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/pinctrl/machine.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/regulator/fixed.h>
  26 #include <linux/regulator/machine.h>
  27 #include <linux/smsc911x.h>
  28 #include <mach/common.h>
  29 #include <mach/irqs.h>
  30 #include <mach/r8a7778.h>
  31 #include <asm/mach/arch.h>
  32
  33 /*
  34  *      CN9(Upper side) SCIF/RCAN selection
  35  *
  36  *              1,4     3,6
  37  * SW40         SCIF    RCAN
  38  * SW41         SCIF    RCAN
  39  */
  40
  41 /* Dummy supplies, where voltage doesn't matter */
  42 static struct regulator_consumer_supply dummy_supplies[] = {
  43         REGULATOR_SUPPLY("vddvario", "smsc911x"),
  44         REGULATOR_SUPPLY("vdd33a", "smsc911x"),
  45 };
  46
  47 static struct smsc911x_platform_config smsc911x_data = {
  48         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  49         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
  50         .flags          = SMSC911X_USE_32BIT,
  51         .phy_interface  = PHY_INTERFACE_MODE_MII,
  52 };
  53
  54 static struct resource smsc911x_resources[] = {
  55         DEFINE_RES_MEM(0x18300000, 0x1000),
  56         DEFINE_RES_IRQ(irq_pin(0)), /* IRQ 0 */
  57 };
  58
  59 /* SDHI */
  60 static struct sh_mobile_sdhi_info sdhi0_info = {
  61         .tmio_caps      = MMC_CAP_SD_HIGHSPEED,
  62         .tmio_ocr_mask  = MMC_VDD_165_195 | MMC_VDD_32_33 | MMC_VDD_33_34,
  63         .tmio_flags     = TMIO_MMC_HAS_IDLE_WAIT,
  64 };
  65
  66 static struct sh_eth_plat_data ether_platform_data __initdata = {
  67         .phy            = 0x01,
  68         .edmac_endian   = EDMAC_LITTLE_ENDIAN,
  69         .register_type  = SH_ETH_REG_FAST_RCAR,
  70         .phy_interface  = PHY_INTERFACE_MODE_RMII,
  71         /*
  72          * Although the LINK signal is available on the board, it's connected to
  73          * the link/activity LED output of the PHY, thus the link disappears and
  74          * reappears after each packet.  We'd be better off ignoring such signal
  75          * and getting the link state from the PHY indirectly.
  76          */
  77         .no_ether_link  = 1,
  78 };
  79
  80 static const struct pinctrl_map bockw_pinctrl_map[] = {
  81         /* Ether */
  82         PIN_MAP_MUX_GROUP_DEFAULT("sh-eth", "pfc-r8a7778",
  83                                   "ether_rmii", "ether"),
  84         /* SCIF0 */
  85         PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.0", "pfc-r8a7778",
  86                                   "scif0_data_a", "scif0"),
  87         PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.0", "pfc-r8a7778",
  88                                   "scif0_ctrl", "scif0"),
  89         /* SDHI0 */
  90         PIN_MAP_MUX_GROUP_DEFAULT("sh_mobile_sdhi.0", "pfc-r8a7778",
  91                                   "sdhi0", "sdhi0"),
  92 };
  93
  94 #define FPGA    0x18200000
  95 #define IRQ0MR  0x30
  96 #define PFC     0xfffc0000
  97 #define PUPR4   0x110
  98 static void __init bockw_init(void)
  99 {
 100         void __iomem *base;
 101
 102         r8a7778_clock_init();
 103         r8a7778_init_irq_extpin(1);
 104         r8a7778_add_standard_devices();
 105         r8a7778_add_ether_device(&ether_platform_data);
 106
 107         pinctrl_register_mappings(bockw_pinctrl_map,
 108                                   ARRAY_SIZE(bockw_pinctrl_map));
 109         r8a7778_pinmux_init();
 110
 111         /* for SMSC */
 112         base = ioremap_nocache(FPGA, SZ_1M);
 113         if (base) {
 114                 /*
 115                  * CAUTION
 116                  *
 117                  * IRQ0/1 is cascaded interrupt from FPGA.
 118                  * it should be cared in the future
 119                  * Now, it is assuming IRQ0 was used only from SMSC.
 120                  */
 121                 u16 val = ioread16(base + IRQ0MR);
 122                 val &= ~(1 << 4); /* enable SMSC911x */
 123                 iowrite16(val, base + IRQ0MR);
 124                 iounmap(base);
 125
 126                 regulator_register_fixed(0, dummy_supplies,
 127                                          ARRAY_SIZE(dummy_supplies));
 128
 129                 platform_device_register_resndata(
 130                         &platform_bus, "smsc911x", -1,
 131                         smsc911x_resources, ARRAY_SIZE(smsc911x_resources),
 132                         &smsc911x_data, sizeof(smsc911x_data));
 133         }
 134
 135         /* for SDHI */
 136         base = ioremap_nocache(PFC, 0x200);
 137         if (base) {
 138                 /*
 139                  * FIXME
 140                  *
 141                  * SDHI CD/WP pin needs pull-up
 142                  */
 143                 iowrite32(ioread32(base + PUPR4) | (3 << 26), base + PUPR4);
 144                 iounmap(base);
 145
 146                 r8a7778_sdhi_init(0, &sdhi0_info);
 147         }
 148 }
 149
 150 static const char *bockw_boards_compat_dt[] __initdata = {
 151         "renesas,bockw",
 152         NULL,
 153 };
 154
 155 DT_MACHINE_START(BOCKW_DT, "bockw")
 156         .init_early     = r8a7778_init_delay,
 157         .init_irq       = r8a7778_init_irq_dt,
 158         .init_machine   = bockw_init,
 159         .init_time      = shmobile_timer_init,
 160         .dt_compat      = bockw_boards_compat_dt,
 161 MACHINE_END