arch/arm/mach-kirkwood/board-dt.c

   1 /*
   2  * Copyright 2012 (C), Jason Cooper <jason@lakedaemon.net>
   3  *
   4  * arch/arm/mach-kirkwood/board-dt.c
   5  *
   6  * Flattened Device Tree board initialization
   7  *
   8  * This file is licensed under the terms of the GNU General Public
   9  * License version 2.  This program is licensed "as is" without any
  10  * warranty of any kind, whether express or implied.
  11  */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/of.h>
  16 #include <linux/of_platform.h>
  17 #include <linux/clk-provider.h>
  18 #include <linux/clk/mvebu.h>
  19 #include <linux/kexec.h>
  20 #include <asm/mach/arch.h>
  21 #include <asm/mach/map.h>
  22 #include <mach/bridge-regs.h>
  23 #include <linux/platform_data/usb-ehci-orion.h>
  24 #include <plat/irq.h>
  25 #include <plat/common.h>
  26 #include "common.h"
  27
  28 static struct of_device_id kirkwood_dt_match_table[] __initdata = {
  29         { .compatible = "simple-bus", },
  30         { }
  31 };
  32
  33 /*
  34  * There are still devices that doesn't know about DT yet.  Get clock
  35  * gates here and add a clock lookup alias, so that old platform
  36  * devices still work.
  37 */
  38
  39 static void __init kirkwood_legacy_clk_init(void)
  40 {
  41
  42         struct device_node *np = of_find_compatible_node(
  43                 NULL, NULL, "marvell,kirkwood-gating-clock");
  44
  45         struct of_phandle_args clkspec;
  46
  47         clkspec.np = np;
  48         clkspec.args_count = 1;
  49
  50         clkspec.args[0] = CGC_BIT_GE0;
  51         orion_clkdev_add(NULL, "mv643xx_eth_port.0",
  52                          of_clk_get_from_provider(&clkspec));
  53
  54         clkspec.args[0] = CGC_BIT_PEX0;
  55         orion_clkdev_add("0", "pcie",
  56                          of_clk_get_from_provider(&clkspec));
  57
  58         clkspec.args[0] = CGC_BIT_USB0;
  59         orion_clkdev_add(NULL, "orion-ehci.0",
  60                          of_clk_get_from_provider(&clkspec));
  61
  62         clkspec.args[0] = CGC_BIT_PEX1;
  63         orion_clkdev_add("1", "pcie",
  64                          of_clk_get_from_provider(&clkspec));
  65
  66         clkspec.args[0] = CGC_BIT_GE1;
  67         orion_clkdev_add(NULL, "mv643xx_eth_port.1",
  68                          of_clk_get_from_provider(&clkspec));
  69
  70 }
  71
  72 static void __init kirkwood_of_clk_init(void)
  73 {
  74         mvebu_clocks_init();
  75         kirkwood_legacy_clk_init();
  76 }
  77
  78 static void __init kirkwood_dt_init(void)
  79 {
  80         pr_info("Kirkwood: %s, TCLK=%d.\n", kirkwood_id(), kirkwood_tclk);
  81
  82         /*
  83          * Disable propagation of mbus errors to the CPU local bus,
  84          * as this causes mbus errors (which can occur for example
  85          * for PCI aborts) to throw CPU aborts, which we're not set
  86          * up to deal with.
  87          */
  88         writel(readl(CPU_CONFIG) & ~CPU_CONFIG_ERROR_PROP, CPU_CONFIG);
  89
  90         kirkwood_setup_cpu_mbus();
  91
  92         kirkwood_l2_init();
  93
  94         /* Setup root of clk tree */
  95         kirkwood_of_clk_init();
  96
  97 #ifdef CONFIG_KEXEC
  98         kexec_reinit = kirkwood_enable_pcie;
  99 #endif
 100
 101         if (of_machine_is_compatible("globalscale,dreamplug"))
 102                 dreamplug_init();
 103
 104         if (of_machine_is_compatible("dlink,dns-kirkwood"))
 105                 dnskw_init();
 106
 107         if (of_machine_is_compatible("iom,iconnect"))
 108                 iconnect_init();
 109
 110         if (of_machine_is_compatible("raidsonic,ib-nas62x0"))
 111                 ib62x0_init();
 112
 113         if (of_machine_is_compatible("qnap,ts219"))
 114                 qnap_dt_ts219_init();
 115
 116         if (of_machine_is_compatible("seagate,dockstar"))
 117                 dockstar_dt_init();
 118
 119         if (of_machine_is_compatible("seagate,goflexnet"))
 120                 goflexnet_init();
 121
 122         if (of_machine_is_compatible("buffalo,lsxl"))
 123                 lsxl_init();
 124
 125         if (of_machine_is_compatible("iom,ix2-200"))
 126                 iomega_ix2_200_init();
 127
 128         if (of_machine_is_compatible("keymile,km_kirkwood"))
 129                 km_kirkwood_init();
 130
 131         if (of_machine_is_compatible("lacie,inetspace_v2") ||
 132             of_machine_is_compatible("lacie,netspace_v2") ||
 133             of_machine_is_compatible("lacie,netspace_max_v2") ||
 134             of_machine_is_compatible("lacie,netspace_lite_v2") ||
 135             of_machine_is_compatible("lacie,netspace_mini_v2"))
 136                 ns2_init();
 137
 138         if (of_machine_is_compatible("mpl,cec4"))
 139                 mplcec4_init();
 140
 141         if (of_machine_is_compatible("plathome,openblocks-a6"))
 142                 openblocks_a6_init();
 143
 144         if (of_machine_is_compatible("usi,topkick"))
 145                 usi_topkick_init();
 146
 147         if (of_machine_is_compatible("zyxel,nsa310"))
 148                 nsa310_init();
 149
 150         of_platform_populate(NULL, kirkwood_dt_match_table, NULL, NULL);
 151 }
 152
 153 static const char * const kirkwood_dt_board_compat[] = {
 154         "globalscale,dreamplug",
 155         "dlink,dns-320",
 156         "dlink,dns-325",
 157         "iom,iconnect",
 158         "raidsonic,ib-nas62x0",
 159         "qnap,ts219",
 160         "seagate,dockstar",
 161         "seagate,goflexnet",
 162         "buffalo,lsxl",
 163         "iom,ix2-200",
 164         "keymile,km_kirkwood",
 165         "lacie,inetspace_v2",
 166         "lacie,netspace_max_v2",
 167         "lacie,netspace_v2",
 168         "lacie,netspace_lite_v2",
 169         "lacie,netspace_mini_v2",
 170         "mpl,cec4",
 171         "plathome,openblocks-a6",
 172         "usi,topkick",
 173         "zyxel,nsa310",
 174         NULL
 175 };
 176
 177 DT_MACHINE_START(KIRKWOOD_DT, "Marvell Kirkwood (Flattened Device Tree)")
 178         /* Maintainer: Jason Cooper <jason@lakedaemon.net> */
 179         .map_io         = kirkwood_map_io,
 180         .init_early     = kirkwood_init_early,
 181         .init_irq       = orion_dt_init_irq,
 182         .init_time      = kirkwood_timer_init,
 183         .init_machine   = kirkwood_dt_init,
 184         .restart        = kirkwood_restart,
 185         .dt_compat      = kirkwood_dt_board_compat,
 186 MACHINE_END