arch/arm/mach-orion5x/board-dt.c

   1 /*
   2  * Copyright 2012 (C), Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
   3  *
   4  * arch/arm/mach-orion5x/board-dt.c
   5  *
   6  * Flattened Device Tree board initialization
   7  *
   8  * This file is licensed under the terms of the GNU General Public
   9  * License version 2.  This program is licensed "as is" without any
  10  * warranty of any kind, whether express or implied.
  11  */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/of.h>
  16 #include <linux/of_platform.h>
  17 #include <linux/cpu.h>
  18 #include <linux/mbus.h>
  19 #include <linux/clk-provider.h>
  20 #include <linux/clocksource.h>
  21 #include <asm/system_misc.h>
  22 #include <asm/mach/arch.h>
  23 #include <asm/mach/map.h>
  24 #include <mach/orion5x.h>
  25 #include <mach/bridge-regs.h>
  26 #include <plat/irq.h>
  27 #include <plat/time.h>
  28 #include "common.h"
  29
  30 static struct of_dev_auxdata orion5x_auxdata_lookup[] __initdata = {
  31         OF_DEV_AUXDATA("marvell,orion-spi", 0xf1010600, "orion_spi.0", NULL),
  32         OF_DEV_AUXDATA("marvell,mv64xxx-i2c", 0xf1011000, "mv64xxx_i2c.0",
  33                        NULL),
  34         OF_DEV_AUXDATA("marvell,orion-wdt", 0xf1020300, "orion_wdt", NULL),
  35         OF_DEV_AUXDATA("marvell,orion-sata", 0xf1080000, "sata_mv.0", NULL),
  36         OF_DEV_AUXDATA("marvell,orion-crypto", 0xf1090000, "mv_crypto", NULL),
  37         {},
  38 };
  39
  40 static void __init orion5x_dt_init(void)
  41 {
  42         char *dev_name;
  43         u32 dev, rev;
  44
  45         orion5x_id(&dev, &rev, &dev_name);
  46         printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, orion5x_tclk);
  47
  48         BUG_ON(mvebu_mbus_dt_init(false));
  49
  50         /*
  51          * Setup Orion address map
  52          */
  53         orion5x_setup_wins();
  54
  55         /*
  56          * Don't issue "Wait for Interrupt" instruction if we are
  57          * running on D0 5281 silicon.
  58          */
  59         if (dev == MV88F5281_DEV_ID && rev == MV88F5281_REV_D0) {
  60                 printk(KERN_INFO "Orion: Applying 5281 D0 WFI workaround.\n");
  61                 cpu_idle_poll_ctrl(true);
  62         }
  63
  64         if (of_machine_is_compatible("maxtor,shared-storage-2"))
  65                 mss2_init();
  66
  67         of_platform_populate(NULL, of_default_bus_match_table,
  68                              orion5x_auxdata_lookup, NULL);
  69 }
  70
  71 static const char *orion5x_dt_compat[] = {
  72         "marvell,orion5x",
  73         NULL,
  74 };
  75
  76 DT_MACHINE_START(ORION5X_DT, "Marvell Orion5x (Flattened Device Tree)")
  77         /* Maintainer: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> */
  78         .map_io         = orion5x_map_io,
  79         .init_machine   = orion5x_dt_init,
  80         .restart        = orion5x_restart,
  81         .dt_compat      = orion5x_dt_compat,
  82 MACHINE_END