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/types.h>
  11 #include <linux/init.h>
  12 #include <linux/module.h>
  13 #include <linux/gpio.h>
  14 #include <linux/micrel_phy.h>
  15 #include <linux/of.h>
  16 #include <linux/of_irq.h>
  17 #include <linux/of_platform.h>
  18 #include <linux/phy.h>
  19 #include <linux/clk-provider.h>
  20 #include <linux/phy.h>
  21
  22 #include <mach/hardware.h>
  23
  24 #include <asm/setup.h>
  25 #include <asm/irq.h>
  26 #include <asm/mach/arch.h>
  27 #include <asm/mach/map.h>
  28 #include <asm/mach/irq.h>
  29
  30 #include "generic.h"
  31
  32 static int ksz8081_phy_fixup(struct phy_device *phy)
  33 {
  34         int value;
  35
  36         value = phy_read(phy, 0x16);
  37         value &= ~0x20;
  38         phy_write(phy, 0x16, value);
  39
  40         return 0;
  41 }
  42
  43 static void __init sama5_dt_device_init(void)
  44 {
  45         if (of_machine_is_compatible("atmel,sama5d4ek") &&
  46            IS_ENABLED(CONFIG_PHYLIB)) {
  47                 phy_register_fixup_for_id("fc028000.etherne:00",
  48                                                 ksz8081_phy_fixup);
  49         }
  50
  51         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
  52         at91sam9x5_pm_init();
  53 }
  54
  55 static const char *sama5_dt_board_compat[] __initconst = {
  56         "atmel,sama5",
  57         NULL
  58 };
  59
  60 DT_MACHINE_START(sama5_dt, "Atmel SAMA5")
  61         /* Maintainer: Atmel */
  62         .map_io         = at91_map_io,
  63         .init_machine   = sama5_dt_device_init,
  64         .dt_compat      = sama5_dt_board_compat,
  65 MACHINE_END
  66
  67 static struct map_desc at91_io_desc[] __initdata = {
  68         {
  69         .virtual        = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_MPDDRC),
  70         .pfn            = __phys_to_pfn(SAMA5D4_BASE_MPDDRC),
  71         .length         = SZ_512,
  72         .type           = MT_DEVICE,
  73         },
  74         {
  75         .virtual        = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_PMC),
  76         .pfn            = __phys_to_pfn(SAMA5D4_BASE_PMC),
  77         .length         = SZ_512,
  78         .type           = MT_DEVICE,
  79         },
  80         { /* On sama5d4, we use USART3 as serial console */
  81         .virtual        = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_USART3),
  82         .pfn            = __phys_to_pfn(SAMA5D4_BASE_USART3),
  83         .length         = SZ_256,
  84         .type           = MT_DEVICE,
  85         },
  86         { /* A bunch of peripheral with fine grained IO space */
  87         .virtual        = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_SYS2),
  88         .pfn            = __phys_to_pfn(SAMA5D4_BASE_SYS2),
  89         .length         = SZ_2K,
  90         .type           = MT_DEVICE,
  91         },
  92 };
  93
  94 static void __init sama5_alt_map_io(void)
  95 {
  96         at91_alt_map_io();
  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