                 .flags          = IORESOURCE_MEM,
  94         }, {
  95                 .start          = DAVINCI_ASYNC_EMIF_CONTROL_BASE,
  96                 .end            = DAVINCI_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
  97                 .flags          = IORESOURCE_MEM,
  98         },
  99 };
 100
 101 static struct platform_device davinci_nand_device = {
 102         .name                   = "davinci_nand",
 103         .id                     = 0,
 104
 105         .num_resources          = ARRAY_SIZE(davinci_nand_resources),
 106         .resource               = davinci_nand_resources,
 107
 108         .dev                    = {
 109                 .platform_data  = &davinci_nand_data,
 110         },
 111 };
 112
 113 static struct davinci_i2c_platform_data i2c_pdata = {
 114         .bus_freq       = 400   /* kHz */,
 115         .bus_delay      = 0     /* usec */,
 116 };
 117
 118 static int leopard_mmc_gpio = -EINVAL;
 119
 120 static void dm355leopard_mmcsd_gpios(unsigned gpio)
 121 {
 122         gpio_request(gpio + 0, "mmc0_ro");
 123         gpio_request(gpio + 1, "mmc0_cd");
 124         gpio_request(gpio + 2, "mmc1_ro");
 125         gpio_request(gpio + 3, "mmc1_cd");
 126
 127         /* we "know" these are input-only so we don't
 128          * need to call gpio_direction_input()
 129          */
 130
 131         leopard_mmc_gpio = gpio;
 132 }
 133
 134 static struct i2c_board_info dm355leopard_i2c_info[] = {
 135         { I2C_BOARD_INFO("dm355leopard_msp", 0x25),
 136                 .platform_data = dm355leopard_mmcsd_gpios,
 137                 /* plus irq */ },
 138         /* { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }, */
 139         /* { I2C_BOARD_INFO("tvp5146", 0x5d), }, */
 140 };
 141
 142 static void __init leopard_init_i2c(void)
 143 {
 144         davinci_init_i2c(&i2c_pdata);
 145
 146         gpio_request(5, "dm355leopard_msp");
 147         gpio_direction_input(5);
 148         dm355leopard_i2c_info[0].irq = gpio_to_irq(5);
 149
 150         i2c_register_board_info(1, dm355leopard_i2c_info,
 151                         ARRAY_SIZE(dm355leopard_i2c_info));
 152 }
 153
 154 static struct resource dm355leopard_dm9000_rsrc[] = {
 155         {
 156                 /* addr */
 157                 .start  = 0x04000000,
 158                 .end    = 0x04000001,
 159                 .flags  = IORESOURCE_MEM,
 160         }, {
 161                 /* data */
 162                 .start  = 0x04000016,
 163                 .end    = 0x04000017,
 164                 .flags  = IORESOURCE_MEM,
 165         }, {
 166                 .flags  = IORESOURCE_IRQ
 167                         | IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */,
 168         },
 169 };
 170
 171 static struct platform_device dm355leopard_dm9000 = {
 172         .name           = "dm9000",
 173         .id             = -1,
 174         .resource       = dm355leopard_dm9000_rsrc,
 175         .num_resources  = ARRAY_SIZE(dm355leopard_dm9000_rsrc),
 176 };
 177
 178 static struct platform_device *davinci_leopard_devices[] __initdata = {
 179         &dm355leopard_dm9000,
 180         &davinci_nand_device,
 181 };
 182
 183 static struct davinci_uart_config uart_config __initdata = {
 184         .enabled_uarts = (1 << 0),
 185 };
 186
 187 static void __init dm355_leopard_map_io(void)
 188 {
 189         davinci_map_common_io();
 190         dm355_init();
 191 }
 192
 193 /* Don't connect anything to J10 unless you're only using USB host
 194  * mode *and* have to do so with some kind of gender-bender.  If
 195  * you have proper Mini-B or Mini-A cables (or Mini-A adapters)
 196  * the ID pin won't need any help.
 197  */
 198 #ifdef CONFIG_USB_MUSB_PERIPHERAL
 199 #define USB_ID_VALUE    0       /* ID pulled high; *should* float */
 200 #else
 201 #define USB_ID_VALUE    1       /* ID pulled low */
 202 #endif
 203
 204 static struct spi_eeprom at25640a = {
 205         .byte_len       = SZ_64K / 8,
 206         .name           = "at25640a",
 207         .page_size      = 32,
 208         .flags          = EE_ADDR2,
 209 };
 210
 211 static struct spi_board_info dm355_leopard_spi_info[] __initconst = {
 212         {
 213                 .modalias       = "at25",
 214                 .platform_data  = &at25640a,
 215                 .max_speed_hz   = 10 * 1000 * 1000,     /* at 3v3 */
 216                 .bus_num        = 0,
 217                 .chip_select    = 0,
 218                 .mode           = SPI_MODE_0,
 219         },
 220 };
 221
 222 static __init void dm355_leopard_init(void)
 223 {
 224         struct clk *aemif;
 225
 226         gpio_request(9, "dm9000");
 227         gpio_direction_input(9);
 228         dm355leopard_dm9000_rsrc[2].start = gpio_to_irq(9);
 229
 230         aemif = clk_get(&dm355leopard_dm9000.dev, "aemif");
 231         if (IS_ERR(aemif))
 232                 WARN("%s: unable to get AEMIF clock\n", __func__);
 233         else
 234                 clk_enable(aemif);
 235
 236         platform_add_devices(davinci_leopard_devices,
 237                              ARRAY_SIZE(davinci_leopard_devices));
 238         leopard_init_i2c();
 239         davinci_serial_init(&uart_config);
 240
 241         /* NOTE:  NAND flash timings set by the UBL are slower than
 242          * needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204
 243          * but could be 0x0400008c for about 25% faster page reads.
 244          */
 245
 246         gpio_request(2, "usb_id_toggle");
 247         gpio_direction_output(2, USB_ID_VALUE);
 248         /* irlml6401 switches over 1A in under 8 msec */
 249         setup_usb(500, 8);
 250
 251         dm355_init_spi0(BIT(0), dm355_leopard_spi_info,
 252                         ARRAY_SIZE(dm355_leopard_spi_info));
 253 }
 254
 255 static __init void dm355_leopard_irq_init(void)
 256 {
 257         davinci_irq_init();
 258 }
 259
 260 MACHINE_START(DM355_LEOPARD, "DaVinci DM355 leopard")
 261         .phys_io      = IO_PHYS,
 262         .io_pg_offst  = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
 263         .boot_params  = (0x80000100),
 264         .map_io       = dm355_leopard_map_io,
 265         .init_irq     = dm355_leopard_irq_init,
 266         .timer        = &davinci_timer,
 267         .init_machine = dm355_leopard_init,
 268 MACHINE_END