55 lines
1.3 KiB
C
55 lines
1.3 KiB
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));
|
||
|
|
}
|