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Leave a comment explaining the constant value of 27Mhz used in include/mach/timex.h for all DaVinci platforms. Many of the platforms actually run at 24MHz timer frequency (Eg. EVMs of DM355, DM365 and OMAP-L1). The comment also serves as a porting alert. Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
23 lines
759 B
C
23 lines
759 B
C
/*
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* DaVinci timer defines
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*
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* Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
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*
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* 2007 (c) MontaVista Software, Inc. This file is licensed under
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* the terms of the GNU General Public License version 2. This program
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* is licensed "as is" without any warranty of any kind, whether express
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* or implied.
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*/
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#ifndef __ASM_ARCH_TIMEX_H
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#define __ASM_ARCH_TIMEX_H
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/*
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* Alert: Not all timers of the DaVinci family run at a frequency of 27MHz,
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* but we should be fine as long as CLOCK_TICK_RATE or LATCH (see include/
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* linux/jiffies.h) are not used directly in code. Currently none of the
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* code relevant to DaVinci platform depends on these values directly.
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*/
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#define CLOCK_TICK_RATE 27000000
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#endif /* __ASM_ARCH_TIMEX_H__ */
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