arch/arm/mach-sunxi/sunxi.c

   1 /*
   2  * Device Tree support for Allwinner A1X SoCs
   3  *
   4  * Copyright (C) 2012 Maxime Ripard
   5  *
   6  * Maxime Ripard <maxime.ripard@free-electrons.com>
   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_irq.h>
  16 #include <linux/of_platform.h>
  17 #include <linux/io.h>
  18 #include <linux/sunxi_timer.h>
  19
  20 #include <linux/irqchip/sunxi.h>
  21
  22 #include <asm/hardware/vic.h>
  23
  24 #include <asm/mach/arch.h>
  25 #include <asm/mach/map.h>
  26
  27 #include "sunxi.h"
  28
  29 static struct map_desc sunxi_io_desc[] __initdata = {
  30         {
  31                 .virtual        = (unsigned long) SUNXI_REGS_VIRT_BASE,
  32                 .pfn            = __phys_to_pfn(SUNXI_REGS_PHYS_BASE),
  33                 .length         = SUNXI_REGS_SIZE,
  34                 .type           = MT_DEVICE,
  35         },
  36 };
  37
  38 void __init sunxi_map_io(void)
  39 {
  40         iotable_init(sunxi_io_desc, ARRAY_SIZE(sunxi_io_desc));
  41 }
  42
  43 static void __init sunxi_dt_init(void)
  44 {
  45         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
  46 }
  47
  48 static const char * const sunxi_board_dt_compat[] = {
  49         "allwinner,sun4i",
  50         "allwinner,sun5i",
  51         NULL,
  52 };
  53
  54 DT_MACHINE_START(SUNXI_DT, "Allwinner A1X (Device Tree)")
  55         .init_machine   = sunxi_dt_init,
  56         .map_io         = sunxi_map_io,
  57         .init_irq       = sunxi_init_irq,
  58         .handle_irq     = sunxi_handle_irq,
  59         .timer          = &sunxi_timer,
  60         .dt_compat      = sunxi_board_dt_compat,
  61 MACHINE_END