board-dt-tegra20.c

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/*
 * nVidia Tegra device tree board support
 *
 * Copyright (C) 2010 Secret Lab Technologies, Ltd.
 * Copyright (C) 2010 Google, Inc.
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/irqdomain.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_fdt.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/pda_power.h>
#include <linux/platform_data/tegra_usb.h>
#include <linux/io.h>
#include <linux/i2c.h>
#include <linux/i2c-tegra.h>
#include <linux/usb/tegra_usb_phy.h>

#include <asm/hardware/gic.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/setup.h>

#include <mach/iomap.h>
#include <mach/irqs.h>

#include "board.h"
#include "clock.h"
#include "common.h"

struct tegra_ehci_platform_data tegra_ehci1_pdata = {
    .operating_mode = TEGRA_USB_OTG,
    .power_down_on_bus_suspend = 1,
    .vbus_gpio = -1,
};

struct tegra_ulpi_config tegra_ehci2_ulpi_phy_config = {
    .reset_gpio = -1,
    .clk = "cdev2",
};

struct tegra_ehci_platform_data tegra_ehci2_pdata = {
    .phy_config = &tegra_ehci2_ulpi_phy_config,
    .operating_mode = TEGRA_USB_HOST,
    .power_down_on_bus_suspend = 1,
    .vbus_gpio = -1,
};

struct tegra_ehci_platform_data tegra_ehci3_pdata = {
    .operating_mode = TEGRA_USB_HOST,
    .power_down_on_bus_suspend = 1,
    .vbus_gpio = -1,
};

struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = {
    OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC1_BASE, "sdhci-tegra.0", NULL),
    OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC2_BASE, "sdhci-tegra.1", NULL),
    OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC3_BASE, "sdhci-tegra.2", NULL),
    OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC4_BASE, "sdhci-tegra.3", NULL),
    OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C_BASE, "tegra-i2c.0", NULL),
    OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C2_BASE, "tegra-i2c.1", NULL),
    OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C3_BASE, "tegra-i2c.2", NULL),
    OF_DEV_AUXDATA("nvidia,tegra20-i2c-dvc", TEGRA_DVC_BASE, "tegra-i2c.3", NULL),
    OF_DEV_AUXDATA("nvidia,tegra20-i2s", TEGRA_I2S1_BASE, "tegra20-i2s.0", NULL),
    OF_DEV_AUXDATA("nvidia,tegra20-i2s", TEGRA_I2S2_BASE, "tegra20-i2s.1", NULL),
    OF_DEV_AUXDATA("nvidia,tegra20-das", TEGRA_APB_MISC_DAS_BASE, "tegra20-das", NULL),
    OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB_BASE, "tegra-ehci.0",
               &tegra_ehci1_pdata),
    OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB2_BASE, "tegra-ehci.1",
               &tegra_ehci2_pdata),
    OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB3_BASE, "tegra-ehci.2",
               &tegra_ehci3_pdata),
    OF_DEV_AUXDATA("nvidia,tegra20-apbdma", TEGRA_APB_DMA_BASE, "tegra-apbdma", NULL),
    OF_DEV_AUXDATA("nvidia,tegra20-pwm", TEGRA_PWFM_BASE, "tegra-pwm", NULL),
    {}
};

static __initdata struct tegra_clk_init_table tegra_dt_clk_init_table[] = {
    /* name     parent      rate        enabled */
    { "uarta",  "pll_p",    216000000,  true },
    { "uartd",  "pll_p",    216000000,  true },
    { "usbd",   "clk_m",    12000000,   false },
    { "usb2",   "clk_m",    12000000,   false },
    { "usb3",   "clk_m",    12000000,   false },
    { "pll_a",      "pll_p_out1",   56448000,       true },
    { "pll_a_out0", "pll_a",        11289600,       true },
    { "cdev1",      NULL,           0,              true },
    { "i2s1",       "pll_a_out0",   11289600,       false},
    { "i2s2",       "pll_a_out0",   11289600,       false},
    { NULL,     NULL,       0,      0},
};

static void __init tegra_dt_init(void)
{
    tegra_clk_init_from_table(tegra_dt_clk_init_table);

    /*
     * Finished with the static registrations now; fill in the missing
     * devices
     */
    of_platform_populate(NULL, of_default_bus_match_table,
                tegra20_auxdata_lookup, NULL);
}

static void __init trimslice_init(void)
{
#ifdef CONFIG_TEGRA_PCI
    int ret;

    ret = tegra_pcie_init(true, true);
    if (ret)
        pr_err("tegra_pci_init() failed: %d\n", ret);
#endif
}

static void __init harmony_init(void)
{
#ifdef CONFIG_TEGRA_PCI
    int ret;

    ret = harmony_pcie_init();
    if (ret)
        pr_err("harmony_pcie_init() failed: %d\n", ret);
#endif
}

static void __init paz00_init(void)
{
    tegra_paz00_wifikill_init();
}

static struct {
    char *machine;
    void (*init)(void);
} board_init_funcs[] = {
    { "compulab,trimslice", trimslice_init },
    { "nvidia,harmony", harmony_init },
    { "compal,paz00", paz00_init },
};

static void __init tegra_dt_init_late(void)
{
    int i;

    tegra_init_late();

    for (i = 0; i < ARRAY_SIZE(board_init_funcs); i++) {
        if (of_machine_is_compatible(board_init_funcs[i].machine)) {
            board_init_funcs[i].init();
            break;
        }
    }
}

static const char *tegra20_dt_board_compat[] = {
    "nvidia,tegra20",
    NULL
};

DT_MACHINE_START(TEGRA_DT, "nVidia Tegra20 (Flattened Device Tree)")
    .map_io     = tegra_map_common_io,
    .smp        = smp_ops(tegra_smp_ops),
    .init_early = tegra20_init_early,
    .init_irq   = tegra_dt_init_irq,
    .handle_irq = gic_handle_irq,
    .timer      = &tegra_sys_timer,
    .init_machine   = tegra_dt_init,
    .init_late  = tegra_dt_init_late,
    .restart    = tegra_assert_system_reset,
    .dt_compat  = tegra20_dt_board_compat,
MACHINE_END