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         BUG_ON(mvebu_mbus_dt_init());
  91         kirkwood_setup_wins();
  92
  93         kirkwood_l2_init();
  94
  95         kirkwood_cpufreq_init();
  96
  97         /* Setup root of clk tree */
  98         kirkwood_of_clk_init();
  99
 100         kirkwood_cpuidle_init();
 101
 102 #ifdef CONFIG_KEXEC
 103         kexec_reinit = kirkwood_enable_pcie;
 104 #endif
 105
 106         if (of_machine_is_compatible("globalscale,dreamplug"))
 107                 dreamplug_init();
 108
 109         if (of_machine_is_compatible("globalscale,guruplug"))
 110                 guruplug_dt_init();
 111
 112         if (of_machine_is_compatible("globalscale,sheevaplug"))
 113                 sheevaplug_dt_init();
 114
 115         if (of_machine_is_compatible("dlink,dns-kirkwood"))
 116                 dnskw_init();
 117
 118         if (of_machine_is_compatible("iom,iconnect"))
 119                 iconnect_init();
 120
 121         if (of_machine_is_compatible("raidsonic,ib-nas62x0"))
 122                 ib62x0_init();
 123
 124         if (of_machine_is_compatible("qnap,ts219"))
 125                 qnap_dt_ts219_init();
 126
 127         if (of_machine_is_compatible("seagate,dockstar"))
 128                 dockstar_dt_init();
 129
 130         if (of_machine_is_compatible("seagate,goflexnet"))
 131                 goflexnet_init();
 132
 133         if (of_machine_is_compatible("buffalo,lsxl"))
 134                 lsxl_init();
 135
 136         if (of_machine_is_compatible("iom,ix2-200"))
 137                 iomega_ix2_200_init();
 138
 139         if (of_machine_is_compatible("keymile,km_kirkwood"))
 140                 km_kirkwood_init();
 141
 142         if (of_machine_is_compatible("lacie,cloudbox") ||
 143             of_machine_is_compatible("lacie,inetspace_v2") ||
 144             of_machine_is_compatible("lacie,netspace_lite_v2") ||
 145             of_machine_is_compatible("lacie,netspace_max_v2") ||
 146             of_machine_is_compatible("lacie,netspace_mini_v2") ||
 147             of_machine_is_compatible("lacie,netspace_v2"))
 148                 ns2_init();
 149
 150         if (of_machine_is_compatible("marvell,db-88f6281-bp") ||
 151             of_machine_is_compatible("marvell,db-88f6282-bp"))
 152                 db88f628x_init();
 153
 154         if (of_machine_is_compatible("mpl,cec4"))
 155                 mplcec4_init();
 156
 157         if (of_machine_is_compatible("netgear,readynas-duo-v2"))
 158                 netgear_readynas_init();
 159
 160         if (of_machine_is_compatible("plathome,openblocks-a6"))
 161                 openblocks_a6_init();
 162
 163         if (of_machine_is_compatible("usi,topkick"))
 164                 usi_topkick_init();
 165
 166         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 167 }
 168
 169 static const char * const kirkwood_dt_board_compat[] = {
 170         "globalscale,dreamplug",
 171         "globalscale,guruplug",
 172         "globalscale,sheevaplug",
 173         "dlink,dns-320",
 174         "dlink,dns-325",
 175         "iom,iconnect",
 176         "raidsonic,ib-nas62x0",
 177         "qnap,ts219",
 178         "seagate,dockstar",
 179         "seagate,goflexnet",
 180         "buffalo,lsxl",
 181         "iom,ix2-200",
 182         "keymile,km_kirkwood",
 183         "lacie,cloudbox",
 184         "lacie,inetspace_v2",
 185         "lacie,netspace_lite_v2",
 186         "lacie,netspace_max_v2",
 187         "lacie,netspace_mini_v2",
 188         "lacie,netspace_v2",
 189         "marvell,db-88f6281-bp",
 190         "marvell,db-88f6282-bp",
 191         "mpl,cec4",
 192         "netgear,readynas-duo-v2",
 193         "plathome,openblocks-a6",
 194         "usi,topkick",
 195         "zyxel,nsa310",
 196         NULL
 197 };
 198
 199 DT_MACHINE_START(KIRKWOOD_DT, "Marvell Kirkwood (Flattened Device Tree)")
 200         /* Maintainer: Jason Cooper <jason@lakedaemon.net> */
 201         .map_io         = kirkwood_map_io,
 202         .init_early     = kirkwood_init_early,
 203         .init_irq       = orion_dt_init_irq,
 204         .init_time      = kirkwood_timer_init,
 205         .init_machine   = kirkwood_dt_init,
 206         .restart        = kirkwood_restart,
 207         .dt_compat      = kirkwood_dt_board_compat,
 208 MACHINE_END