7dd9d502b6
OMAP3 devices may or may not have security features enabled. Security enabled devices are known as high-secure (HS) and devices without security are known as general purpose (GP). Some OMAP3 boards, such as the OMAP3 beagle board, only use GP devices and for GP devices there is a 12th timer available on-chip that can operate at 32kHz. The clock for 12th timer is generated by an internal oscillator and is unique this timer. Boards such as the beagle board use this timer as a 32kHz based clock-events timer because early versions of the board had a hardware problem preventing them from using other on-chip timers clocked by a external 32kHz clock. When booting with device-tree all OMAP3 devices use timer 1 by default for the clock-events timer. Therefore, add a generic machine descriptor for boards with OMAP3 GP devices so that they can use the 12th timer as the clock-events timer instead of the default. Signed-off-by: Jon Hunter <jon-hunter@ti.com>
177 lines
4.5 KiB
C
177 lines
4.5 KiB
C
/*
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* Copyright (C) 2005 Nokia Corporation
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* Author: Paul Mundt <paul.mundt@nokia.com>
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* Modified from the original mach-omap/omap2/board-generic.c did by Paul
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* to support the OMAP2+ device tree boards with an unique board file.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/io.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/irqdomain.h>
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#include <asm/hardware/gic.h>
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#include <asm/mach/arch.h>
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#include "common.h"
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#include "common-board-devices.h"
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#if !(defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3))
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#define intc_of_init NULL
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#endif
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#ifndef CONFIG_ARCH_OMAP4
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#define gic_of_init NULL
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#endif
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static struct of_device_id omap_dt_match_table[] __initdata = {
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{ .compatible = "simple-bus", },
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{ .compatible = "ti,omap-infra", },
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{ }
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};
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static void __init omap_generic_init(void)
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{
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omap_sdrc_init(NULL, NULL);
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of_platform_populate(NULL, omap_dt_match_table, NULL, NULL);
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}
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#ifdef CONFIG_SOC_OMAP2420
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static const char *omap242x_boards_compat[] __initdata = {
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"ti,omap2420",
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NULL,
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};
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DT_MACHINE_START(OMAP242X_DT, "Generic OMAP2420 (Flattened Device Tree)")
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.reserve = omap_reserve,
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.map_io = omap242x_map_io,
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.init_early = omap2420_init_early,
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.init_irq = omap_intc_of_init,
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.handle_irq = omap2_intc_handle_irq,
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.init_machine = omap_generic_init,
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.timer = &omap2_timer,
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.dt_compat = omap242x_boards_compat,
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.restart = omap_prcm_restart,
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MACHINE_END
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#endif
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#ifdef CONFIG_SOC_OMAP2430
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static const char *omap243x_boards_compat[] __initdata = {
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"ti,omap2430",
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NULL,
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};
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DT_MACHINE_START(OMAP243X_DT, "Generic OMAP2430 (Flattened Device Tree)")
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.reserve = omap_reserve,
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.map_io = omap243x_map_io,
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.init_early = omap2430_init_early,
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.init_irq = omap_intc_of_init,
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.handle_irq = omap2_intc_handle_irq,
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.init_machine = omap_generic_init,
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.timer = &omap2_timer,
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.dt_compat = omap243x_boards_compat,
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.restart = omap_prcm_restart,
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MACHINE_END
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#endif
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#ifdef CONFIG_ARCH_OMAP3
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static const char *omap3_boards_compat[] __initdata = {
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"ti,omap3",
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NULL,
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};
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DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)")
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.reserve = omap_reserve,
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.map_io = omap3_map_io,
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.init_early = omap3430_init_early,
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.init_irq = omap_intc_of_init,
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.handle_irq = omap3_intc_handle_irq,
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.init_machine = omap_generic_init,
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.timer = &omap3_timer,
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.dt_compat = omap3_boards_compat,
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.restart = omap_prcm_restart,
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MACHINE_END
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static const char *omap3_gp_boards_compat[] __initdata = {
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"ti,omap3-beagle",
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NULL,
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};
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DT_MACHINE_START(OMAP3_GP_DT, "Generic OMAP3-GP (Flattened Device Tree)")
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.reserve = omap_reserve,
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.map_io = omap3_map_io,
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.init_early = omap3430_init_early,
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.init_irq = omap_intc_of_init,
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.handle_irq = omap3_intc_handle_irq,
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.init_machine = omap_generic_init,
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.timer = &omap3_secure_timer,
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.dt_compat = omap3_gp_boards_compat,
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.restart = omap_prcm_restart,
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MACHINE_END
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#endif
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#ifdef CONFIG_SOC_AM33XX
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static const char *am33xx_boards_compat[] __initdata = {
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"ti,am33xx",
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NULL,
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};
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DT_MACHINE_START(AM33XX_DT, "Generic AM33XX (Flattened Device Tree)")
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.reserve = omap_reserve,
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.map_io = am33xx_map_io,
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.init_early = am33xx_init_early,
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.init_irq = omap_intc_of_init,
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.handle_irq = omap3_intc_handle_irq,
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.init_machine = omap_generic_init,
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.timer = &omap3_am33xx_timer,
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.dt_compat = am33xx_boards_compat,
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MACHINE_END
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#endif
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#ifdef CONFIG_ARCH_OMAP4
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static const char *omap4_boards_compat[] __initdata = {
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"ti,omap4",
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NULL,
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};
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DT_MACHINE_START(OMAP4_DT, "Generic OMAP4 (Flattened Device Tree)")
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.reserve = omap_reserve,
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.smp = smp_ops(omap4_smp_ops),
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.map_io = omap4_map_io,
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.init_early = omap4430_init_early,
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.init_irq = omap_gic_of_init,
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.handle_irq = gic_handle_irq,
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.init_machine = omap_generic_init,
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.init_late = omap4430_init_late,
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.timer = &omap4_timer,
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.dt_compat = omap4_boards_compat,
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.restart = omap_prcm_restart,
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MACHINE_END
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#endif
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#ifdef CONFIG_SOC_OMAP5
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static const char *omap5_boards_compat[] __initdata = {
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"ti,omap5",
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NULL,
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};
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DT_MACHINE_START(OMAP5_DT, "Generic OMAP5 (Flattened Device Tree)")
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.reserve = omap_reserve,
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.smp = smp_ops(omap4_smp_ops),
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.map_io = omap5_map_io,
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.init_early = omap5_init_early,
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.init_irq = omap_gic_of_init,
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.handle_irq = gic_handle_irq,
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.init_machine = omap_generic_init,
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.timer = &omap5_timer,
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.dt_compat = omap5_boards_compat,
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.restart = omap_prcm_restart,
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MACHINE_END
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#endif
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