1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/* arch/arm/plat-s3c24xx/s3c2440-pll-12000000.c
*
* Copyright (c) 2006-2007 Simtec Electronics
* http://armlinux.simtec.co.uk/
* Ben Dooks <ben@simtec.co.uk>
* Vincent Sanders <vince@arm.linux.org.uk>
*
* S3C2440/S3C2442 CPU PLL tables (12MHz Crystal)
*
* 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/types.h>
#include <linux/kernel.h>
#include <linux/sysdev.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <plat/cpu.h>
#include <plat/cpu-freq-core.h>
static struct cpufreq_frequency_table s3c2440_plls_12[] __initdata = {
{ .frequency = 75000000, .index = PLLVAL(0x75, 3, 3), }, /* FVco 600.000000 */
{ .frequency = 80000000, .index = PLLVAL(0x98, 4, 3), }, /* FVco 640.000000 */
{ .frequency = 90000000, .index = PLLVAL(0x70, 2, 3), }, /* FVco 720.000000 */
{ .frequency = 100000000, .index = PLLVAL(0x5c, 1, 3), }, /* FVco 800.000000 */
{ .frequency = 110000000, .index = PLLVAL(0x66, 1, 3), }, /* FVco 880.000000 */
{ .frequency = 120000000, .index = PLLVAL(0x70, 1, 3), }, /* FVco 960.000000 */
{ .frequency = 150000000, .index = PLLVAL(0x75, 3, 2), }, /* FVco 600.000000 */
{ .frequency = 160000000, .index = PLLVAL(0x98, 4, 2), }, /* FVco 640.000000 */
{ .frequency = 170000000, .index = PLLVAL(0x4d, 1, 2), }, /* FVco 680.000000 */
{ .frequency = 180000000, .index = PLLVAL(0x70, 2, 2), }, /* FVco 720.000000 */
{ .frequency = 190000000, .index = PLLVAL(0x57, 1, 2), }, /* FVco 760.000000 */
{ .frequency = 200000000, .index = PLLVAL(0x5c, 1, 2), }, /* FVco 800.000000 */
{ .frequency = 210000000, .index = PLLVAL(0x84, 2, 2), }, /* FVco 840.000000 */
{ .frequency = 220000000, .index = PLLVAL(0x66, 1, 2), }, /* FVco 880.000000 */
{ .frequency = 230000000, .index = PLLVAL(0x6b, 1, 2), }, /* FVco 920.000000 */
{ .frequency = 240000000, .index = PLLVAL(0x70, 1, 2), }, /* FVco 960.000000 */
{ .frequency = 300000000, .index = PLLVAL(0x75, 3, 1), }, /* FVco 600.000000 */
{ .frequency = 310000000, .index = PLLVAL(0x93, 4, 1), }, /* FVco 620.000000 */
{ .frequency = 320000000, .index = PLLVAL(0x98, 4, 1), }, /* FVco 640.000000 */
{ .frequency = 330000000, .index = PLLVAL(0x66, 2, 1), }, /* FVco 660.000000 */
{ .frequency = 340000000, .index = PLLVAL(0x4d, 1, 1), }, /* FVco 680.000000 */
{ .frequency = 350000000, .index = PLLVAL(0xa7, 4, 1), }, /* FVco 700.000000 */
{ .frequency = 360000000, .index = PLLVAL(0x70, 2, 1), }, /* FVco 720.000000 */
{ .frequency = 370000000, .index = PLLVAL(0xb1, 4, 1), }, /* FVco 740.000000 */
{ .frequency = 380000000, .index = PLLVAL(0x57, 1, 1), }, /* FVco 760.000000 */
{ .frequency = 390000000, .index = PLLVAL(0x7a, 2, 1), }, /* FVco 780.000000 */
{ .frequency = 400000000, .index = PLLVAL(0x5c, 1, 1), }, /* FVco 800.000000 */
};
static int s3c2440_plls12_add(struct sys_device *dev)
{
struct clk *xtal_clk;
unsigned long xtal;
xtal_clk = clk_get(NULL, "xtal");
if (IS_ERR(xtal_clk))
return PTR_ERR(xtal_clk);
xtal = clk_get_rate(xtal_clk);
clk_put(xtal_clk);
if (xtal == 12000000) {
printk(KERN_INFO "Using PLL table for 12MHz crystal\n");
return s3c_plltab_register(s3c2440_plls_12,
ARRAY_SIZE(s3c2440_plls_12));
}
return 0;
}
static struct sysdev_driver s3c2440_plls12_drv = {
.add = s3c2440_plls12_add,
};
static int __init s3c2440_pll_12mhz(void)
{
return sysdev_driver_register(&s3c2440_sysclass, &s3c2440_plls12_drv);
}
arch_initcall(s3c2440_pll_12mhz);
static struct sysdev_driver s3c2442_plls12_drv = {
.add = s3c2440_plls12_add,
};
static int __init s3c2442_pll_12mhz(void)
{
return sysdev_driver_register(&s3c2442_sysclass, &s3c2442_plls12_drv);
}
arch_initcall(s3c2442_pll_12mhz);
|
