arch/arm/mach-shmobile/setup-emev2.c

   1 /*
   2  * Emma Mobile EV2 processor support
   3  *
   4  * Copyright (C) 2012  Magnus Damm
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18  */
  19 #include <linux/clk-provider.h>
  20 #include <linux/kernel.h>
  21 #include <linux/init.h>
  22 #include <linux/of_platform.h>
  23 #include <mach/common.h>
  24 #include <asm/mach-types.h>
  25 #include <asm/mach/arch.h>
  26 #include <asm/mach/map.h>
  27
  28 static struct map_desc emev2_io_desc[] __initdata = {
  29 #ifdef CONFIG_SMP
  30         /* 2M mapping for SCU + L2 controller */
  31         {
  32                 .virtual        = 0xf0000000,
  33                 .pfn            = __phys_to_pfn(0x1e000000),
  34                 .length         = SZ_2M,
  35                 .type           = MT_DEVICE
  36         },
  37 #endif
  38 };
  39
  40 static void __init emev2_map_io(void)
  41 {
  42         iotable_init(emev2_io_desc, ARRAY_SIZE(emev2_io_desc));
  43 }
  44
  45 static void __init emev2_init_delay(void)
  46 {
  47         shmobile_setup_delay(533, 1, 3); /* Cortex-A9 @ 533MHz */
  48 }
  49
  50 static void __init emev2_add_standard_devices_dt(void)
  51 {
  52         of_clk_init(NULL);
  53         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
  54 }
  55
  56 static const char *emev2_boards_compat_dt[] __initconst = {
  57         "renesas,emev2",
  58         NULL,
  59 };
  60
  61 extern struct smp_operations emev2_smp_ops;
  62
  63 DT_MACHINE_START(EMEV2_DT, "Generic Emma Mobile EV2 (Flattened Device Tree)")
  64         .smp            = smp_ops(emev2_smp_ops),
  65         .map_io         = emev2_map_io,
  66         .init_early     = emev2_init_delay,
  67         .init_machine   = emev2_add_standard_devices_dt,
  68         .init_late      = shmobile_init_late,
  69         .dt_compat      = emev2_boards_compat_dt,
  70 MACHINE_END