arch/arm/mach-shmobile/board-bockw.c

   1 /*
   2  * Bock-W board support
   3  *
   4  * Copyright (C) 2013  Renesas Solutions Corp.
   5  * Copyright (C) 2013  Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; version 2 of the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  */
  20
  21 #include <linux/mfd/tmio.h>
  22 #include <linux/mmc/host.h>
  23 #include <linux/mtd/partitions.h>
  24 #include <linux/pinctrl/machine.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/regulator/fixed.h>
  27 #include <linux/regulator/machine.h>
  28 #include <linux/smsc911x.h>
  29 #include <linux/spi/spi.h>
  30 #include <linux/spi/flash.h>
  31 #include <mach/common.h>
  32 #include <mach/irqs.h>
  33 #include <mach/r8a7778.h>
  34 #include <asm/mach/arch.h>
  35
  36 /*
  37  *      CN9(Upper side) SCIF/RCAN selection
  38  *
  39  *              1,4     3,6
  40  * SW40         SCIF    RCAN
  41  * SW41         SCIF    RCAN
  42  */
  43
  44 /* Dummy supplies, where voltage doesn't matter */
  45 static struct regulator_consumer_supply dummy_supplies[] = {
  46         REGULATOR_SUPPLY("vddvario", "smsc911x"),
  47         REGULATOR_SUPPLY("vdd33a", "smsc911x"),
  48 };
  49
  50 static struct smsc911x_platform_config smsc911x_data = {
  51         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  52         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
  53         .flags          = SMSC911X_USE_32BIT,
  54         .phy_interface  = PHY_INTERFACE_MODE_MII,
  55 };
  56
  57 static struct resource smsc911x_resources[] = {
  58         DEFINE_RES_MEM(0x18300000, 0x1000),
  59         DEFINE_RES_IRQ(irq_pin(0)), /* IRQ 0 */
  60 };
  61
  62 /* SDHI */
  63 static struct sh_mobile_sdhi_info sdhi0_info = {
  64         .tmio_caps      = MMC_CAP_SD_HIGHSPEED,
  65         .tmio_ocr_mask  = MMC_VDD_165_195 | MMC_VDD_32_33 | MMC_VDD_33_34,
  66         .tmio_flags     = TMIO_MMC_HAS_IDLE_WAIT,
  67 };
  68
  69 static struct sh_eth_plat_data ether_platform_data __initdata = {
  70         .phy            = 0x01,
  71         .edmac_endian   = EDMAC_LITTLE_ENDIAN,
  72         .register_type  = SH_ETH_REG_FAST_RCAR,
  73         .phy_interface  = PHY_INTERFACE_MODE_RMII,
  74         /*
  75          * Although the LINK signal is available on the board, it's connected to
  76          * the link/activity LED output of the PHY, thus the link disappears and
  77          * reappears after each packet.  We'd be better off ignoring such signal
  78          * and getting the link state from the PHY indirectly.
  79          */
  80         .no_ether_link  = 1,
  81 };
  82
  83 /* I2C */
  84 static struct i2c_board_info i2c0_devices[] = {
  85         {
  86                 I2C_BOARD_INFO("rx8581", 0x51),
  87         },
  88 };
  89
  90 /* HSPI*/
  91 static struct mtd_partition m25p80_spi_flash_partitions[] = {
  92         {
  93                 .name   = "data(spi)",
  94                 .size   = 0x0100000,
  95                 .offset = 0,
  96         },
  97 };
  98
  99 static struct flash_platform_data spi_flash_data = {
 100         .name           = "m25p80",
 101         .type           = "s25fl008k",
 102         .parts          = m25p80_spi_flash_partitions,
 103         .nr_parts       = ARRAY_SIZE(m25p80_spi_flash_partitions),
 104 };
 105
 106 static struct spi_board_info spi_board_info[] __initdata = {
 107         {
 108                 .modalias       = "m25p80",
 109                 .max_speed_hz   = 104000000,
 110                 .chip_select    = 0,
 111                 .bus_num        = 0,
 112                 .mode           = SPI_MODE_0,
 113                 .platform_data  = &spi_flash_data,
 114         },
 115 };
 116
 117 static const struct pinctrl_map bockw_pinctrl_map[] = {
 118         /* Ether */
 119         PIN_MAP_MUX_GROUP_DEFAULT("sh-eth", "pfc-r8a7778",
 120                                   "ether_rmii", "ether"),
 121         /* HSPI0 */
 122         PIN_MAP_MUX_GROUP_DEFAULT("sh-hspi.0", "pfc-r8a7778",
 123                                   "hspi0_a", "hspi0"),
 124         /* SCIF0 */
 125         PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.0", "pfc-r8a7778",
 126                                   "scif0_data_a", "scif0"),
 127         PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.0", "pfc-r8a7778",
 128                                   "scif0_ctrl", "scif0"),
 129         /* SDHI0 */
 130         PIN_MAP_MUX_GROUP_DEFAULT("sh_mobile_sdhi.0", "pfc-r8a7778",
 131                                   "sdhi0", "sdhi0"),
 132 };
 133
 134 #define FPGA    0x18200000
 135 #define IRQ0MR  0x30
 136 #define PFC     0xfffc0000
 137 #define PUPR4   0x110
 138 static void __init bockw_init(void)
 139 {
 140         void __iomem *base;
 141
 142         r8a7778_clock_init();
 143         r8a7778_init_irq_extpin(1);
 144         r8a7778_add_standard_devices();
 145         r8a7778_add_ether_device(&ether_platform_data);
 146         r8a7778_add_i2c_device(0);
 147         r8a7778_add_hspi_device(0);
 148
 149         i2c_register_board_info(0, i2c0_devices,
 150                                 ARRAY_SIZE(i2c0_devices));
 151         spi_register_board_info(spi_board_info,
 152                                 ARRAY_SIZE(spi_board_info));
 153         pinctrl_register_mappings(bockw_pinctrl_map,
 154                                   ARRAY_SIZE(bockw_pinctrl_map));
 155         r8a7778_pinmux_init();
 156
 157         /* for SMSC */
 158         base = ioremap_nocache(FPGA, SZ_1M);
 159         if (base) {
 160                 /*
 161                  * CAUTION
 162                  *
 163                  * IRQ0/1 is cascaded interrupt from FPGA.
 164                  * it should be cared in the future
 165                  * Now, it is assuming IRQ0 was used only from SMSC.
 166                  */
 167                 u16 val = ioread16(base + IRQ0MR);
 168                 val &= ~(1 << 4); /* enable SMSC911x */
 169                 iowrite16(val, base + IRQ0MR);
 170                 iounmap(base);
 171
 172                 regulator_register_fixed(0, dummy_supplies,
 173                                          ARRAY_SIZE(dummy_supplies));
 174
 175                 platform_device_register_resndata(
 176                         &platform_bus, "smsc911x", -1,
 177                         smsc911x_resources, ARRAY_SIZE(smsc911x_resources),
 178                         &smsc911x_data, sizeof(smsc911x_data));
 179         }
 180
 181         /* for SDHI */
 182         base = ioremap_nocache(PFC, 0x200);
 183         if (base) {
 184                 /*
 185                  * FIXME
 186                  *
 187                  * SDHI CD/WP pin needs pull-up
 188                  */
 189                 iowrite32(ioread32(base + PUPR4) | (3 << 26), base + PUPR4);
 190                 iounmap(base);
 191
 192                 r8a7778_sdhi_init(0, &sdhi0_info);
 193         }
 194 }
 195
 196 static const char *bockw_boards_compat_dt[] __initdata = {
 197         "renesas,bockw",
 198         NULL,
 199 };
 200
 201 DT_MACHINE_START(BOCKW_DT, "bockw")
 202         .init_early     = r8a7778_init_delay,
 203         .init_irq       = r8a7778_init_irq_dt,
 204         .init_machine   = bockw_init,
 205         .init_time      = shmobile_timer_init,
 206         .dt_compat      = bockw_boards_compat_dt,
 207 MACHINE_END