arch/arm/mach-tegra/tegra.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * NVIDIA Tegra SoC device tree board support
   4  *
   5  * Copyright (C) 2011, 2013, NVIDIA Corporation
   6  * Copyright (C) 2010 Secret Lab Technologies, Ltd.
   7  * Copyright (C) 2010 Google, Inc.
   8  */
   9
  10 #include <linux/clk.h>
  11 #include <linux/clk/tegra.h>
  12 #include <linux/dma-mapping.h>
  13 #include <linux/init.h>
  14 #include <linux/io.h>
  15 #include <linux/irqchip.h>
  16 #include <linux/irqdomain.h>
  17 #include <linux/kernel.h>
  18 #include <linux/of_address.h>
  19 #include <linux/of_fdt.h>
  20 #include <linux/of.h>
  21 #include <linux/of_platform.h>
  22 #include <linux/pda_power.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/serial_8250.h>
  25 #include <linux/slab.h>
  26 #include <linux/sys_soc.h>
  27 #include <linux/usb/tegra_usb_phy.h>
  28
  29 #include <linux/firmware/trusted_foundations.h>
  30
  31 #include <soc/tegra/fuse.h>
  32 #include <soc/tegra/pmc.h>
  33
  34 #include <asm/firmware.h>
  35 #include <asm/hardware/cache-l2x0.h>
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/time.h>
  38 #include <asm/mach-types.h>
  39 #include <asm/setup.h>
  40
  41 #include "board.h"
  42 #include "common.h"
  43 #include "cpuidle.h"
  44 #include "iomap.h"
  45 #include "irq.h"
  46 #include "pm.h"
  47 #include "reset.h"
  48 #include "sleep.h"
  49
  50 /*
  51  * Storage for debug-macro.S's state.
  52  *
  53  * This must be in .data not .bss so that it gets initialized each time the
  54  * kernel is loaded. The data is declared here rather than debug-macro.S so
  55  * that multiple inclusions of debug-macro.S point at the same data.
  56  */
  57 u32 tegra_uart_config[3] = {
  58         /* Debug UART initialization required */
  59         1,
  60         /* Debug UART physical address */
  61         0,
  62         /* Debug UART virtual address */
  63         0,
  64 };
  65
  66 static void __init tegra_init_early(void)
  67 {
  68         of_register_trusted_foundations();
  69         tegra_cpu_reset_handler_init();
  70         call_firmware_op(l2x0_init);
  71 }
  72
  73 static void __init tegra_dt_init_irq(void)
  74 {
  75         tegra_init_irq();
  76         irqchip_init();
  77 }
  78
  79 static void __init tegra_dt_init(void)
  80 {
  81         struct device *parent = tegra_soc_device_register();
  82
  83         of_platform_default_populate(NULL, NULL, parent);
  84 }
  85
  86 static void __init tegra_dt_init_late(void)
  87 {
  88         tegra_init_suspend();
  89         tegra_cpuidle_init();
  90
  91         if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) &&
  92             of_machine_is_compatible("compal,paz00"))
  93                 tegra_paz00_wifikill_init();
  94
  95         if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) &&
  96             of_machine_is_compatible("nvidia,tegra20"))
  97                 platform_device_register_simple("tegra20-cpufreq", -1, NULL, 0);
  98 }
  99
 100 static const char * const tegra_dt_board_compat[] = {
 101         "nvidia,tegra124",
 102         "nvidia,tegra114",
 103         "nvidia,tegra30",
 104         "nvidia,tegra20",
 105         NULL
 106 };
 107
 108 DT_MACHINE_START(TEGRA_DT, "NVIDIA Tegra SoC (Flattened Device Tree)")
 109         .l2c_aux_val    = 0x3c400001,
 110         .l2c_aux_mask   = 0xc20fc3fe,
 111         .smp            = smp_ops(tegra_smp_ops),
 112         .map_io         = tegra_map_common_io,
 113         .init_early     = tegra_init_early,
 114         .init_irq       = tegra_dt_init_irq,
 115         .init_machine   = tegra_dt_init,
 116         .init_late      = tegra_dt_init_late,
 117         .dt_compat      = tegra_dt_board_compat,
 118 MACHINE_END