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/kernel.h> 20 #include <linux/init.h> 21 #include <linux/platform_device.h> 22 #include <linux/serial_8250.h> 23 #include <linux/clk.h> 24 #include <linux/dma-mapping.h> 25 #include <linux/irqdomain.h> 26 #include <linux/of.h> 27 #include <linux/of_address.h> 28 #include <linux/of_fdt.h> 29 #include <linux/of_platform.h> 30 #include <linux/pda_power.h> 31 #include <linux/io.h> 32 #include <linux/slab.h> 33 #include <linux/sys_soc.h> 34 #include <linux/usb/tegra_usb_phy.h> 35 #include <linux/clk/tegra.h> 36 37 #include <asm/mach-types.h> 38 #include <asm/mach/arch.h> 39 #include <asm/mach/time.h> 40 #include <asm/setup.h> 41 42 #include "board.h" 43 #include "common.h" 44 #include "fuse.h" 45 #include "iomap.h" 46 #include "pmc.h" 47 48 static void __init tegra_dt_init(void) 49 { 50 struct soc_device_attribute *soc_dev_attr; 51 struct soc_device *soc_dev; 52 struct device *parent = NULL; 53 54 tegra_pmc_init(); 55 56 tegra_clocks_apply_init_table(); 57 58 soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); 59 if (!soc_dev_attr) 60 goto out; 61 62 soc_dev_attr->family = kasprintf(GFP_KERNEL, "Tegra"); 63 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%d", tegra_revision); 64 soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%d", tegra_chip_id); 65 66 soc_dev = soc_device_register(soc_dev_attr); 67 if (IS_ERR(soc_dev)) { 68 kfree(soc_dev_attr->family); 69 kfree(soc_dev_attr->revision); 70 kfree(soc_dev_attr->soc_id); 71 kfree(soc_dev_attr); 72 goto out; 73 } 74 75 parent = soc_device_to_device(soc_dev); 76 77 /* 78 * Finished with the static registrations now; fill in the missing 79 * devices 80 */ 81 out: 82 of_platform_populate(NULL, of_default_bus_match_table, NULL, parent); 83 } 84 85 static void __init paz00_init(void) 86 { 87 if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC)) 88 tegra_paz00_wifikill_init(); 89 } 90 91 static struct { 92 char *machine; 93 void (*init)(void); 94 } board_init_funcs[] = { 95 { "compal,paz00", paz00_init }, 96 }; 97 98 static void __init tegra_dt_init_late(void) 99 { 100 int i; 101 102 tegra_init_late(); 103 104 for (i = 0; i < ARRAY_SIZE(board_init_funcs); i++) { 105 if (of_machine_is_compatible(board_init_funcs[i].machine)) { 106 board_init_funcs[i].init(); 107 break; 108 } 109 } 110 } 111 112 static const char * const tegra_dt_board_compat[] = { 113 "nvidia,tegra114", 114 "nvidia,tegra30", 115 "nvidia,tegra20", 116 NULL 117 }; 118 119 DT_MACHINE_START(TEGRA_DT, "NVIDIA Tegra SoC (Flattened Device Tree)") 120 .map_io = tegra_map_common_io, 121 .smp = smp_ops(tegra_smp_ops), 122 .init_early = tegra_init_early, 123 .init_irq = tegra_dt_init_irq, 124 .init_machine = tegra_dt_init, 125 .init_late = tegra_dt_init_late, 126 .restart = tegra_assert_system_reset, 127 .dt_compat = tegra_dt_board_compat, 128 MACHINE_END 129