arch/arm/mach-omap2/board-generic.c

   1 /*
   2  * Copyright (C) 2005 Nokia Corporation
   3  * Author: Paul Mundt <paul.mundt@nokia.com>
   4  *
   5  * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
   6  *
   7  * Modified from the original mach-omap/omap2/board-generic.c did by Paul
   8  * to support the OMAP2+ device tree boards with an unique board file.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14 #include <linux/io.h>
  15 #include <linux/of_irq.h>
  16 #include <linux/of_platform.h>
  17 #include <linux/irqdomain.h>
  18 #include <linux/clk.h>
  19 #include <linux/string.h>
  20 #include <linux/slab.h>
  21
  22 #include <asm/hardware/gic.h>
  23 #include <asm/mach/arch.h>
  24
  25 #include <plat/sata.h>
  26
  27 #include "common.h"
  28 #include "common-board-devices.h"
  29 #include "dss-common.h"
  30
  31 #if !(defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3))
  32 #define intc_of_init    NULL
  33 #endif
  34 #ifndef CONFIG_ARCH_OMAP4
  35 #define gic_of_init             NULL
  36 #endif
  37
  38 static struct of_device_id omap_dt_match_table[] __initdata = {
  39         { .compatible = "simple-bus", },
  40         { .compatible = "ti,omap-infra", },
  41         { }
  42 };
  43
  44 static int __init omap_create_clk_alias(struct device_node *np)
  45 {
  46         int ret = 0;
  47         const char *s, *alias;
  48         char *clk_id;
  49         struct device_node *dev_np;
  50         struct platform_device *pdev;
  51
  52         of_property_read_string(np, "clock-name", &s);
  53         if (!s) {
  54                 pr_err("%s: couldn't find clock-name property in node %s\n",
  55                                 __func__, np->name);
  56                 return -ENODEV;
  57         }
  58
  59         clk_id = kstrdup(s, GFP_KERNEL);
  60         if (!clk_id)
  61                 return -ENOMEM;
  62
  63         dev_np = of_parse_phandle(np, "device", 0);
  64         if (!dev_np) {
  65                 pr_err("%s: couldn't find device phandle for \'%s\'\n",
  66                                 __func__, clk_id);
  67                 ret = -ENODEV;
  68                 goto exit;
  69         }
  70
  71         pdev = of_find_device_by_node(dev_np);
  72         if (!pdev) {
  73                 pr_err("%s: couldn't find device for clock \'%s\'\n",
  74                                 __func__, clk_id);
  75                 ret = -ENODEV;
  76                 goto exit;
  77         }
  78
  79         ret = of_property_read_string(np, "clock-alias", &alias);
  80         if (ret) {
  81                 pr_err("%s: couldn't find alias for clock \'%s\'\n",
  82                                 __func__, clk_id);
  83                 ret = -ENODEV;
  84                 goto exit;
  85         }
  86
  87         ret = clk_add_alias(alias, dev_name(&pdev->dev), clk_id, NULL);
  88         if (ret) {
  89                 pr_err("%s: couldn't add alias \'%s\' to clock \'%s\'\n",
  90                                 __func__, alias, clk_id);
  91                 ret = -ENODEV;
  92                 goto exit;
  93         }
  94
  95 exit:
  96         kfree(clk_id);
  97         return ret;
  98 }
  99
 100 static void __init omap_generic_init(void)
 101 {
 102         struct device_node *np;
 103
 104         omap_sdrc_init(NULL, NULL);
 105
 106         of_platform_populate(NULL, omap_dt_match_table, NULL, NULL);
 107
 108         omapdss_init_of();
 109
 110         /* create clock aliases based on 'clock_alias' nodes */
 111         for_each_node_by_name(np, "clock_alias") {
 112                 omap_create_clk_alias(np);
 113                 of_node_put(np);
 114         }
 115
 116         if (of_machine_is_compatible("ti,omap5"))
 117                 omap_sata_init();
 118 }
 119
 120 #ifdef CONFIG_SOC_OMAP2420
 121 static const char *omap242x_boards_compat[] __initdata = {
 122         "ti,omap2420",
 123         NULL,
 124 };
 125
 126 DT_MACHINE_START(OMAP242X_DT, "Generic OMAP2420 (Flattened Device Tree)")
 127         .reserve        = omap_reserve,
 128         .map_io         = omap242x_map_io,
 129         .init_early     = omap2420_init_early,
 130         .init_irq       = omap_intc_of_init,
 131         .handle_irq     = omap2_intc_handle_irq,
 132         .init_machine   = omap_generic_init,
 133         .timer          = &omap2_timer,
 134         .dt_compat      = omap242x_boards_compat,
 135         .restart        = omap2xxx_restart,
 136 MACHINE_END
 137 #endif
 138
 139 #ifdef CONFIG_SOC_OMAP2430
 140 static const char *omap243x_boards_compat[] __initdata = {
 141         "ti,omap2430",
 142         NULL,
 143 };
 144
 145 DT_MACHINE_START(OMAP243X_DT, "Generic OMAP2430 (Flattened Device Tree)")
 146         .reserve        = omap_reserve,
 147         .map_io         = omap243x_map_io,
 148         .init_early     = omap2430_init_early,
 149         .init_irq       = omap_intc_of_init,
 150         .handle_irq     = omap2_intc_handle_irq,
 151         .init_machine   = omap_generic_init,
 152         .timer          = &omap2_timer,
 153         .dt_compat      = omap243x_boards_compat,
 154         .restart        = omap2xxx_restart,
 155 MACHINE_END
 156 #endif
 157
 158 #ifdef CONFIG_ARCH_OMAP3
 159 static const char *omap3_boards_compat[] __initdata = {
 160         "ti,omap3",
 161         NULL,
 162 };
 163
 164 DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)")
 165         .reserve        = omap_reserve,
 166         .map_io         = omap3_map_io,
 167         .init_early     = omap3430_init_early,
 168         .init_irq       = omap_intc_of_init,
 169         .handle_irq     = omap3_intc_handle_irq,
 170         .init_machine   = omap_generic_init,
 171         .init_late      = omap3_init_late,
 172         .timer          = &omap3_timer,
 173         .dt_compat      = omap3_boards_compat,
 174         .restart        = omap3xxx_restart,
 175 MACHINE_END
 176
 177 static const char *omap3_gp_boards_compat[] __initdata = {
 178         "ti,omap3-beagle",
 179         NULL,
 180 };
 181
 182 DT_MACHINE_START(OMAP3_GP_DT, "Generic OMAP3-GP (Flattened Device Tree)")
 183         .reserve        = omap_reserve,
 184         .map_io         = omap3_map_io,
 185         .init_early     = omap3430_init_early,
 186         .init_irq       = omap_intc_of_init,
 187         .handle_irq     = omap3_intc_handle_irq,
 188         .init_machine   = omap_generic_init,
 189         .init_late      = omap3_init_late,
 190         .timer          = &omap3_secure_timer,
 191         .dt_compat      = omap3_gp_boards_compat,
 192         .restart        = omap3xxx_restart,
 193 MACHINE_END
 194 #endif
 195
 196 #ifdef CONFIG_SOC_AM33XX
 197 static const char *am33xx_boards_compat[] __initdata = {
 198         "ti,am33xx",
 199         NULL,
 200 };
 201
 202 DT_MACHINE_START(AM33XX_DT, "Generic AM33XX (Flattened Device Tree)")
 203         .reserve        = omap_reserve,
 204         .map_io         = am33xx_map_io,
 205         .init_early     = am33xx_init_early,
 206         .init_late      = am33xx_init_late,
 207         .init_irq       = omap_intc_of_init,
 208         .handle_irq     = omap3_intc_handle_irq,
 209         .init_machine   = omap_generic_init,
 210         .timer          = &omap3_am33xx_timer,
 211         .dt_compat      = am33xx_boards_compat,
 212         .restart        = am33xx_restart,
 213 MACHINE_END
 214 #endif
 215
 216 #ifdef CONFIG_ARCH_OMAP4
 217 static const char *omap4_boards_compat[] __initdata = {
 218         "ti,omap4",
 219         NULL,
 220 };
 221
 222 DT_MACHINE_START(OMAP4_DT, "Generic OMAP4 (Flattened Device Tree)")
 223         .reserve        = omap_reserve,
 224         .smp            = smp_ops(omap4_smp_ops),
 225         .map_io         = omap4_map_io,
 226         .init_early     = omap4430_init_early,
 227         .init_irq       = omap_gic_of_init,
 228         .handle_irq     = gic_handle_irq,
 229         .init_machine   = omap_generic_init,
 230         .init_late      = omap4430_init_late,
 231         .timer          = &omap4_timer,
 232         .dt_compat      = omap4_boards_compat,
 233         .restart        = omap44xx_restart,
 234 MACHINE_END
 235 #endif
 236
 237 #ifdef CONFIG_SOC_OMAP5
 238 static const char *omap5_boards_compat[] __initdata = {
 239         "ti,omap5",
 240         NULL,
 241 };
 242
 243 DT_MACHINE_START(OMAP5_DT, "Generic OMAP5 (Flattened Device Tree)")
 244         .reserve        = omap_reserve,
 245         .smp            = smp_ops(omap4_smp_ops),
 246         .map_io         = omap5_map_io,
 247         .init_early     = omap5_init_early,
 248         .init_irq       = omap_gic_of_init,
 249         .handle_irq     = gic_handle_irq,
 250         .init_machine   = omap_generic_init,
 251         .init_late      = omap5_init_late,
 252         .timer          = &omap5_timer,
 253         .dt_compat      = omap5_boards_compat,
 254         .restart        = omap44xx_restart,
 255 MACHINE_END
 256 #endif