diff options
Diffstat (limited to 'arch/arm/mach-tegra/board-dt-tegra20.c')
| -rw-r--r-- | arch/arm/mach-tegra/board-dt-tegra20.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/board-dt-tegra20.c b/arch/arm/mach-tegra/board-dt-tegra20.c new file mode 100644 index 00000000000..7a95e0bc4ab --- /dev/null +++ b/arch/arm/mach-tegra/board-dt-tegra20.c @@ -0,0 +1,151 @@ +/* + * 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/io.h> +#include <linux/i2c.h> +#include <linux/i2c-tegra.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 <asm/hardware/gic.h> + +#include <mach/iomap.h> +#include <mach/irqs.h> + +#include "board.h" +#include "board-harmony.h" +#include "clock.h" +#include "devices.h" + +void harmony_pinmux_init(void); +void paz00_pinmux_init(void); +void seaboard_pinmux_init(void); +void trimslice_pinmux_init(void); +void ventana_pinmux_init(void); + +struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = { + OF_DEV_AUXDATA("nvidia,tegra20-pinmux", TEGRA_APB_MISC_BASE + 0x14, "tegra-pinmux", NULL), + OF_DEV_AUXDATA("nvidia,tegra20-gpio", TEGRA_GPIO_BASE, "tegra-gpio", NULL), + 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, "tegra-i2s.0", NULL), + OF_DEV_AUXDATA("nvidia,tegra20-i2s", TEGRA_I2S2_BASE, "tegra-i2s.1", NULL), + OF_DEV_AUXDATA("nvidia,tegra20-das", TEGRA_APB_MISC_DAS_BASE, "tegra-das", NULL), + OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB_BASE, "tegra-ehci.0", + &tegra_ehci1_device.dev.platform_data), + OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB2_BASE, "tegra-ehci.1", + &tegra_ehci2_device.dev.platform_data), + OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB3_BASE, "tegra-ehci.2", + &tegra_ehci3_device.dev.platform_data), + {} +}; + +static __initdata struct tegra_clk_init_table tegra_dt_clk_init_table[] = { + /* name parent rate enabled */ + { "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 struct of_device_id tegra_dt_match_table[] __initdata = { + { .compatible = "simple-bus", }, + {} +}; + +static struct { + char *machine; + void (*init)(void); +} pinmux_configs[] = { + { "compulab,trimslice", trimslice_pinmux_init }, + { "nvidia,harmony", harmony_pinmux_init }, + { "compal,paz00", paz00_pinmux_init }, + { "nvidia,seaboard", seaboard_pinmux_init }, + { "nvidia,ventana", ventana_pinmux_init }, +}; + +static void __init tegra_dt_init(void) +{ + int i; + + tegra_clk_init_from_table(tegra_dt_clk_init_table); + + for (i = 0; i < ARRAY_SIZE(pinmux_configs); i++) { + if (of_machine_is_compatible(pinmux_configs[i].machine)) { + pinmux_configs[i].init(); + break; + } + } + + WARN(i == ARRAY_SIZE(pinmux_configs), + "Unknown platform! Pinmuxing not initialized\n"); + + /* + * Finished with the static registrations now; fill in the missing + * devices + */ + of_platform_populate(NULL, tegra_dt_match_table, + tegra20_auxdata_lookup, NULL); +} + +static const char *tegra20_dt_board_compat[] = { + "compulab,trimslice", + "nvidia,harmony", + "compal,paz00", + "nvidia,seaboard", + "nvidia,ventana", + NULL +}; + +DT_MACHINE_START(TEGRA_DT, "nVidia Tegra20 (Flattened Device Tree)") + .map_io = tegra_map_common_io, + .init_early = tegra20_init_early, + .init_irq = tegra_dt_init_irq, + .handle_irq = gic_handle_irq, + .timer = &tegra_timer, + .init_machine = tegra_dt_init, + .restart = tegra_assert_system_reset, + .dt_compat = tegra20_dt_board_compat, +MACHINE_END |