arch/powerpc/platforms/44x/sam440ep.c

   1 /*
   2  * Sam440ep board specific routines based off bamboo.c code
   3  * original copyrights below
   4  *
   5  * Wade Farnsworth <wfarnsworth@mvista.com>
   6  * Copyright 2004 MontaVista Software Inc.
   7  *
   8  * Rewritten and ported to the merged powerpc tree:
   9  * Josh Boyer <jwboyer@linux.vnet.ibm.com>
  10  * Copyright 2007 IBM Corporation
  11  *
  12  * Modified from bamboo.c for sam440ep:
  13  * Copyright 2008 Giuseppe Coviello <gicoviello@gmail.com>
  14  *
  15  * This program is free software; you can redistribute  it and/or modify it
  16  * under  the terms of  the GNU General  Public License as published by the
  17  * Free Software Foundation;  either version 2 of the  License, or (at your
  18  * option) any later version.
  19  */
  20 #include <linux/init.h>
  21 #include <linux/of_platform.h>
  22
  23 #include <asm/machdep.h>
  24 #include <asm/prom.h>
  25 #include <asm/udbg.h>
  26 #include <asm/time.h>
  27 #include <asm/uic.h>
  28 #include <asm/pci-bridge.h>
  29 #include <asm/ppc4xx.h>
  30 #include <linux/i2c.h>
  31
  32 static __initdata struct of_device_id sam440ep_of_bus[] = {
  33         { .compatible = "ibm,plb4", },
  34         { .compatible = "ibm,opb", },
  35         { .compatible = "ibm,ebc", },
  36         {},
  37 };
  38
  39 static int __init sam440ep_device_probe(void)
  40 {
  41         of_platform_bus_probe(NULL, sam440ep_of_bus, NULL);
  42
  43         return 0;
  44 }
  45 machine_device_initcall(sam440ep, sam440ep_device_probe);
  46
  47 static int __init sam440ep_probe(void)
  48 {
  49         unsigned long root = of_get_flat_dt_root();
  50
  51         if (!of_flat_dt_is_compatible(root, "acube,sam440ep"))
  52                 return 0;
  53
  54         ppc_pci_flags = PPC_PCI_REASSIGN_ALL_RSRC;
  55
  56         return 1;
  57 }
  58
  59 define_machine(sam440ep) {
  60         .name                   = "Sam440ep",
  61         .probe                  = sam440ep_probe,
  62         .progress               = udbg_progress,
  63         .init_IRQ               = uic_init_tree,
  64         .get_irq                = uic_get_irq,
  65         .restart                = ppc4xx_reset_system,
  66         .calibrate_decr         = generic_calibrate_decr,
  67 };
  68
  69 static struct i2c_board_info sam440ep_rtc_info = {
  70         .type = "m41st85",
  71         .addr = 0x68,
  72         .irq = -1,
  73 };
  74
  75 static int sam440ep_setup_rtc(void)
  76 {
  77         return i2c_register_board_info(0, &sam440ep_rtc_info, 1);
  78 }
  79 machine_device_initcall(sam440ep, sam440ep_setup_rtc);