arch/arm/mach-shmobile/board-lager-reference.c

   1 /*
   2  * Lager board support - Reference DT implementation
   3  *
   4  * Copyright (C) 2013  Renesas Solutions Corp.
   5  * Copyright (C) 2013  Simon Horman
   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/clk.h>
  22 #include <linux/clkdev.h>
  23 #include <linux/init.h>
  24 #include <linux/of_platform.h>
  25 #include <mach/common.h>
  26 #include <mach/rcar-gen2.h>
  27 #include <mach/r8a7790.h>
  28 #include <asm/mach/arch.h>
  29
  30 static void __init lager_add_standard_devices(void)
  31 {
  32 #ifdef CONFIG_COMMON_CLK
  33         /*
  34          * This is a really crude hack to provide clkdev support to the SCIF
  35          * and CMT devices until they get moved to DT.
  36          */
  37         static const char * const scif_names[] = {
  38                 "scifa0", "scifa1", "scifb0", "scifb1",
  39                 "scifb2", "scifa2", "scif0", "scif1",
  40                 "hscif0", "hscif1",
  41         };
  42         struct clk *clk;
  43         unsigned int i;
  44
  45         for (i = 0; i < ARRAY_SIZE(scif_names); ++i) {
  46                 clk = clk_get(NULL, scif_names[i]);
  47                 if (clk) {
  48                         clk_register_clkdev(clk, NULL, "sh-sci.%u", i);
  49                         clk_put(clk);
  50                 }
  51         }
  52
  53         clk = clk_get(NULL, "cmt0");
  54         if (clk) {
  55                 clk_register_clkdev(clk, NULL, "sh_cmt.0");
  56                 clk_put(clk);
  57         }
  58 #else
  59         r8a7790_clock_init();
  60 #endif
  61
  62         r8a7790_add_dt_devices();
  63         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
  64 }
  65
  66 static const char *lager_boards_compat_dt[] __initdata = {
  67         "renesas,lager",
  68         "renesas,lager-reference",
  69         NULL,
  70 };
  71
  72 DT_MACHINE_START(LAGER_DT, "lager")
  73         .smp            = smp_ops(r8a7790_smp_ops),
  74         .init_early     = r8a7790_init_early,
  75         .init_time      = rcar_gen2_timer_init,
  76         .init_machine   = lager_add_standard_devices,
  77         .init_late      = shmobile_init_late,
  78         .dt_compat      = lager_boards_compat_dt,
  79 MACHINE_END