arch/arm/mach-shmobile/board-ape6evm.c

   1 /*
   2  * APE6EVM board support
   3  *
   4  * Copyright (C) 2013  Renesas Solutions Corp.
   5  * Copyright (C) 2013  Magnus Damm
   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/gpio.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/irqchip.h>
  24 #include <linux/kernel.h>
  25 #include <linux/pinctrl/machine.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/regulator/fixed.h>
  28 #include <linux/regulator/machine.h>
  29 #include <linux/sh_clk.h>
  30 #include <linux/smsc911x.h>
  31 #include <mach/common.h>
  32 #include <mach/irqs.h>
  33 #include <mach/r8a73a4.h>
  34 #include <asm/mach-types.h>
  35 #include <asm/mach/arch.h>
  36
  37 /* Dummy supplies, where voltage doesn't matter */
  38 static struct regulator_consumer_supply dummy_supplies[] = {
  39         REGULATOR_SUPPLY("vddvario", "smsc911x"),
  40         REGULATOR_SUPPLY("vdd33a", "smsc911x"),
  41 };
  42
  43 /* SMSC LAN9220 */
  44 static const struct resource lan9220_res[] = {
  45         DEFINE_RES_MEM(0x08000000, 0x1000),
  46         {
  47                 .start  = irq_pin(40), /* IRQ40 */
  48                 .flags  = IORESOURCE_IRQ | IRQF_TRIGGER_HIGH,
  49         },
  50 };
  51
  52 static const struct smsc911x_platform_config lan9220_data = {
  53         .flags          = SMSC911X_USE_32BIT,
  54         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
  55         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
  56 };
  57
  58 static const struct pinctrl_map ape6evm_pinctrl_map[] = {
  59         /* SCIFA0 console */
  60         PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.0", "pfc-r8a73a4",
  61                                   "scifa0_data", "scifa0"),
  62         /* SMSC */
  63         PIN_MAP_MUX_GROUP_DEFAULT("smsc911x", "pfc-r8a73a4",
  64                                   "irqc_irq40", "irqc"),
  65 };
  66
  67 static void __init ape6evm_add_standard_devices(void)
  68 {
  69
  70         struct clk *parent;
  71         struct clk *mp;
  72
  73         r8a73a4_clock_init();
  74
  75         /* MP clock parent = extal2 */
  76         parent      = clk_get(NULL, "extal2");
  77         mp          = clk_get(NULL, "mp");
  78         BUG_ON(IS_ERR(parent) || IS_ERR(mp));
  79
  80         clk_set_parent(mp, parent);
  81         clk_put(parent);
  82         clk_put(mp);
  83
  84         pinctrl_register_mappings(ape6evm_pinctrl_map,
  85                                   ARRAY_SIZE(ape6evm_pinctrl_map));
  86         r8a73a4_pinmux_init();
  87         r8a73a4_add_standard_devices();
  88
  89         /* LAN9220 ethernet */
  90         gpio_request_one(270, GPIOF_OUT_INIT_HIGH, NULL); /* smsc9220 RESET */
  91
  92         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
  93
  94         platform_device_register_resndata(&platform_bus, "smsc911x", -1,
  95                                           lan9220_res, ARRAY_SIZE(lan9220_res),
  96                                           &lan9220_data, sizeof(lan9220_data));
  97 }
  98
  99 static const char *ape6evm_boards_compat_dt[] __initdata = {
 100         "renesas,ape6evm",
 101         NULL,
 102 };
 103
 104 DT_MACHINE_START(APE6EVM_DT, "ape6evm")
 105         .init_irq       = irqchip_init,
 106         .init_time      = shmobile_timer_init,
 107         .init_machine   = ape6evm_add_standard_devices,
 108         .dt_compat      = ape6evm_boards_compat_dt,
 109 MACHINE_END