arch/arm/mach-tegra/board-dt-tegra20.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/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>
  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 struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = {
  56         OF_DEV_AUXDATA("nvidia,tegra20-pinmux", TEGRA_APB_MISC_BASE + 0x14, "tegra-pinmux", NULL),
  57         OF_DEV_AUXDATA("nvidia,tegra20-gpio", TEGRA_GPIO_BASE, "tegra-gpio", NULL),
  58         OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC1_BASE, "sdhci-tegra.0", NULL),
  59         OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC2_BASE, "sdhci-tegra.1", NULL),
  60         OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC3_BASE, "sdhci-tegra.2", NULL),
  61         OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC4_BASE, "sdhci-tegra.3", NULL),
  62         OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C_BASE, "tegra-i2c.0", NULL),
  63         OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C2_BASE, "tegra-i2c.1", NULL),
  64         OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C3_BASE, "tegra-i2c.2", NULL),
  65         OF_DEV_AUXDATA("nvidia,tegra20-i2c-dvc", TEGRA_DVC_BASE, "tegra-i2c.3", NULL),
  66         OF_DEV_AUXDATA("nvidia,tegra20-i2s", TEGRA_I2S1_BASE, "tegra-i2s.0", NULL),
  67         OF_DEV_AUXDATA("nvidia,tegra20-i2s", TEGRA_I2S2_BASE, "tegra-i2s.1", NULL),
  68         OF_DEV_AUXDATA("nvidia,tegra20-das", TEGRA_APB_MISC_DAS_BASE, "tegra-das", NULL),
  69         OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB_BASE, "tegra-ehci.0",
  70                        &tegra_ehci1_pdata),
  71         OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB2_BASE, "tegra-ehci.1",
  72                        &tegra_ehci2_pdata),
  73         OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB3_BASE, "tegra-ehci.2",
  74                        &tegra_ehci3_pdata),
  75         {}
  76 };
  77
  78 static __initdata struct tegra_clk_init_table tegra_dt_clk_init_table[] = {
  79         /* name         parent          rate            enabled */
  80         { "uartd",      "pll_p",        216000000,      true },
  81         { "usbd",       "clk_m",        12000000,       false },
  82         { "usb2",       "clk_m",        12000000,       false },
  83         { "usb3",       "clk_m",        12000000,       false },
  84         { "pll_a",      "pll_p_out1",   56448000,       true },
  85         { "pll_a_out0", "pll_a",        11289600,       true },
  86         { "cdev1",      NULL,           0,              true },
  87         { "i2s1",       "pll_a_out0",   11289600,       false},
  88         { "i2s2",       "pll_a_out0",   11289600,       false},
  89         { NULL,         NULL,           0,              0},
  90 };
  91
  92 static struct of_device_id tegra_dt_match_table[] __initdata = {
  93         { .compatible = "simple-bus", },
  94         {}
  95 };
  96
  97 static struct {
  98         char *machine;
  99         void (*init)(void);
 100 } pinmux_configs[] = {
 101         { "compulab,trimslice", trimslice_pinmux_init },
 102         { "nvidia,harmony", harmony_pinmux_init },
 103         { "compal,paz00", paz00_pinmux_init },
 104         { "nvidia,seaboard", seaboard_pinmux_init },
 105         { "nvidia,ventana", ventana_pinmux_init },
 106 };
 107
 108 static void __init tegra_dt_init(void)
 109 {
 110         int i;
 111
 112         tegra_clk_init_from_table(tegra_dt_clk_init_table);
 113
 114         for (i = 0; i < ARRAY_SIZE(pinmux_configs); i++) {
 115                 if (of_machine_is_compatible(pinmux_configs[i].machine)) {
 116                         pinmux_configs[i].init();
 117                         break;
 118                 }
 119         }
 120
 121         WARN(i == ARRAY_SIZE(pinmux_configs),
 122                 "Unknown platform! Pinmuxing not initialized\n");
 123
 124         /*
 125          * Finished with the static registrations now; fill in the missing
 126          * devices
 127          */
 128         of_platform_populate(NULL, tegra_dt_match_table,
 129                                 tegra20_auxdata_lookup, NULL);
 130 }
 131
 132 static const char *tegra20_dt_board_compat[] = {
 133         "nvidia,tegra20",
 134         NULL
 135 };
 136
 137 DT_MACHINE_START(TEGRA_DT, "nVidia Tegra20 (Flattened Device Tree)")
 138         .map_io         = tegra_map_common_io,
 139         .init_early     = tegra20_init_early,
 140         .init_irq       = tegra_dt_init_irq,
 141         .handle_irq     = gic_handle_irq,
 142         .timer          = &tegra_timer,
 143         .init_machine   = tegra_dt_init,
 144         .restart        = tegra_assert_system_reset,
 145         .dt_compat      = tegra20_dt_board_compat,
 146 MACHINE_END