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processor-ns9360.c

/*
 * arch/arm/mach-ns9xxx/processor-ns9360.c
 *
 * Copyright (C) 2007 by Digi International Inc.
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 */
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/slab.h>

#include <asm/page.h>
#include <asm/mach/map.h>
#include <asm/arch-ns9xxx/processor-ns9360.h>
#include <asm/arch-ns9xxx/regs-sys-ns9360.h>

void ns9360_reset(char mode)
{
      u32 reg;

      reg = __raw_readl(SYS_PLL) >> 16;
      REGSET(reg, SYS_PLL, SWC, YES);
      __raw_writel(reg, SYS_PLL);
}

#define CRYSTAL 29491200 /* Hz */
unsigned long ns9360_systemclock(void)
{
      u32 pll = __raw_readl(SYS_PLL);
      return CRYSTAL * (REGGETIM(pll, SYS_PLL, ND) + 1)
            >> REGGETIM(pll, SYS_PLL, FS);
}

static struct map_desc ns9360_io_desc[] __initdata = {
      { /* BBus */
            .virtual = io_p2v(0x90000000),
            .pfn = __phys_to_pfn(0x90000000),
            .length = 0x00700000,
            .type = MT_DEVICE,
      }, { /* AHB */
            .virtual = io_p2v(0xa0100000),
            .pfn = __phys_to_pfn(0xa0100000),
            .length = 0x00900000,
            .type = MT_DEVICE,
      },
};

void __init ns9360_map_io(void)
{
      iotable_init(ns9360_io_desc, ARRAY_SIZE(ns9360_io_desc));
}

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