arch/arm/mach-at91/sama5.c

   1 /*
   2  *  Setup code for SAMA5
   3  *
   4  *  Copyright (C) 2013 Atmel,
   5  *                2013 Ludovic Desroches <ludovic.desroches@atmel.com>
   6  *
   7  * Licensed under GPLv2 or later.
   8  */
   9
  10 #include <linux/of.h>
  11 #include <linux/of_platform.h>
  12
  13 #include <asm/mach/arch.h>
  14 #include <asm/mach/map.h>
  15 #include <asm/system_misc.h>
  16
  17 #include <mach/hardware.h>
  18
  19 #include "generic.h"
  20 #include "soc.h"
  21
  22 static const struct at91_soc sama5_socs[] = {
  23         AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D31_EXID_MATCH,
  24                  "sama5d31", "sama5d3"),
  25         AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D33_EXID_MATCH,
  26                  "sama5d33", "sama5d3"),
  27         AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D34_EXID_MATCH,
  28                  "sama5d34", "sama5d3"),
  29         AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D35_EXID_MATCH,
  30                  "sama5d35", "sama5d3"),
  31         AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D36_EXID_MATCH,
  32                  "sama5d36", "sama5d3"),
  33         AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D41_EXID_MATCH,
  34                  "sama5d41", "sama5d4"),
  35         AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D42_EXID_MATCH,
  36                  "sama5d42", "sama5d4"),
  37         AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D43_EXID_MATCH,
  38                  "sama5d43", "sama5d4"),
  39         AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D44_EXID_MATCH,
  40                  "sama5d44", "sama5d4"),
  41         { /* sentinel */ },
  42 };
  43
  44 static void __init sama5_dt_device_init(void)
  45 {
  46         struct soc_device *soc;
  47         struct device *soc_dev = NULL;
  48
  49         soc = at91_soc_init(sama5_socs);
  50         if (soc != NULL)
  51                 soc_dev = soc_device_to_device(soc);
  52
  53         of_platform_populate(NULL, of_default_bus_match_table, NULL, soc_dev);
  54         at91sam9x5_pm_init();
  55 }
  56
  57 static const char *sama5_dt_board_compat[] __initconst = {
  58         "atmel,sama5",
  59         NULL
  60 };
  61
  62 DT_MACHINE_START(sama5_dt, "Atmel SAMA5")
  63         /* Maintainer: Atmel */
  64         .init_machine   = sama5_dt_device_init,
  65         .dt_compat      = sama5_dt_board_compat,
  66 MACHINE_END
  67
  68 static struct map_desc at91_io_desc[] __initdata = {
  69         {
  70         .virtual        = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_MPDDRC),
  71         .pfn            = __phys_to_pfn(SAMA5D4_BASE_MPDDRC),
  72         .length         = SZ_512,
  73         .type           = MT_DEVICE,
  74         },
  75         {
  76         .virtual        = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_PMC),
  77         .pfn            = __phys_to_pfn(SAMA5D4_BASE_PMC),
  78         .length         = SZ_512,
  79         .type           = MT_DEVICE,
  80         },
  81         { /* On sama5d4, we use USART3 as serial console */
  82         .virtual        = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_USART3),
  83         .pfn            = __phys_to_pfn(SAMA5D4_BASE_USART3),
  84         .length         = SZ_256,
  85         .type           = MT_DEVICE,
  86         },
  87         { /* A bunch of peripheral with fine grained IO space */
  88         .virtual        = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_SYS2),
  89         .pfn            = __phys_to_pfn(SAMA5D4_BASE_SYS2),
  90         .length         = SZ_2K,
  91         .type           = MT_DEVICE,
  92         },
  93 };
  94
  95 static void __init sama5_alt_map_io(void)
  96 {
  97         iotable_init(at91_io_desc, ARRAY_SIZE(at91_io_desc));
  98 }
  99
 100 static const char *sama5_alt_dt_board_compat[] __initconst = {
 101         "atmel,sama5d4",
 102         NULL
 103 };
 104
 105 DT_MACHINE_START(sama5_alt_dt, "Atmel SAMA5")
 106         /* Maintainer: Atmel */
 107         .map_io         = sama5_alt_map_io,
 108         .init_machine   = sama5_dt_device_init,
 109         .dt_compat      = sama5_alt_dt_board_compat,
 110         .l2c_aux_mask   = ~0UL,
 111 MACHINE_END