54 строки
1.2 KiB
C
54 строки
1.2 KiB
C
/*
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* arch/arm/mach-ns9xxx/processor-ns9360.c
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*
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* Copyright (C) 2007 by Digi International Inc.
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <asm/page.h>
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#include <asm/mach/map.h>
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#include <mach/processor-ns9360.h>
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#include <mach/regs-sys-ns9360.h>
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void ns9360_reset(char mode)
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{
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u32 reg;
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reg = __raw_readl(SYS_PLL) >> 16;
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REGSET(reg, SYS_PLL, SWC, YES);
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__raw_writel(reg, SYS_PLL);
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}
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#define CRYSTAL 29491200 /* Hz */
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unsigned long ns9360_systemclock(void)
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{
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u32 pll = __raw_readl(SYS_PLL);
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return CRYSTAL * (REGGETIM(pll, SYS_PLL, ND) + 1)
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>> REGGETIM(pll, SYS_PLL, FS);
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}
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static struct map_desc ns9360_io_desc[] __initdata = {
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{ /* BBus */
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.virtual = io_p2v(0x90000000),
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.pfn = __phys_to_pfn(0x90000000),
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.length = 0x00700000,
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.type = MT_DEVICE,
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}, { /* AHB */
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.virtual = io_p2v(0xa0100000),
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.pfn = __phys_to_pfn(0xa0100000),
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.length = 0x00900000,
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.type = MT_DEVICE,
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},
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};
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void __init ns9360_map_io(void)
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{
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iotable_init(ns9360_io_desc, ARRAY_SIZE(ns9360_io_desc));
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}
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