arch/arm/mach-tegra/board-dt.c

   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/io.h>
  32 #include <linux/i2c.h>
  33 #include <linux/i2c-tegra.h>
  34
  35 #include <asm/mach-types.h>
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/time.h>
  38 #include <asm/setup.h>
  39 #include <asm/hardware/gic.h>
  40
  41 #include <mach/iomap.h>
  42 #include <mach/irqs.h>
  43
  44 #include "board.h"
  45 #include "board-harmony.h"
  46 #include "clock.h"
  47 #include "devices.h"
  48
  49 void harmony_pinmux_init(void);
  50 void paz00_pinmux_init(void);
  51 void seaboard_pinmux_init(void);
  52 void trimslice_pinmux_init(void);
  53 void ventana_pinmux_init(void);
  54
  55 static const struct of_device_id tegra_dt_irq_match[] __initconst = {
  56         { .compatible = "arm,cortex-a9-gic", .data = gic_of_init },
  57         { }
  58 };
  59
  60 void __init tegra_dt_init_irq(void)
  61 {
  62         tegra_init_irq();
  63         of_irq_init(tegra_dt_irq_match);
  64 }
  65
  66 struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = {
  67         OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC1_BASE, "sdhci-tegra.0", NULL),
  68         OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC2_BASE, "sdhci-tegra.1", NULL),
  69         OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC3_BASE, "sdhci-tegra.2", NULL),
  70         OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC4_BASE, "sdhci-tegra.3", NULL),
  71         OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C_BASE, "tegra-i2c.0", NULL),
  72         OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C2_BASE, "tegra-i2c.1", NULL),
  73         OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C3_BASE, "tegra-i2c.2", NULL),
  74         OF_DEV_AUXDATA("nvidia,tegra20-i2c-dvc", TEGRA_DVC_BASE, "tegra-i2c.3", NULL),
  75         OF_DEV_AUXDATA("nvidia,tegra20-i2s", TEGRA_I2S1_BASE, "tegra-i2s.0", NULL),
  76         OF_DEV_AUXDATA("nvidia,tegra20-i2s", TEGRA_I2S2_BASE, "tegra-i2s.1", NULL),
  77         OF_DEV_AUXDATA("nvidia,tegra20-das", TEGRA_APB_MISC_DAS_BASE, "tegra-das", NULL),
  78         OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB_BASE, "tegra-ehci.0",
  79                        &tegra_ehci1_device.dev.platform_data),
  80         OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB2_BASE, "tegra-ehci.1",
  81                        &tegra_ehci2_device.dev.platform_data),
  82         OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB3_BASE, "tegra-ehci.2",
  83                        &tegra_ehci3_device.dev.platform_data),
  84         {}
  85 };
  86
  87 static __initdata struct tegra_clk_init_table tegra_dt_clk_init_table[] = {
  88         /* name         parent          rate            enabled */
  89         { "uartd",      "pll_p",        216000000,      true },
  90         { "usbd",       "clk_m",        12000000,       false },
  91         { "usb2",       "clk_m",        12000000,       false },
  92         { "usb3",       "clk_m",        12000000,       false },
  93         { "pll_a",      "pll_p_out1",   56448000,       true },
  94         { "pll_a_out0", "pll_a",        11289600,       true },
  95         { "cdev1",      NULL,           0,              true },
  96         { "i2s1",       "pll_a_out0",   11289600,       false},
  97         { "i2s2",       "pll_a_out0",   11289600,       false},
  98         { NULL,         NULL,           0,              0},
  99 };
 100
 101 static struct of_device_id tegra_dt_match_table[] __initdata = {
 102         { .compatible = "simple-bus", },
 103         {}
 104 };
 105
 106 static struct {
 107         char *machine;
 108         void (*init)(void);
 109 } pinmux_configs[] = {
 110         { "compulab,trimslice", trimslice_pinmux_init },
 111         { "nvidia,harmony", harmony_pinmux_init },
 112         { "compal,paz00", paz00_pinmux_init },
 113         { "nvidia,seaboard", seaboard_pinmux_init },
 114         { "nvidia,ventana", ventana_pinmux_init },
 115 };
 116
 117 static void __init tegra_dt_init(void)
 118 {
 119         int i;
 120
 121         tegra_clk_init_from_table(tegra_dt_clk_init_table);
 122
 123         /*
 124          * Finished with the static registrations now; fill in the missing
 125          * devices
 126          */
 127         of_platform_populate(NULL, tegra_dt_match_table,
 128                                 tegra20_auxdata_lookup, NULL);
 129
 130         for (i = 0; i < ARRAY_SIZE(pinmux_configs); i++) {
 131                 if (of_machine_is_compatible(pinmux_configs[i].machine)) {
 132                         pinmux_configs[i].init();
 133                         break;
 134                 }
 135         }
 136
 137         WARN(i == ARRAY_SIZE(pinmux_configs),
 138                 "Unknown platform! Pinmuxing not initialized\n");
 139 }
 140
 141 static const char * tegra_dt_board_compat[] = {
 142         "compulab,trimslice",
 143         "nvidia,harmony",
 144         "compal,paz00",
 145         "nvidia,seaboard",
 146         "nvidia,ventana",
 147         NULL
 148 };
 149
 150 DT_MACHINE_START(TEGRA_DT, "nVidia Tegra (Flattened Device Tree)")
 151         .map_io         = tegra_map_common_io,
 152         .init_early     = tegra_init_early,
 153         .init_irq       = tegra_dt_init_irq,
 154         .timer          = &tegra_timer,
 155         .init_machine   = tegra_dt_init,
 156         .dt_compat      = tegra_dt_board_compat,
 157 MACHINE_END