diff options
Diffstat (limited to 'arch/arm/mach-tegra/board-dt.c')
| -rw-r--r-- | arch/arm/mach-tegra/board-dt.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/board-dt.c b/arch/arm/mach-tegra/board-dt.c new file mode 100644 index 0000000..74743ad --- /dev/null +++ b/arch/arm/mach-tegra/board-dt.c @@ -0,0 +1,136 @@ +/* + * 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/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 "board-harmony.h" +#include "clock.h" +#include "devices.h" + +void harmony_pinmux_init(void); +void seaboard_pinmux_init(void); +void ventana_pinmux_init(void); + +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", 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_I2S1_BASE, "tegra-i2s.1", NULL), + OF_DEV_AUXDATA("nvidia,tegra20-das", TEGRA_APB_MISC_DAS_BASE, "tegra-das", NULL), + {} +}; + +static __initdata struct tegra_clk_init_table tegra_dt_clk_init_table[] = { + /* name parent rate enabled */ + { "uartd", "pll_p", 216000000, true }, + { NULL, NULL, 0, 0}, +}; + +static struct of_device_id tegra_dt_match_table[] __initdata = { + { .compatible = "simple-bus", }, + {} +}; + +static struct of_device_id tegra_dt_gic_match[] __initdata = { + { .compatible = "nvidia,tegra20-gic", }, + {} +}; + +static struct { + char *machine; + void (*init)(void); +} pinmux_configs[] = { + { "nvidia,harmony", harmony_pinmux_init }, + { "nvidia,seaboard", seaboard_pinmux_init }, + { "nvidia,ventana", ventana_pinmux_init }, +}; + +static void __init tegra_dt_init(void) +{ + struct device_node *node; + int i; + + node = of_find_matching_node_by_address(NULL, tegra_dt_gic_match, + TEGRA_ARM_INT_DIST_BASE); + if (node) + irq_domain_add_simple(node, INT_GIC_BASE); + + 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, tegra_dt_match_table, + tegra20_auxdata_lookup, NULL); + + 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"); +} + +static const char * tegra_dt_board_compat[] = { + "nvidia,harmony", + "nvidia,seaboard", + "nvidia,ventana", + NULL +}; + +DT_MACHINE_START(TEGRA_DT, "nVidia Tegra (Flattened Device Tree)") + .map_io = tegra_map_common_io, + .init_early = tegra_init_early, + .init_irq = tegra_init_irq, + .timer = &tegra_timer, + .init_machine = tegra_dt_init, + .dt_compat = tegra_dt_board_compat, +MACHINE_END |