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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * DM355 leopard board support
   4  *
   5  * Based on board-dm355-evm.c
   6  */
   7 #include <linux/kernel.h>
   8 #include <linux/init.h>
   9 #include <linux/err.h>
  10 #include <linux/platform_device.h>
  11 #include <linux/mtd/mtd.h>
  12 #include <linux/mtd/partitions.h>
  13 #include <linux/mtd/rawnand.h>
  14 #include <linux/i2c.h>
  15 #include <linux/gpio.h>
  16 #include <linux/clk.h>
  17 #include <linux/spi/spi.h>
  18 #include <linux/spi/eeprom.h>
  19 #include <linux/platform_data/i2c-davinci.h>
  20 #include <linux/platform_data/mmc-davinci.h>
  21 #include <linux/platform_data/mtd-davinci.h>
  22 #include <linux/platform_data/usb-davinci.h>
  23
  24 #include <asm/mach-types.h>
  25 #include <asm/mach/arch.h>
  26
  27 #include "common.h"
  28 #include "serial.h"
  29 #include "davinci.h"
  30
  31 /* NOTE:  this is geared for the standard config, with a socketed
  32  * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors.  If you
  33  * swap chips, maybe with a different block size, partitioning may
  34  * need to be changed.
  35  */
  36 #define NAND_BLOCK_SIZE         SZ_128K
  37
  38 static struct mtd_partition davinci_nand_partitions[] = {
  39         {
  40                 /* UBL (a few copies) plus U-Boot */
  41                 .name           = "bootloader",
  42                 .offset         = 0,
  43                 .size           = 15 * NAND_BLOCK_SIZE,
  44                 .mask_flags     = MTD_WRITEABLE, /* force read-only */
  45         }, {
  46                 /* U-Boot environment */
  47                 .name           = "params",
  48                 .offset         = MTDPART_OFS_APPEND,
  49                 .size           = 1 * NAND_BLOCK_SIZE,
  50                 .mask_flags     = 0,
  51         }, {
  52                 .name           = "kernel",
  53                 .offset         = MTDPART_OFS_APPEND,
  54                 .size           = SZ_4M,
  55                 .mask_flags     = 0,
  56         }, {
  57                 .name           = "filesystem1",
  58                 .offset         = MTDPART_OFS_APPEND,
  59                 .size           = SZ_512M,
  60                 .mask_flags     = 0,
  61         }, {
  62                 .name           = "filesystem2",
  63                 .offset         = MTDPART_OFS_APPEND,
  64                 .size           = MTDPART_SIZ_FULL,
  65                 .mask_flags     = 0,
  66         }
  67         /* two blocks with bad block table (and mirror) at the end */
  68 };
  69
  70 static struct davinci_nand_pdata davinci_nand_data = {
  71         .core_chipsel           = 0,
  72         .mask_chipsel           = BIT(14),
  73         .parts                  = davinci_nand_partitions,
  74         .nr_parts               = ARRAY_SIZE(davinci_nand_partitions),
  75         .engine_type            = NAND_ECC_ENGINE_TYPE_ON_HOST,
  76         .ecc_placement          = NAND_ECC_PLACEMENT_INTERLEAVED,
  77         .ecc_bits               = 4,
  78         .bbt_options            = NAND_BBT_USE_FLASH,
  79 };
  80
  81 static struct resource davinci_nand_resources[] = {
  82         {
  83                 .start          = DM355_ASYNC_EMIF_DATA_CE0_BASE,
  84                 .end            = DM355_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
  85                 .flags          = IORESOURCE_MEM,
  86         }, {
  87                 .start          = DM355_ASYNC_EMIF_CONTROL_BASE,
  88                 .end            = DM355_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
  89                 .flags          = IORESOURCE_MEM,
  90         },
  91 };
  92
  93 static struct platform_device davinci_nand_device = {
  94         .name                   = "davinci_nand",
  95         .id                     = 0,
  96
  97         .num_resources          = ARRAY_SIZE(davinci_nand_resources),
  98         .resource               = davinci_nand_resources,
  99
 100         .dev                    = {
 101                 .platform_data  = &davinci_nand_data,
 102         },
 103 };
 104
 105 static struct davinci_i2c_platform_data i2c_pdata = {
 106         .bus_freq       = 400   /* kHz */,
 107         .bus_delay      = 0     /* usec */,
 108 };
 109
 110 static int leopard_mmc_gpio = -EINVAL;
 111
 112 static void dm355leopard_mmcsd_gpios(unsigned gpio)
 113 {
 114         gpio_request(gpio + 0, "mmc0_ro");
 115         gpio_request(gpio + 1, "mmc0_cd");
 116         gpio_request(gpio + 2, "mmc1_ro");
 117         gpio_request(gpio + 3, "mmc1_cd");
 118
 119         /* we "know" these are input-only so we don't
 120          * need to call gpio_direction_input()
 121          */
 122
 123         leopard_mmc_gpio = gpio;
 124 }
 125
 126 static struct i2c_board_info dm355leopard_i2c_info[] = {
 127         { I2C_BOARD_INFO("dm355leopard_msp", 0x25),
 128                 .platform_data = dm355leopard_mmcsd_gpios,
 129                 /* plus irq */ },
 130         /* { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }, */
 131         /* { I2C_BOARD_INFO("tvp5146", 0x5d), }, */
 132 };
 133
 134 static void __init leopard_init_i2c(void)
 135 {
 136         davinci_init_i2c(&i2c_pdata);
 137
 138         gpio_request(5, "dm355leopard_msp");
 139         gpio_direction_input(5);
 140         dm355leopard_i2c_info[0].irq = gpio_to_irq(5);
 141
 142         i2c_register_board_info(1, dm355leopard_i2c_info,
 143                         ARRAY_SIZE(dm355leopard_i2c_info));
 144 }
 145
 146 static struct resource dm355leopard_dm9000_rsrc[] = {
 147         {
 148                 /* addr */
 149                 .start  = 0x04000000,
 150                 .end    = 0x04000001,
 151                 .flags  = IORESOURCE_MEM,
 152         }, {
 153                 /* data */
 154                 .start  = 0x04000016,
 155                 .end    = 0x04000017,
 156                 .flags  = IORESOURCE_MEM,
 157         }, {
 158                 .flags  = IORESOURCE_IRQ
 159                         | IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */,
 160         },
 161 };
 162
 163 static struct platform_device dm355leopard_dm9000 = {
 164         .name           = "dm9000",
 165         .id             = -1,
 166         .resource       = dm355leopard_dm9000_rsrc,
 167         .num_resources  = ARRAY_SIZE(dm355leopard_dm9000_rsrc),
 168 };
 169
 170 static struct platform_device *davinci_leopard_devices[] __initdata = {
 171         &dm355leopard_dm9000,
 172         &davinci_nand_device,
 173 };
 174
 175 static void __init dm355_leopard_map_io(void)
 176 {
 177         dm355_init();
 178 }
 179
 180 static int dm355leopard_mmc_get_cd(int module)
 181 {
 182         if (!gpio_is_valid(leopard_mmc_gpio))
 183                 return -ENXIO;
 184         /* low == card present */
 185         return !gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 1);
 186 }
 187
 188 static int dm355leopard_mmc_get_ro(int module)
 189 {
 190         if (!gpio_is_valid(leopard_mmc_gpio))
 191                 return -ENXIO;
 192         /* high == card's write protect switch active */
 193         return gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 0);
 194 }
 195
 196 static struct davinci_mmc_config dm355leopard_mmc_config = {
 197         .get_cd         = dm355leopard_mmc_get_cd,
 198         .get_ro         = dm355leopard_mmc_get_ro,
 199         .wires          = 4,
 200         .max_freq       = 50000000,
 201         .caps           = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
 202 };
 203
 204 /* Don't connect anything to J10 unless you're only using USB host
 205  * mode *and* have to do so with some kind of gender-bender.  If
 206  * you have proper Mini-B or Mini-A cables (or Mini-A adapters)
 207  * the ID pin won't need any help.
 208  */
 209 #define USB_ID_VALUE    1       /* ID pulled low */
 210
 211 static struct spi_eeprom at25640a = {
 212         .byte_len       = SZ_64K / 8,
 213         .name           = "at25640a",
 214         .page_size      = 32,
 215         .flags          = EE_ADDR2,
 216 };
 217
 218 static const struct spi_board_info dm355_leopard_spi_info[] __initconst = {
 219         {
 220                 .modalias       = "at25",
 221                 .platform_data  = &at25640a,
 222                 .max_speed_hz   = 10 * 1000 * 1000,     /* at 3v3 */
 223                 .bus_num        = 0,
 224                 .chip_select    = 0,
 225                 .mode           = SPI_MODE_0,
 226         },
 227 };
 228
 229 static __init void dm355_leopard_init(void)
 230 {
 231         struct clk *aemif;
 232         int ret;
 233
 234         dm355_register_clocks();
 235
 236         ret = dm355_gpio_register();
 237         if (ret)
 238                 pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
 239
 240         gpio_request(9, "dm9000");
 241         gpio_direction_input(9);
 242         dm355leopard_dm9000_rsrc[2].start = gpio_to_irq(9);
 243
 244         aemif = clk_get(&dm355leopard_dm9000.dev, "aemif");
 245         if (!WARN(IS_ERR(aemif), "unable to get AEMIF clock\n"))
 246                 clk_prepare_enable(aemif);
 247
 248         platform_add_devices(davinci_leopard_devices,
 249                              ARRAY_SIZE(davinci_leopard_devices));
 250         leopard_init_i2c();
 251         davinci_serial_init(dm355_serial_device);
 252
 253         /* NOTE:  NAND flash timings set by the UBL are slower than
 254          * needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204
 255          * but could be 0x0400008c for about 25% faster page reads.
 256          */
 257
 258         gpio_request(2, "usb_id_toggle");
 259         gpio_direction_output(2, USB_ID_VALUE);
 260         /* irlml6401 switches over 1A in under 8 msec */
 261         davinci_setup_usb(1000, 8);
 262
 263         davinci_setup_mmc(0, &dm355leopard_mmc_config);
 264         davinci_setup_mmc(1, &dm355leopard_mmc_config);
 265
 266         dm355_init_spi0(BIT(0), dm355_leopard_spi_info,
 267                         ARRAY_SIZE(dm355_leopard_spi_info));
 268 }
 269
 270 MACHINE_START(DM355_LEOPARD, "DaVinci DM355 leopard")
 271         .atag_offset  = 0x100,
 272         .map_io       = dm355_leopard_map_io,
 273         .init_irq     = dm355_init_irq,
 274         .init_time      = dm355_init_time,
 275         .init_machine = dm355_leopard_init,
 276         .init_late      = davinci_init_late,
 277         .dma_zone_size  = SZ_128M,
 278 MACHINE_END