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1 /*
2  * nVidia Tegra device tree board support
3  *
4  * Copyright (C) 2010 Secret Lab Technologies, Ltd.
5  * Copyright (C) 2010 Google, Inc.
6  *
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.
10  *
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.
15  *
16  */
17
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>
25 #include <linux/of.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>
31 #include <linux/platform_data/tegra_usb.h>
32 #include <linux/io.h>
33 #include <linux/i2c.h>
34 #include <linux/i2c-tegra.h>
35 #include <linux/usb/tegra_usb_phy.h>
36
37 #include <asm/hardware/gic.h>
38 #include <asm/mach-types.h>
39 #include <asm/mach/arch.h>
40 #include <asm/mach/time.h>
41 #include <asm/setup.h>
42
43 #include "board.h"
44 #include "clock.h"
45 #include "common.h"
46 #include "iomap.h"
47
48 struct tegra_ehci_platform_data tegra_ehci1_pdata = {
49         .operating_mode = TEGRA_USB_OTG,
50         .power_down_on_bus_suspend = 1,
51         .vbus_gpio = -1,
52 };
53
54 struct tegra_ulpi_config tegra_ehci2_ulpi_phy_config = {
55         .reset_gpio = -1,
56         .clk = "cdev2",
57 };
58
59 struct tegra_ehci_platform_data tegra_ehci2_pdata = {
60         .phy_config = &tegra_ehci2_ulpi_phy_config,
61         .operating_mode = TEGRA_USB_HOST,
62         .power_down_on_bus_suspend = 1,
63         .vbus_gpio = -1,
64 };
65
66 struct tegra_ehci_platform_data tegra_ehci3_pdata = {
67         .operating_mode = TEGRA_USB_HOST,
68         .power_down_on_bus_suspend = 1,
69         .vbus_gpio = -1,
70 };
71
72 struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = {
73         OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC1_BASE, "sdhci-tegra.0", NULL),
74         OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC2_BASE, "sdhci-tegra.1", NULL),
75         OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC3_BASE, "sdhci-tegra.2", NULL),
76         OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC4_BASE, "sdhci-tegra.3", NULL),
77         OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C_BASE, "tegra-i2c.0", NULL),
78         OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C2_BASE, "tegra-i2c.1", NULL),
79         OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C3_BASE, "tegra-i2c.2", NULL),
80         OF_DEV_AUXDATA("nvidia,tegra20-i2c-dvc", TEGRA_DVC_BASE, "tegra-i2c.3", NULL),
81         OF_DEV_AUXDATA("nvidia,tegra20-i2s", TEGRA_I2S1_BASE, "tegra20-i2s.0", NULL),
82         OF_DEV_AUXDATA("nvidia,tegra20-i2s", TEGRA_I2S2_BASE, "tegra20-i2s.1", NULL),
83         OF_DEV_AUXDATA("nvidia,tegra20-das", TEGRA_APB_MISC_DAS_BASE, "tegra20-das", NULL),
84         OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB_BASE, "tegra-ehci.0",
85                        &tegra_ehci1_pdata),
86         OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB2_BASE, "tegra-ehci.1",
87                        &tegra_ehci2_pdata),
88         OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB3_BASE, "tegra-ehci.2",
89                        &tegra_ehci3_pdata),
90         OF_DEV_AUXDATA("nvidia,tegra20-apbdma", TEGRA_APB_DMA_BASE, "tegra-apbdma", NULL),
91         OF_DEV_AUXDATA("nvidia,tegra20-pwm", TEGRA_PWFM_BASE, "tegra-pwm", NULL),
92         OF_DEV_AUXDATA("nvidia,tegra20-sflash", 0x7000c380, "spi", NULL),
93         OF_DEV_AUXDATA("nvidia,tegra20-slink", 0x7000D400, "spi_tegra.0", NULL),
94         OF_DEV_AUXDATA("nvidia,tegra20-slink", 0x7000D600, "spi_tegra.1", NULL),
95         OF_DEV_AUXDATA("nvidia,tegra20-slink", 0x7000D800, "spi_tegra.2", NULL),
96         OF_DEV_AUXDATA("nvidia,tegra20-slink", 0x7000DA00, "spi_tegra.3", NULL),
97         {}
98 };
99
100 static __initdata struct tegra_clk_init_table tegra_dt_clk_init_table[] = {
101         /* name         parent          rate            enabled */
102         { "uarta",      "pll_p",        216000000,      true },
103         { "uartd",      "pll_p",        216000000,      true },
104         { "usbd",       "clk_m",        12000000,       false },
105         { "usb2",       "clk_m",        12000000,       false },
106         { "usb3",       "clk_m",        12000000,       false },
107         { "pll_a",      "pll_p_out1",   56448000,       true },
108         { "pll_a_out0", "pll_a",        11289600,       true },
109         { "cdev1",      NULL,           0,              true },
110         { "blink",      "clk_32k",      32768,          true },
111         { "i2s1",       "pll_a_out0",   11289600,       false},
112         { "i2s2",       "pll_a_out0",   11289600,       false},
113         { "sdmmc1",     "pll_p",        48000000,       false},
114         { "sdmmc3",     "pll_p",        48000000,       false},
115         { "sdmmc4",     "pll_p",        48000000,       false},
116         { "spi",        "pll_p",        20000000,       false },
117         { "sbc1",       "pll_p",        100000000,      false },
118         { "sbc2",       "pll_p",        100000000,      false },
119         { "sbc3",       "pll_p",        100000000,      false },
120         { "sbc4",       "pll_p",        100000000,      false },
121         { NULL,         NULL,           0,              0},
122 };
123
124 static void __init tegra_dt_init(void)
125 {
126         tegra_clk_init_from_table(tegra_dt_clk_init_table);
127
128         /*
129          * Finished with the static registrations now; fill in the missing
130          * devices
131          */
132         of_platform_populate(NULL, of_default_bus_match_table,
133                                 tegra20_auxdata_lookup, NULL);
134 }
135
136 static void __init trimslice_init(void)
137 {
138 #ifdef CONFIG_TEGRA_PCI
139         int ret;
140
141         ret = tegra_pcie_init(true, true);
142         if (ret)
143                 pr_err("tegra_pci_init() failed: %d\n", ret);
144 #endif
145 }
146
147 static void __init harmony_init(void)
148 {
149 #ifdef CONFIG_TEGRA_PCI
150         int ret;
151
152         ret = harmony_pcie_init();
153         if (ret)
154                 pr_err("harmony_pcie_init() failed: %d\n", ret);
155 #endif
156 }
157
158 static void __init paz00_init(void)
159 {
160         tegra_paz00_wifikill_init();
161 }
162
163 static struct {
164         char *machine;
165         void (*init)(void);
166 } board_init_funcs[] = {
167         { "compulab,trimslice", trimslice_init },
168         { "nvidia,harmony", harmony_init },
169         { "compal,paz00", paz00_init },
170 };
171
172 static void __init tegra_dt_init_late(void)
173 {
174         int i;
175
176         tegra_init_late();
177
178         for (i = 0; i < ARRAY_SIZE(board_init_funcs); i++) {
179                 if (of_machine_is_compatible(board_init_funcs[i].machine)) {
180                         board_init_funcs[i].init();
181                         break;
182                 }
183         }
184 }
185
186 static const char *tegra20_dt_board_compat[] = {
187         "nvidia,tegra20",
188         NULL
189 };
190
191 DT_MACHINE_START(TEGRA_DT, "nVidia Tegra20 (Flattened Device Tree)")
192         .map_io         = tegra_map_common_io,
193         .smp            = smp_ops(tegra_smp_ops),
194         .init_early     = tegra20_init_early,
195         .init_irq       = tegra_dt_init_irq,
196         .handle_irq     = gic_handle_irq,
197         .timer          = &tegra_sys_timer,
198         .init_machine   = tegra_dt_init,
199         .init_late      = tegra_dt_init_late,
200         .restart        = tegra_assert_system_reset,
201         .dt_compat      = tegra20_dt_board_compat,
202 MACHINE_END