arch/arm/mach-tegra/tegra.c

   1 /*
   2  * NVIDIA Tegra SoC device tree board support
   3  *
   4  * Copyright (C) 2011, 2013, NVIDIA Corporation
   5  * Copyright (C) 2010 Secret Lab Technologies, Ltd.
   6  * Copyright (C) 2010 Google, Inc.
   7  *
   8  * This software is licensed under the terms of the GNU General Public
   9  * License version 2, as published by the Free Software Foundation, and
  10  * may be copied, distributed, and modified under those terms.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  */
  18
  19 #include <linux/clocksource.h>
  20 #include <linux/kernel.h>
  21 #include <linux/init.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/serial_8250.h>
  24 #include <linux/clk.h>
  25 #include <linux/dma-mapping.h>
  26 #include <linux/irqdomain.h>
  27 #include <linux/of.h>
  28 #include <linux/of_address.h>
  29 #include <linux/of_fdt.h>
  30 #include <linux/of_platform.h>
  31 #include <linux/pda_power.h>
  32 #include <linux/platform_data/tegra_usb.h>
  33 #include <linux/io.h>
  34 #include <linux/slab.h>
  35 #include <linux/sys_soc.h>
  36 #include <linux/usb/tegra_usb_phy.h>
  37 #include <linux/clk/tegra.h>
  38
  39 #include <asm/mach-types.h>
  40 #include <asm/mach/arch.h>
  41 #include <asm/mach/time.h>
  42 #include <asm/setup.h>
  43
  44 #include "board.h"
  45 #include "common.h"
  46 #include "fuse.h"
  47 #include "iomap.h"
  48
  49 static struct tegra_ehci_platform_data tegra_ehci1_pdata = {
  50         .operating_mode = TEGRA_USB_OTG,
  51         .power_down_on_bus_suspend = 1,
  52         .vbus_gpio = -1,
  53 };
  54
  55 static struct tegra_ulpi_config tegra_ehci2_ulpi_phy_config = {
  56         .reset_gpio = -1,
  57         .clk = "cdev2",
  58 };
  59
  60 static struct tegra_ehci_platform_data tegra_ehci2_pdata = {
  61         .phy_config = &tegra_ehci2_ulpi_phy_config,
  62         .operating_mode = TEGRA_USB_HOST,
  63         .power_down_on_bus_suspend = 1,
  64         .vbus_gpio = -1,
  65 };
  66
  67 static struct tegra_ehci_platform_data tegra_ehci3_pdata = {
  68         .operating_mode = TEGRA_USB_HOST,
  69         .power_down_on_bus_suspend = 1,
  70         .vbus_gpio = -1,
  71 };
  72
  73 static struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = {
  74         OF_DEV_AUXDATA("nvidia,tegra20-ehci", 0xC5000000, "tegra-ehci.0",
  75                        &tegra_ehci1_pdata),
  76         OF_DEV_AUXDATA("nvidia,tegra20-ehci", 0xC5004000, "tegra-ehci.1",
  77                        &tegra_ehci2_pdata),
  78         OF_DEV_AUXDATA("nvidia,tegra20-ehci", 0xC5008000, "tegra-ehci.2",
  79                        &tegra_ehci3_pdata),
  80         {}
  81 };
  82
  83 static void __init tegra_dt_init(void)
  84 {
  85         struct soc_device_attribute *soc_dev_attr;
  86         struct soc_device *soc_dev;
  87         struct device *parent = NULL;
  88
  89         tegra_clocks_apply_init_table();
  90
  91         soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
  92         if (!soc_dev_attr)
  93                 goto out;
  94
  95         soc_dev_attr->family = kasprintf(GFP_KERNEL, "Tegra");
  96         soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%d", tegra_revision);
  97         soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%d", tegra_chip_id);
  98
  99         soc_dev = soc_device_register(soc_dev_attr);
 100         if (IS_ERR(soc_dev)) {
 101                 kfree(soc_dev_attr->family);
 102                 kfree(soc_dev_attr->revision);
 103                 kfree(soc_dev_attr->soc_id);
 104                 kfree(soc_dev_attr);
 105                 goto out;
 106         }
 107
 108         parent = soc_device_to_device(soc_dev);
 109
 110         /*
 111          * Finished with the static registrations now; fill in the missing
 112          * devices
 113          */
 114 out:
 115         of_platform_populate(NULL, of_default_bus_match_table,
 116                                 tegra20_auxdata_lookup, parent);
 117 }
 118
 119 static void __init trimslice_init(void)
 120 {
 121 #ifdef CONFIG_TEGRA_PCI
 122         int ret;
 123
 124         ret = tegra_pcie_init(true, true);
 125         if (ret)
 126                 pr_err("tegra_pci_init() failed: %d\n", ret);
 127 #endif
 128 }
 129
 130 static void __init harmony_init(void)
 131 {
 132 #ifdef CONFIG_TEGRA_PCI
 133         int ret;
 134
 135         ret = harmony_pcie_init();
 136         if (ret)
 137                 pr_err("harmony_pcie_init() failed: %d\n", ret);
 138 #endif
 139 }
 140
 141 static void __init paz00_init(void)
 142 {
 143         if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC))
 144                 tegra_paz00_wifikill_init();
 145 }
 146
 147 static struct {
 148         char *machine;
 149         void (*init)(void);
 150 } board_init_funcs[] = {
 151         { "compulab,trimslice", trimslice_init },
 152         { "nvidia,harmony", harmony_init },
 153         { "compal,paz00", paz00_init },
 154 };
 155
 156 static void __init tegra_dt_init_late(void)
 157 {
 158         int i;
 159
 160         tegra_init_late();
 161
 162         for (i = 0; i < ARRAY_SIZE(board_init_funcs); i++) {
 163                 if (of_machine_is_compatible(board_init_funcs[i].machine)) {
 164                         board_init_funcs[i].init();
 165                         break;
 166                 }
 167         }
 168 }
 169
 170 static const char * const tegra_dt_board_compat[] = {
 171         "nvidia,tegra114",
 172         "nvidia,tegra30",
 173         "nvidia,tegra20",
 174         NULL
 175 };
 176
 177 DT_MACHINE_START(TEGRA_DT, "NVIDIA Tegra SoC (Flattened Device Tree)")
 178         .map_io         = tegra_map_common_io,
 179         .smp            = smp_ops(tegra_smp_ops),
 180         .init_early     = tegra_init_early,
 181         .init_irq       = tegra_dt_init_irq,
 182         .init_time      = clocksource_of_init,
 183         .init_machine   = tegra_dt_init,
 184         .init_late      = tegra_dt_init_late,
 185         .restart        = tegra_assert_system_reset,
 186         .dt_compat      = tegra_dt_board_compat,
 187 MACHINE_END