arch/arm/mach-dove/board-dt.c

   1 /*
   2  * arch/arm/mach-dove/board-dt.c
   3  *
   4  * Marvell Dove 88AP510 System On Chip FDT Board
   5  *
   6  * This file is licensed under the terms of the GNU General Public
   7  * License version 2.  This program is licensed "as is" without any
   8  * warranty of any kind, whether express or implied.
   9  */
  10
  11 #include <linux/init.h>
  12 #include <linux/clk-provider.h>
  13 #include <linux/clocksource.h>
  14 #include <linux/irqchip.h>
  15 #include <linux/of.h>
  16 #include <linux/of_platform.h>
  17 #include <linux/platform_data/usb-ehci-orion.h>
  18 #include <asm/hardware/cache-tauros2.h>
  19 #include <asm/mach/arch.h>
  20 #include <mach/dove.h>
  21 #include <mach/pm.h>
  22 #include <plat/common.h>
  23 #include <plat/irq.h>
  24 #include "common.h"
  25
  26 /*
  27  * There are still devices that doesn't even know about DT,
  28  * get clock gates here and add a clock lookup.
  29  */
  30 static void __init dove_legacy_clk_init(void)
  31 {
  32         struct device_node *np = of_find_compatible_node(NULL, NULL,
  33                                          "marvell,dove-gating-clock");
  34         struct of_phandle_args clkspec;
  35
  36         clkspec.np = np;
  37         clkspec.args_count = 1;
  38
  39         clkspec.args[0] = CLOCK_GATING_BIT_PCIE0;
  40         orion_clkdev_add("0", "pcie",
  41                          of_clk_get_from_provider(&clkspec));
  42
  43         clkspec.args[0] = CLOCK_GATING_BIT_PCIE1;
  44         orion_clkdev_add("1", "pcie",
  45                          of_clk_get_from_provider(&clkspec));
  46 }
  47
  48 static void __init dove_dt_time_init(void)
  49 {
  50         of_clk_init(NULL);
  51         clocksource_of_init();
  52 }
  53
  54 static void __init dove_dt_init_early(void)
  55 {
  56         mvebu_mbus_init("marvell,dove-mbus",
  57                         BRIDGE_WINS_BASE, BRIDGE_WINS_SZ,
  58                         DOVE_MC_WINS_BASE, DOVE_MC_WINS_SZ);
  59 }
  60
  61 static void __init dove_dt_init(void)
  62 {
  63         pr_info("Dove 88AP510 SoC\n");
  64
  65 #ifdef CONFIG_CACHE_TAUROS2
  66         tauros2_init(0);
  67 #endif
  68         dove_setup_cpu_wins();
  69
  70         /* Setup clocks for legacy devices */
  71         dove_legacy_clk_init();
  72
  73         /* Internal devices not ported to DT yet */
  74         dove_pcie_init(1, 1);
  75
  76         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
  77 }
  78
  79 static const char * const dove_dt_board_compat[] = {
  80         "marvell,dove",
  81         NULL
  82 };
  83
  84 DT_MACHINE_START(DOVE_DT, "Marvell Dove (Flattened Device Tree)")
  85         .map_io         = dove_map_io,
  86         .init_early     = dove_dt_init_early,
  87         .init_time      = dove_dt_time_init,
  88         .init_machine   = dove_dt_init,
  89         .restart        = dove_restart,
  90         .dt_compat      = dove_dt_board_compat,
  91 MACHINE_END