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https://github.com/edk2-porting/linux-next.git
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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
/*
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* nVidia Tegra device tree board support
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*
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* Copyright (C) 2010 Secret Lab Technologies, Ltd.
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* Copyright (C) 2010 Google, Inc.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/serial_8250.h>
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#include <linux/clk.h>
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#include <linux/dma-mapping.h>
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#include <linux/irqdomain.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/of_fdt.h>
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#include <linux/of_irq.h>
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#include <linux/of_platform.h>
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#include <linux/pda_power.h>
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#include <linux/io.h>
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#include <linux/i2c.h>
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#include <linux/i2c-tegra.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/time.h>
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#include <asm/setup.h>
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#include <mach/iomap.h>
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#include <mach/irqs.h>
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#include "board.h"
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#include "board-harmony.h"
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#include "clock.h"
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#include "devices.h"
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void harmony_pinmux_init(void);
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void seaboard_pinmux_init(void);
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struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = {
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OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC1_BASE, "sdhci-tegra.0", NULL),
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OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC2_BASE, "sdhci-tegra.1", NULL),
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OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC3_BASE, "sdhci-tegra.2", NULL),
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OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC4_BASE, "sdhci-tegra.3", NULL),
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OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C_BASE, "tegra-i2c.0", NULL),
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OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C2_BASE, "tegra-i2c.1", NULL),
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OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C3_BASE, "tegra-i2c.2", NULL),
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OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_DVC_BASE, "tegra-i2c.3", NULL),
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OF_DEV_AUXDATA("nvidia,tegra20-i2s", TEGRA_I2S1_BASE, "tegra-i2s.0", NULL),
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OF_DEV_AUXDATA("nvidia,tegra20-i2s", TEGRA_I2S1_BASE, "tegra-i2s.1", NULL),
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OF_DEV_AUXDATA("nvidia,tegra20-das", TEGRA_APB_MISC_DAS_BASE, "tegra-das", NULL),
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{}
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};
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static __initdata struct tegra_clk_init_table tegra_dt_clk_init_table[] = {
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/* name parent rate enabled */
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{ "uartd", "pll_p", 216000000, true },
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{ NULL, NULL, 0, 0},
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};
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static struct of_device_id tegra_dt_match_table[] __initdata = {
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{ .compatible = "simple-bus", },
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{}
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};
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static struct of_device_id tegra_dt_gic_match[] __initdata = {
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{ .compatible = "nvidia,tegra20-gic", },
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{}
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};
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static void __init tegra_dt_init(void)
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{
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struct device_node *node;
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node = of_find_matching_node_by_address(NULL, tegra_dt_gic_match,
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TEGRA_ARM_INT_DIST_BASE);
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if (node)
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irq_domain_add_simple(node, INT_GIC_BASE);
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tegra_clk_init_from_table(tegra_dt_clk_init_table);
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if (of_machine_is_compatible("nvidia,harmony"))
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harmony_pinmux_init();
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else if (of_machine_is_compatible("nvidia,seaboard"))
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seaboard_pinmux_init();
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/*
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* Finished with the static registrations now; fill in the missing
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* devices
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*/
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of_platform_populate(NULL, tegra_dt_match_table, tegra20_auxdata_lookup, NULL);
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}
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static const char * tegra_dt_board_compat[] = {
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"nvidia,harmony",
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"nvidia,seaboard",
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NULL
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};
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DT_MACHINE_START(TEGRA_DT, "nVidia Tegra (Flattened Device Tree)")
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.map_io = tegra_map_common_io,
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.init_early = tegra_init_early,
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.init_irq = tegra_init_irq,
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.timer = &tegra_timer,
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.init_machine = tegra_dt_init,
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.dt_compat = tegra_dt_board_compat,
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MACHINE_END
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