5eaa215607
Apparently, CONFIG_SYS_HZ must be 1000. Change this, and fix the timer driver to conform to this. Have the timer implementation export a custom API get_timer_us() for use by the BCM2835 MMC API, which needs us resolution for a HW workaround. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
40 lines
949 B
C
40 lines
949 B
C
/*
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* (C) Copyright 2012 Stephen Warren
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* 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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#ifndef _BCM2835_TIMER_H
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#define _BCM2835_TIMER_H
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#define BCM2835_TIMER_PHYSADDR 0x20003000
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struct bcm2835_timer_regs {
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u32 cs;
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u32 clo;
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u32 chi;
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u32 c0;
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u32 c1;
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u32 c2;
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u32 c3;
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};
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#define BCM2835_TIMER_CS_M3 (1 << 3)
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#define BCM2835_TIMER_CS_M2 (1 << 2)
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#define BCM2835_TIMER_CS_M1 (1 << 1)
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#define BCM2835_TIMER_CS_M0 (1 << 0)
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extern ulong get_timer_us(ulong base);
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#endif
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