2 * NVIDIA Tegra SoC device tree board support
4 * Copyright (C) 2011, 2013, NVIDIA Corporation
5 * Copyright (C) 2010 Secret Lab Technologies, Ltd.
6 * Copyright (C) 2010 Google, Inc.
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.
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.
19 #include <linux/clk.h>
20 #include <linux/clk/tegra.h>
21 #include <linux/dma-mapping.h>
22 #include <linux/init.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>
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>
38 #include <soc/tegra/fuse.h>
39 #include <soc/tegra/pmc.h>
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>
58 * Storage for debug-macro.S's state.
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.
64 u32 tegra_uart_config[3] = {
65 /* Debug UART initialization required */
67 /* Debug UART physical address */
69 /* Debug UART virtual address */
73 static void __init tegra_init_early(void)
75 of_register_trusted_foundations();
76 tegra_cpu_reset_handler_init();
79 static void __init tegra_dt_init_irq(void)
85 static void __init tegra_dt_init(void)
87 struct soc_device_attribute *soc_dev_attr;
88 struct soc_device *soc_dev;
89 struct device *parent = NULL;
91 soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
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());
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);
109 parent = soc_device_to_device(soc_dev);
112 * Finished with the static registrations now; fill in the missing
116 of_platform_default_populate(NULL, NULL, parent);
119 static void __init tegra_dt_init_late(void)
121 tegra_init_suspend();
122 tegra_cpuidle_init();
124 if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) &&
125 of_machine_is_compatible("compal,paz00"))
126 tegra_paz00_wifikill_init();
129 static const char * const tegra_dt_board_compat[] = {
137 DT_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,