8e267f3da5
Everything required to populate NVIDIA Tegra devices from the device tree. This patch adds a new DT_MACHINE_DESC() which matches against a tegra20 device tree. So far it only registers the on-chip devices, but it will be refined in follow on patches to configure clocks and pin IO from the device tree also. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
120 lines
3.6 KiB
C
120 lines
3.6 KiB
C
/*
|
|
* 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);
|
|
|
|
|
|
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 void __init tegra_dt_init(void)
|
|
{
|
|
struct device_node *node;
|
|
|
|
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);
|
|
|
|
if (of_machine_is_compatible("nvidia,harmony"))
|
|
harmony_pinmux_init();
|
|
else if (of_machine_is_compatible("nvidia,seaboard"))
|
|
seaboard_pinmux_init();
|
|
|
|
/*
|
|
* 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 * tegra_dt_board_compat[] = {
|
|
"nvidia,harmony",
|
|
"nvidia,seaboard",
|
|
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
|