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/kexec.h>
  19 #include <asm/mach/arch.h>
  20 #include <asm/mach/map.h>
  21 #include <mach/bridge-regs.h>
  22 #include <linux/platform_data/usb-ehci-orion.h>
  23 #include <plat/irq.h>
  24 #include <plat/common.h>
  25 #include "common.h"
  26
  27 /*
  28  * There are still devices that doesn't know about DT yet.  Get clock
  29  * gates here and add a clock lookup alias, so that old platform
  30  * devices still work.
  31 */
  32
  33 static void __init kirkwood_legacy_clk_init(void)
  34 {
  35
  36         struct device_node *np = of_find_compatible_node(
  37                 NULL, NULL, "marvell,kirkwood-gating-clock");
  38         struct of_phandle_args clkspec;
  39         struct clk *clk;
  40
  41         clkspec.np = np;
  42         clkspec.args_count = 1;
  43
  44         clkspec.args[0] = CGC_BIT_PEX0;
  45         orion_clkdev_add("0", "pcie",
  46                          of_clk_get_from_provider(&clkspec));
  47
  48         clkspec.args[0] = CGC_BIT_PEX1;
  49         orion_clkdev_add("1", "pcie",
  50                          of_clk_get_from_provider(&clkspec));
  51
  52         clkspec.args[0] = CGC_BIT_SDIO;
  53         orion_clkdev_add(NULL, "mvsdio",
  54                          of_clk_get_from_provider(&clkspec));
  55
  56         /*
  57          * The ethernet interfaces forget the MAC address assigned by
  58          * u-boot if the clocks are turned off. Until proper DT support
  59          * is available we always enable them for now.
  60          */
  61         clkspec.args[0] = CGC_BIT_GE0;
  62         clk = of_clk_get_from_provider(&clkspec);
  63         orion_clkdev_add(NULL, "mv643xx_eth_port.0", clk);
  64         clk_prepare_enable(clk);
  65
  66         clkspec.args[0] = CGC_BIT_GE1;
  67         clk = of_clk_get_from_provider(&clkspec);
  68         orion_clkdev_add(NULL, "mv643xx_eth_port.1", clk);
  69         clk_prepare_enable(clk);
  70 }
  71
  72 static void __init kirkwood_of_clk_init(void)
  73 {
  74         of_clk_init(NULL);
  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_wins();
  91
  92         kirkwood_l2_init();
  93
  94         kirkwood_cpufreq_init();
  95
  96         /* Setup root of clk tree */
  97         kirkwood_of_clk_init();
  98
  99         kirkwood_cpuidle_init();
 100
 101 #ifdef CONFIG_KEXEC
 102         kexec_reinit = kirkwood_enable_pcie;
 103 #endif
 104
 105         if (of_machine_is_compatible("globalscale,dreamplug"))
 106                 dreamplug_init();
 107
 108         if (of_machine_is_compatible("globalscale,guruplug"))
 109                 guruplug_dt_init();
 110
 111         if (of_machine_is_compatible("globalscale,sheevaplug"))
 112                 sheevaplug_dt_init();
 113
 114         if (of_machine_is_compatible("dlink,dns-kirkwood"))
 115                 dnskw_init();
 116
 117         if (of_machine_is_compatible("iom,iconnect"))
 118                 iconnect_init();
 119
 120         if (of_machine_is_compatible("raidsonic,ib-nas62x0"))
 121                 ib62x0_init();
 122
 123         if (of_machine_is_compatible("qnap,ts219"))
 124                 qnap_dt_ts219_init();
 125
 126         if (of_machine_is_compatible("seagate,dockstar"))
 127                 dockstar_dt_init();
 128
 129         if (of_machine_is_compatible("seagate,goflexnet"))
 130                 goflexnet_init();
 131
 132         if (of_machine_is_compatible("buffalo,lsxl"))
 133                 lsxl_init();
 134
 135         if (of_machine_is_compatible("iom,ix2-200"))
 136                 iomega_ix2_200_init();
 137
 138         if (of_machine_is_compatible("keymile,km_kirkwood"))
 139                 km_kirkwood_init();
 140
 141         if (of_machine_is_compatible("lacie,cloudbox") ||
 142             of_machine_is_compatible("lacie,inetspace_v2") ||
 143             of_machine_is_compatible("lacie,netspace_lite_v2") ||
 144             of_machine_is_compatible("lacie,netspace_max_v2") ||
 145             of_machine_is_compatible("lacie,netspace_mini_v2") ||
 146             of_machine_is_compatible("lacie,netspace_v2"))
 147                 ns2_init();
 148
 149         if (of_machine_is_compatible("marvell,db-88f6281-bp") ||
 150             of_machine_is_compatible("marvell,db-88f6282-bp"))
 151                 db88f628x_init();
 152
 153         if (of_machine_is_compatible("mpl,cec4"))
 154                 mplcec4_init();
 155
 156         if (of_machine_is_compatible("netgear,readynas-duo-v2"))
 157                 netgear_readynas_init();
 158
 159         if (of_machine_is_compatible("plathome,openblocks-a6"))
 160                 openblocks_a6_init();
 161
 162         if (of_machine_is_compatible("usi,topkick"))
 163                 usi_topkick_init();
 164
 165         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 166 }
 167
 168 static const char * const kirkwood_dt_board_compat[] = {
 169         "globalscale,dreamplug",
 170         "globalscale,guruplug",
 171         "globalscale,sheevaplug",
 172         "dlink,dns-320",
 173         "dlink,dns-325",
 174         "iom,iconnect",
 175         "raidsonic,ib-nas62x0",
 176         "qnap,ts219",
 177         "seagate,dockstar",
 178         "seagate,goflexnet",
 179         "buffalo,lsxl",
 180         "iom,ix2-200",
 181         "keymile,km_kirkwood",
 182         "lacie,cloudbox",
 183         "lacie,inetspace_v2",
 184         "lacie,netspace_lite_v2",
 185         "lacie,netspace_max_v2",
 186         "lacie,netspace_mini_v2",
 187         "lacie,netspace_v2",
 188         "marvell,db-88f6281-bp",
 189         "marvell,db-88f6282-bp",
 190         "mpl,cec4",
 191         "netgear,readynas-duo-v2",
 192         "plathome,openblocks-a6",
 193         "usi,topkick",
 194         "zyxel,nsa310",
 195         NULL
 196 };
 197
 198 DT_MACHINE_START(KIRKWOOD_DT, "Marvell Kirkwood (Flattened Device Tree)")
 199         /* Maintainer: Jason Cooper <jason@lakedaemon.net> */
 200         .map_io         = kirkwood_map_io,
 201         .init_early     = kirkwood_init_early,
 202         .init_irq       = orion_dt_init_irq,
 203         .init_time      = kirkwood_timer_init,
 204         .init_machine   = kirkwood_dt_init,
 205         .restart        = kirkwood_restart,
 206         .dt_compat      = kirkwood_dt_board_compat,
 207 MACHINE_END