334955ef96
Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Link: http://lkml.kernel.org/r/20110601180610.054254048@duck.linux-mips.net Signed-off-by: Thomas Gleixner <tglx@linutronix.de> arch/arm/mach-footbridge/isa-timer.c | 2 +- arch/mips/cobalt/time.c | 2 +- arch/mips/jazz/irq.c | 2 +- arch/mips/kernel/i8253.c | 2 +- arch/mips/mti-malta/malta-time.c | 2 +- arch/mips/sgi-ip22/ip22-time.c | 2 +- arch/mips/sni/time.c | 2 +- arch/x86/kernel/apic/apic.c | 2 +- arch/x86/kernel/apm_32.c | 2 +- arch/x86/kernel/hpet.c | 2 +- arch/x86/kernel/i8253.c | 2 +- arch/x86/kernel/time.c | 2 +- drivers/block/hd.c | 2 +- drivers/clocksource/i8253.c | 2 +- drivers/input/gameport/gameport.c | 2 +- drivers/input/joystick/analog.c | 2 +- drivers/input/misc/pcspkr.c | 2 +- include/linux/i8253.h | 11 +++++++++++ sound/drivers/pcsp/pcsp.h | 2 +- 19 files changed, 29 insertions(+), 18 deletions(-)
54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/*
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* Cobalt time initialization.
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*
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* Copyright (C) 2007 Yoichi Yuasa <yuasa@linux-mips.org>
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <linux/i8253.h>
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#include <linux/init.h>
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#include <asm/gt64120.h>
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#include <asm/time.h>
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#define GT641XX_BASE_CLOCK 50000000 /* 50MHz */
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void __init plat_time_init(void)
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{
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u32 start, end;
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int i = HZ / 10;
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setup_pit_timer();
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gt641xx_set_base_clock(GT641XX_BASE_CLOCK);
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/*
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* MIPS counter frequency is measured during a 100msec interval
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* using GT64111 timer0.
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*/
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while (!gt641xx_timer0_state())
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;
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start = read_c0_count();
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while (i--)
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while (!gt641xx_timer0_state())
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;
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end = read_c0_count();
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mips_hpt_frequency = (end - start) * 10;
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printk(KERN_INFO "MIPS counter frequency %dHz\n", mips_hpt_frequency);
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}
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