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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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5b5c013591
The SyncTimer in AM43x is clocked using the following two sources: 1) An inaccuarte 32k clock (CLK_32KHZ) derived from PER DPLL, causing system time to go slowly (~10% deviation). 2) external 32KHz RTC clock, which may not always be available on board like in the case of ePOS EVM Use gptimer as clocksource instead, as is done in the case of AM335x (which does not have a SyncTimer). With this, system time keeping works accurately. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
257 lines
6.6 KiB
C
257 lines
6.6 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/mach/arch.h>
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#include "common.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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pdata_quirks_init(omap_dt_match_table);
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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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.init_time = omap2_sync32k_timer_init,
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.dt_compat = omap242x_boards_compat,
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.restart = omap2xxx_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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.init_time = omap2_sync32k_timer_init,
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.dt_compat = omap243x_boards_compat,
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.restart = omap2xxx_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,omap3430",
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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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.init_late = omap3_init_late,
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.init_time = omap3_sync32k_timer_init,
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.dt_compat = omap3_boards_compat,
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.restart = omap3xxx_restart,
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MACHINE_END
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static const char *omap36xx_boards_compat[] __initdata = {
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"ti,omap36xx",
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NULL,
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};
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DT_MACHINE_START(OMAP36XX_DT, "Generic OMAP36xx (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 = omap3630_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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.init_late = omap3_init_late,
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.init_time = omap3_sync32k_timer_init,
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.dt_compat = omap36xx_boards_compat,
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.restart = omap3xxx_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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"timll,omap3-devkit8000",
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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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.init_late = omap3_init_late,
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.init_time = omap3_secure_sync32k_timer_init,
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.dt_compat = omap3_gp_boards_compat,
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.restart = omap3xxx_restart,
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MACHINE_END
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static const char *am3517_boards_compat[] __initdata = {
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"ti,am3517",
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NULL,
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};
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DT_MACHINE_START(AM3517_DT, "Generic AM3517 (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 = am35xx_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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.init_late = omap3_init_late,
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.init_time = omap3_gptimer_timer_init,
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.dt_compat = am3517_boards_compat,
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.restart = omap3xxx_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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.init_late = am33xx_init_late,
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.init_time = omap3_gptimer_timer_init,
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.dt_compat = am33xx_boards_compat,
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.restart = am33xx_restart,
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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,omap4460",
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"ti,omap4430",
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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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.init_machine = omap_generic_init,
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.init_late = omap4430_init_late,
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.init_time = omap4_local_timer_init,
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.dt_compat = omap4_boards_compat,
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.restart = omap44xx_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,omap5432",
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"ti,omap5430",
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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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.init_machine = omap_generic_init,
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.init_late = omap5_init_late,
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.init_time = omap5_realtime_timer_init,
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.dt_compat = omap5_boards_compat,
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.restart = omap44xx_restart,
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MACHINE_END
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#endif
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#ifdef CONFIG_SOC_AM43XX
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static const char *am43_boards_compat[] __initdata = {
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"ti,am4372",
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"ti,am43",
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NULL,
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};
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DT_MACHINE_START(AM43_DT, "Generic AM43 (Flattened Device Tree)")
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.map_io = am33xx_map_io,
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.init_early = am43xx_init_early,
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.init_late = am43xx_init_late,
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.init_irq = omap_gic_of_init,
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.init_machine = omap_generic_init,
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.init_time = omap3_gptimer_timer_init,
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.dt_compat = am43_boards_compat,
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MACHINE_END
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#endif
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#ifdef CONFIG_SOC_DRA7XX
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static const char *dra7xx_boards_compat[] __initdata = {
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"ti,dra7xx",
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"ti,dra7",
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NULL,
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};
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DT_MACHINE_START(DRA7XX_DT, "Generic DRA7XX (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 = dra7xx_init_early,
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.init_late = dra7xx_init_late,
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.init_irq = omap_gic_of_init,
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.init_machine = omap_generic_init,
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.init_time = omap5_realtime_timer_init,
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.dt_compat = dra7xx_boards_compat,
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.restart = omap44xx_restart,
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MACHINE_END
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#endif
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