arch/arm/mach-at91/sama5d4.c

   1 /*
   2  *  Chip-specific setup code for the SAMA5D4 family
   3  *
   4  *  Copyright (C) 2013 Atmel Corporation,
   5  *                     Nicolas Ferre <nicolas.ferre@atmel.com>
   6  *
   7  * Licensed under GPLv2 or later.
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/dma-mapping.h>
  12 #include <linux/clk/at91_pmc.h>
  13
  14 #include <asm/irq.h>
  15 #include <asm/mach/arch.h>
  16 #include <asm/mach/map.h>
  17 #include <mach/sama5d4.h>
  18 #include <mach/cpu.h>
  19 #include <mach/hardware.h>
  20
  21 #include "soc.h"
  22 #include "generic.h"
  23 #include "sam9_smc.h"
  24
  25 /* --------------------------------------------------------------------
  26  *  Processor initialization
  27  * -------------------------------------------------------------------- */
  28 static struct map_desc at91_io_desc[] __initdata = {
  29         {
  30         .virtual        = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_MPDDRC),
  31         .pfn            = __phys_to_pfn(SAMA5D4_BASE_MPDDRC),
  32         .length         = SZ_512,
  33         .type           = MT_DEVICE,
  34         },
  35         {
  36         .virtual        = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_PMC),
  37         .pfn            = __phys_to_pfn(SAMA5D4_BASE_PMC),
  38         .length         = SZ_512,
  39         .type           = MT_DEVICE,
  40         },
  41         { /* On sama5d4, we use USART3 as serial console */
  42         .virtual        = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_USART3),
  43         .pfn            = __phys_to_pfn(SAMA5D4_BASE_USART3),
  44         .length         = SZ_256,
  45         .type           = MT_DEVICE,
  46         },
  47         { /* A bunch of peripheral with fine grained IO space */
  48         .virtual        = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_SYS2),
  49         .pfn            = __phys_to_pfn(SAMA5D4_BASE_SYS2),
  50         .length         = SZ_2K,
  51         .type           = MT_DEVICE,
  52         },
  53 };
  54
  55
  56 static void __init sama5d4_map_io(void)
  57 {
  58         iotable_init(at91_io_desc, ARRAY_SIZE(at91_io_desc));
  59         at91_init_sram(0, SAMA5D4_NS_SRAM_BASE, SAMA5D4_NS_SRAM_SIZE);
  60 }
  61
  62 AT91_SOC_START(sama5d4)
  63         .map_io = sama5d4_map_io,
  64 AT91_SOC_END