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724ce5ee UKK |
1 | /* |
2 | * arch/arm/mach-ns9xxx/processor-ns9360.c | |
3 | * | |
4 | * Copyright (C) 2007 by Digi International Inc. | |
5 | * All rights reserved. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License version 2 as published by | |
9 | * the Free Software Foundation. | |
10 | */ | |
11 | #include <linux/io.h> | |
12 | #include <linux/kernel.h> | |
13 | #include <linux/slab.h> | |
14 | ||
15 | #include <asm/page.h> | |
16 | #include <asm/mach/map.h> | |
a09e64fb RK |
17 | #include <mach/processor-ns9360.h> |
18 | #include <mach/regs-sys-ns9360.h> | |
724ce5ee UKK |
19 | |
20 | void ns9360_reset(char mode) | |
21 | { | |
22 | u32 reg; | |
23 | ||
24 | reg = __raw_readl(SYS_PLL) >> 16; | |
25 | REGSET(reg, SYS_PLL, SWC, YES); | |
26 | __raw_writel(reg, SYS_PLL); | |
27 | } | |
28 | ||
29 | #define CRYSTAL 29491200 /* Hz */ | |
30 | unsigned long ns9360_systemclock(void) | |
31 | { | |
32 | u32 pll = __raw_readl(SYS_PLL); | |
33 | return CRYSTAL * (REGGETIM(pll, SYS_PLL, ND) + 1) | |
34 | >> REGGETIM(pll, SYS_PLL, FS); | |
35 | } | |
36 | ||
37 | static struct map_desc ns9360_io_desc[] __initdata = { | |
38 | { /* BBus */ | |
39 | .virtual = io_p2v(0x90000000), | |
40 | .pfn = __phys_to_pfn(0x90000000), | |
41 | .length = 0x00700000, | |
42 | .type = MT_DEVICE, | |
43 | }, { /* AHB */ | |
44 | .virtual = io_p2v(0xa0100000), | |
45 | .pfn = __phys_to_pfn(0xa0100000), | |
46 | .length = 0x00900000, | |
47 | .type = MT_DEVICE, | |
48 | }, | |
49 | }; | |
50 | ||
51 | void __init ns9360_map_io(void) | |
52 | { | |
53 | iotable_init(ns9360_io_desc, ARRAY_SIZE(ns9360_io_desc)); | |
54 | } |