arch/arm/mach-spear13xx/spear1310.c

   1 /*
   2  * arch/arm/mach-spear13xx/spear1310.c
   3  *
   4  * SPEAr1310 machine source file
   5  *
   6  * Copyright (C) 2012 ST Microelectronics
   7  * Viresh Kumar <viresh.linux@gmail.com>
   8  *
   9  * This file is licensed under the terms of the GNU General Public
  10  * License version 2. This program is licensed "as is" without any
  11  * warranty of any kind, whether express or implied.
  12  */
  13
  14 #define pr_fmt(fmt) "SPEAr1310: " fmt
  15
  16 #include <linux/amba/pl022.h>
  17 #include <linux/of_platform.h>
  18 #include <linux/pata_arasan_cf_data.h>
  19 #include <asm/hardware/gic.h>
  20 #include <asm/mach/arch.h>
  21 #include <asm/mach/map.h>
  22 #include <mach/generic.h>
  23 #include <mach/spear.h>
  24
  25 /* Base addresses */
  26 #define SPEAR1310_SSP1_BASE                     UL(0x5D400000)
  27 #define SPEAR1310_SATA0_BASE                    UL(0xB1000000)
  28 #define SPEAR1310_SATA1_BASE                    UL(0xB1800000)
  29 #define SPEAR1310_SATA2_BASE                    UL(0xB4000000)
  30
  31 #define SPEAR1310_RAS_GRP1_BASE                 UL(0xD8000000)
  32 #define VA_SPEAR1310_RAS_GRP1_BASE              UL(0xFA000000)
  33 #define SPEAR1310_RAS_BASE                      UL(0xD8400000)
  34 #define VA_SPEAR1310_RAS_BASE                   IOMEM(UL(0xFA400000))
  35
  36 static struct arasan_cf_pdata cf_pdata = {
  37         .cf_if_clk = CF_IF_CLK_166M,
  38         .quirk = CF_BROKEN_UDMA,
  39         .dma_priv = &cf_dma_priv,
  40 };
  41
  42 /* ssp device registration */
  43 static struct pl022_ssp_controller ssp1_plat_data = {
  44         .enable_dma = 0,
  45 };
  46
  47 /* Add SPEAr1310 auxdata to pass platform data */
  48 static struct of_dev_auxdata spear1310_auxdata_lookup[] __initdata = {
  49         OF_DEV_AUXDATA("arasan,cf-spear1340", MCIF_CF_BASE, NULL, &cf_pdata),
  50         OF_DEV_AUXDATA("snps,dma-spear1340", DMAC0_BASE, NULL, &dmac_plat_data),
  51         OF_DEV_AUXDATA("snps,dma-spear1340", DMAC1_BASE, NULL, &dmac_plat_data),
  52         OF_DEV_AUXDATA("arm,pl022", SSP_BASE, NULL, &pl022_plat_data),
  53
  54         OF_DEV_AUXDATA("arm,pl022", SPEAR1310_SSP1_BASE, NULL, &ssp1_plat_data),
  55         {}
  56 };
  57
  58 static void __init spear1310_dt_init(void)
  59 {
  60         of_platform_populate(NULL, of_default_bus_match_table,
  61                         spear1310_auxdata_lookup, NULL);
  62 }
  63
  64 static const char * const spear1310_dt_board_compat[] = {
  65         "st,spear1310",
  66         "st,spear1310-evb",
  67         NULL,
  68 };
  69
  70 /*
  71  * Following will create 16MB static virtual/physical mappings
  72  * PHYSICAL             VIRTUAL
  73  * 0xD8000000           0xFA000000
  74  */
  75 struct map_desc spear1310_io_desc[] __initdata = {
  76         {
  77                 .virtual        = VA_SPEAR1310_RAS_GRP1_BASE,
  78                 .pfn            = __phys_to_pfn(SPEAR1310_RAS_GRP1_BASE),
  79                 .length         = SZ_16M,
  80                 .type           = MT_DEVICE
  81         },
  82 };
  83
  84 static void __init spear1310_map_io(void)
  85 {
  86         iotable_init(spear1310_io_desc, ARRAY_SIZE(spear1310_io_desc));
  87         spear13xx_map_io();
  88 }
  89
  90 DT_MACHINE_START(SPEAR1310_DT, "ST SPEAr1310 SoC with Flattened Device Tree")
  91         .smp            =       smp_ops(spear13xx_smp_ops),
  92         .map_io         =       spear1310_map_io,
  93         .init_irq       =       spear13xx_dt_init_irq,
  94         .handle_irq     =       gic_handle_irq,
  95         .init_time      =       spear13xx_timer_init,
  96         .init_machine   =       spear1310_dt_init,
  97         .restart        =       spear_restart,
  98         .dt_compat      =       spear1310_dt_board_compat,
  99 MACHINE_END