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1276 |
phoenix |
/*
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* linux/include/asm-arm/arch-omaha/timex.h
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*
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* Omaha architecture timex specifications
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*
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* Copyright (C) 1999-2002 ARM Limited
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* Always runs at (almost) 1Mhz.
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*
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* Time is derived as follows
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*
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* CLOCK_TICK_RATE = ((FCLK / 4) / (Prescaler + 1)) / 2
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*
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* Where FCLK = CPU Clock Rate = 133 MHz
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* Prescaler = 16
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*
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* Therefore:
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* CLOCK_TICK_RATE = (33.25 MHz / 17) / 2
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* = 977941 Hz
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*/
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#define CLOCK_TICK_RATE (977941)
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