LXR linux/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/clk.h>
  20#include <linux/clk/tegra.h>
  21#include <linux/dma-mapping.h>
  22#include <linux/init.h>
  23#include <linux/io.h>
  24#include <linux/irqchip.h>
  25#include <linux/irqdomain.h>
  26#include <linux/kernel.h>
  27#include <linux/of_address.h>
  28#include <linux/of_fdt.h>
  29#include <linux/of.h>
  30#include <linux/of_platform.h>
  31#include <linux/pda_power.h>
  32#include <linux/platform_device.h>
  33#include <linux/serial_8250.h>
  34#include <linux/slab.h>
  35#include <linux/sys_soc.h>
  36#include <linux/usb/tegra_usb_phy.h>
  37
  38#include <soc/tegra/fuse.h>
  39#include <soc/tegra/pmc.h>
  40
  41#include <asm/hardware/cache-l2x0.h>
  42#include <asm/mach/arch.h>
  43#include <asm/mach/time.h>
  44#include <asm/mach-types.h>
  45#include <asm/setup.h>
  46#include <asm/trusted_foundations.h>
  47
  48#include "board.h"
  49#include "common.h"
  50#include "cpuidle.h"
  51#include "iomap.h"
  52#include "irq.h"
  53#include "pm.h"
  54#include "reset.h"
  55#include "sleep.h"
  56
  57/*
  58 * Storage for debug-macro.S's state.
  59 *
  60 * This must be in .data not .bss so that it gets initialized each time the
  61 * kernel is loaded. The data is declared here rather than debug-macro.S so
  62 * that multiple inclusions of debug-macro.S point at the same data.
  63 */
  64u32 tegra_uart_config[3] = {
  65        /* Debug UART initialization required */
  66        1,
  67        /* Debug UART physical address */
  68        0,
  69        /* Debug UART virtual address */
  70        0,
  71};
  72
  73static void __init tegra_init_early(void)
  74{
  75        of_register_trusted_foundations();
  76        tegra_cpu_reset_handler_init();
  77}
  78
  79static void __init tegra_dt_init_irq(void)
  80{
  81        tegra_init_irq();
  82        irqchip_init();
  83}
  84
  85static void __init tegra_dt_init(void)
  86{
  87        struct soc_device_attribute *soc_dev_attr;
  88        struct soc_device *soc_dev;
  89        struct device *parent = NULL;
  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",
  97                                           tegra_sku_info.revision);
  98        soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%u", tegra_get_chip_id());
  99
 100        soc_dev = soc_device_register(soc_dev_attr);
 101        if (IS_ERR(soc_dev)) {
 102                kfree(soc_dev_attr->family);
 103                kfree(soc_dev_attr->revision);
 104                kfree(soc_dev_attr->soc_id);
 105                kfree(soc_dev_attr);
 106                goto out;
 107        }
 108
 109        parent = soc_device_to_device(soc_dev);
 110
 111        /*
 112         * Finished with the static registrations now; fill in the missing
 113         * devices
 114         */
 115out:
 116        of_platform_default_populate(NULL, NULL, parent);
 117}
 118
 119static void __init tegra_dt_init_late(void)
 120{
 121        tegra_init_suspend();
 122        tegra_cpuidle_init();
 123
 124        if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) &&
 125            of_machine_is_compatible("compal,paz00"))
 126                tegra_paz00_wifikill_init();
 127}
 128
 129static const char * const tegra_dt_board_compat[] = {
 130        "nvidia,tegra124",
 131        "nvidia,tegra114",
 132        "nvidia,tegra30",
 133        "nvidia,tegra20",
 134        NULL
 135};
 136
 137DT_MACHINE_START(TEGRA_DT, "NVIDIA Tegra SoC (Flattened Device Tree)")
 138        .l2c_aux_val    = 0x3c400001,
 139        .l2c_aux_mask   = 0xc20fc3fe,
 140        .smp            = smp_ops(tegra_smp_ops),
 141        .map_io         = tegra_map_common_io,
 142        .init_early     = tegra_init_early,
 143        .init_irq       = tegra_dt_init_irq,
 144        .init_machine   = tegra_dt_init,
 145        .init_late      = tegra_dt_init_late,
 146        .dt_compat      = tegra_dt_board_compat,
 147MACHINE_END
 148