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/psci.h> 40 #include <asm/setup.h> 41 42 #include "board.h" 43 #include "common.h" 44 #include "iomap.h" 45 #include "pm.h" 46 #include "reset.h" 47 #include "sleep.h" 48 49 /* 50 * Storage for debug-macro.S's state. 51 * 52 * This must be in .data not .bss so that it gets initialized each time the 53 * kernel is loaded. The data is declared here rather than debug-macro.S so 54 * that multiple inclusions of debug-macro.S point at the same data. 55 */ 56 u32 tegra_uart_config[3] = { 57 /* Debug UART initialization required */ 58 1, 59 /* Debug UART physical address */ 60 0, 61 /* Debug UART virtual address */ 62 0, 63 }; 64 65 static void __init tegra_init_early(void) 66 { 67 of_register_trusted_foundations(); 68 tegra_cpu_reset_handler_init(); 69 call_firmware_op(l2x0_init); 70 } 71 72 static void __init tegra_dt_init_irq(void) 73 { 74 tegra_init_irq(); 75 irqchip_init(); 76 } 77 78 static void __init tegra_dt_init(void) 79 { 80 struct device *parent = tegra_soc_device_register(); 81 82 of_platform_default_populate(NULL, NULL, parent); 83 } 84 85 static void __init tegra_dt_init_late(void) 86 { 87 if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) && 88 of_machine_is_compatible("compal,paz00")) 89 tegra_paz00_wifikill_init(); 90 91 if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) && 92 of_machine_is_compatible("nvidia,tegra20")) 93 platform_device_register_simple("tegra20-cpufreq", -1, NULL, 0); 94 95 if (IS_ENABLED(CONFIG_ARM_TEGRA_CPUIDLE) && !psci_smp_available()) 96 platform_device_register_simple("tegra-cpuidle", -1, NULL, 0); 97 98 if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC) && 99 of_machine_is_compatible("nvidia,tegra30")) 100 platform_device_register_simple("tegra20-cpufreq", -1, NULL, 0); 101 } 102 103 static const char * const tegra_dt_board_compat[] = { 104 "nvidia,tegra124", 105 "nvidia,tegra114", 106 "nvidia,tegra30", 107 "nvidia,tegra20", 108 NULL 109 }; 110 111 DT_MACHINE_START(TEGRA_DT, "NVIDIA Tegra SoC (Flattened Device Tree)") 112 .l2c_aux_val = 0x3c400000, 113 .l2c_aux_mask = 0xc20fc3ff, 114 .smp = smp_ops(tegra_smp_ops), 115 .map_io = tegra_map_common_io, 116 .init_early = tegra_init_early, 117 .init_irq = tegra_dt_init_irq, 118 .init_machine = tegra_dt_init, 119 .init_late = tegra_dt_init_late, 120 .dt_compat = tegra_dt_board_compat, 121 MACHINE_END 122