arch/arm/mach-spear/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/irqchip.h>
  18 #include <linux/of_platform.h>
  19 #include <linux/pata_arasan_cf_data.h>
  20 #include <asm/mach/arch.h>
  21 #include <asm/mach/map.h>
  22 #include "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
  34 static struct arasan_cf_pdata cf_pdata = {
  35         .cf_if_clk = CF_IF_CLK_166M,
  36         .quirk = CF_BROKEN_UDMA,
  37         .dma_priv = &cf_dma_priv,
  38 };
  39
  40 /* ssp device registration */
  41 static struct pl022_ssp_controller ssp1_plat_data = {
  42         .enable_dma = 0,
  43 };
  44
  45 /* Add SPEAr1310 auxdata to pass platform data */
  46 static struct of_dev_auxdata spear1310_auxdata_lookup[] __initdata = {
  47         OF_DEV_AUXDATA("arasan,cf-spear1340", MCIF_CF_BASE, NULL, &cf_pdata),
  48         OF_DEV_AUXDATA("snps,dma-spear1340", DMAC0_BASE, NULL, &dmac_plat_data),
  49         OF_DEV_AUXDATA("snps,dma-spear1340", DMAC1_BASE, NULL, &dmac_plat_data),
  50         OF_DEV_AUXDATA("arm,pl022", SSP_BASE, NULL, &pl022_plat_data),
  51
  52         OF_DEV_AUXDATA("arm,pl022", SPEAR1310_SSP1_BASE, NULL, &ssp1_plat_data),
  53         {}
  54 };
  55
  56 static void __init spear1310_dt_init(void)
  57 {
  58         of_platform_populate(NULL, of_default_bus_match_table,
  59                         spear1310_auxdata_lookup, NULL);
  60 }
  61
  62 static const char * const spear1310_dt_board_compat[] = {
  63         "st,spear1310",
  64         "st,spear1310-evb",
  65         NULL,
  66 };
  67
  68 /*
  69  * Following will create 16MB static virtual/physical mappings
  70  * PHYSICAL             VIRTUAL
  71  * 0xD8000000           0xFA000000
  72  */
  73 struct map_desc spear1310_io_desc[] __initdata = {
  74         {
  75                 .virtual        = VA_SPEAR1310_RAS_GRP1_BASE,
  76                 .pfn            = __phys_to_pfn(SPEAR1310_RAS_GRP1_BASE),
  77                 .length         = SZ_16M,
  78                 .type           = MT_DEVICE
  79         },
  80 };
  81
  82 static void __init spear1310_map_io(void)
  83 {
  84         iotable_init(spear1310_io_desc, ARRAY_SIZE(spear1310_io_desc));
  85         spear13xx_map_io();
  86 }
  87
  88 DT_MACHINE_START(SPEAR1310_DT, "ST SPEAr1310 SoC with Flattened Device Tree")
  89         .smp            =       smp_ops(spear13xx_smp_ops),
  90         .map_io         =       spear1310_map_io,
  91         .init_irq       =       irqchip_init,
  92         .init_time      =       spear13xx_timer_init,
  93         .init_machine   =       spear1310_dt_init,
  94         .restart        =       spear_restart,
  95         .dt_compat      =       spear1310_dt_board_compat,
  96 MACHINE_END