2 * nVidia Tegra device tree board support
4 * Copyright (C) 2010 Secret Lab Technologies, Ltd.
5 * Copyright (C) 2010 Google, Inc.
7 * This software is licensed under the terms of the GNU General Public
8 * License version 2, as published by the Free Software Foundation, and
9 * may be copied, distributed, and modified under those terms.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
18 #include <linux/kernel.h>
19 #include <linux/init.h>
20 #include <linux/platform_device.h>
21 #include <linux/serial_8250.h>
22 #include <linux/clk.h>
23 #include <linux/dma-mapping.h>
24 #include <linux/irqdomain.h>
26 #include <linux/of_address.h>
27 #include <linux/of_fdt.h>
28 #include <linux/of_irq.h>
29 #include <linux/of_platform.h>
30 #include <linux/pda_power.h>
32 #include <linux/i2c.h>
33 #include <linux/i2c-tegra.h>
35 #include <asm/hardware/gic.h>
36 #include <asm/mach-types.h>
37 #include <asm/mach/arch.h>
38 #include <asm/mach/time.h>
39 #include <asm/setup.h>
41 #include <mach/iomap.h>
42 #include <mach/irqs.h>
49 struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = {
50 OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC1_BASE, "sdhci-tegra.0", NULL),
51 OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC2_BASE, "sdhci-tegra.1", NULL),
52 OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC3_BASE, "sdhci-tegra.2", NULL),
53 OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC4_BASE, "sdhci-tegra.3", NULL),
54 OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C_BASE, "tegra-i2c.0", NULL),
55 OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C2_BASE, "tegra-i2c.1", NULL),
56 OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C3_BASE, "tegra-i2c.2", NULL),
57 OF_DEV_AUXDATA("nvidia,tegra20-i2c-dvc", TEGRA_DVC_BASE, "tegra-i2c.3", NULL),
58 OF_DEV_AUXDATA("nvidia,tegra20-i2s", TEGRA_I2S1_BASE, "tegra20-i2s.0", NULL),
59 OF_DEV_AUXDATA("nvidia,tegra20-i2s", TEGRA_I2S2_BASE, "tegra20-i2s.1", NULL),
60 OF_DEV_AUXDATA("nvidia,tegra20-das", TEGRA_APB_MISC_DAS_BASE, "tegra20-das", NULL),
61 OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB_BASE, "tegra-ehci.0",
63 OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB2_BASE, "tegra-ehci.1",
65 OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB3_BASE, "tegra-ehci.2",
67 OF_DEV_AUXDATA("nvidia,tegra20-apbdma", TEGRA_APB_DMA_BASE, "tegra-apbdma", NULL),
68 OF_DEV_AUXDATA("nvidia,tegra20-pwm", TEGRA_PWFM_BASE, "tegra-pwm", NULL),
72 static __initdata struct tegra_clk_init_table tegra_dt_clk_init_table[] = {
73 /* name parent rate enabled */
74 { "uarta", "pll_p", 216000000, true },
75 { "uartd", "pll_p", 216000000, true },
76 { "usbd", "clk_m", 12000000, false },
77 { "usb2", "clk_m", 12000000, false },
78 { "usb3", "clk_m", 12000000, false },
79 { "pll_a", "pll_p_out1", 56448000, true },
80 { "pll_a_out0", "pll_a", 11289600, true },
81 { "cdev1", NULL, 0, true },
82 { "i2s1", "pll_a_out0", 11289600, false},
83 { "i2s2", "pll_a_out0", 11289600, false},
87 static void __init tegra_dt_init(void)
89 tegra_clk_init_from_table(tegra_dt_clk_init_table);
92 * Finished with the static registrations now; fill in the missing
95 of_platform_populate(NULL, of_default_bus_match_table,
96 tegra20_auxdata_lookup, NULL);
99 static void __init trimslice_init(void)
101 #ifdef CONFIG_TEGRA_PCI
104 ret = tegra_pcie_init(true, true);
106 pr_err("tegra_pci_init() failed: %d\n", ret);
110 static void __init harmony_init(void)
112 #ifdef CONFIG_TEGRA_PCI
115 ret = harmony_pcie_init();
117 pr_err("harmony_pcie_init() failed: %d\n", ret);
121 static void __init paz00_init(void)
123 tegra_paz00_wifikill_init();
129 } board_init_funcs[] = {
130 { "compulab,trimslice", trimslice_init },
131 { "nvidia,harmony", harmony_init },
132 { "compal,paz00", paz00_init },
135 static void __init tegra_dt_init_late(void)
141 for (i = 0; i < ARRAY_SIZE(board_init_funcs); i++) {
142 if (of_machine_is_compatible(board_init_funcs[i].machine)) {
143 board_init_funcs[i].init();
149 static const char *tegra20_dt_board_compat[] = {
154 DT_MACHINE_START(TEGRA_DT, "nVidia Tegra20 (Flattened Device Tree)")
155 .map_io = tegra_map_common_io,
156 .smp = smp_ops(tegra_smp_ops),
157 .init_early = tegra20_init_early,
158 .init_irq = tegra_dt_init_irq,
159 .handle_irq = gic_handle_irq,
160 .timer = &tegra_timer,
161 .init_machine = tegra_dt_init,
162 .init_late = tegra_dt_init_late,
163 .restart = tegra_assert_system_reset,
164 .dt_compat = tegra20_dt_board_compat,