release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-s3c2440/s3c2440-pll-16934400.c

   1 /* arch/arm/mach-s3c2440/s3c2440-pll-16934400.c
   2  *
   3  * Copyright (c) 2006-2008 Simtec Electronics
   4  *      http://armlinux.simtec.co.uk/
   5  *      Ben Dooks <ben@simtec.co.uk>
   6  *      Vincent Sanders <vince@arm.linux.org.uk>
   7  *
   8  * S3C2440/S3C2442 CPU PLL tables (16.93444MHz Crystal)
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13 */
  14
  15 #include <linux/types.h>
  16 #include <linux/kernel.h>
  17 #include <linux/sysdev.h>
  18 #include <linux/clk.h>
  19 #include <linux/err.h>
  20
  21 #include <plat/cpu.h>
  22 #include <plat/cpu-freq-core.h>
  23
  24 static struct cpufreq_frequency_table s3c2440_plls_169344[] __initdata = {
  25         { .frequency = 78019200,        .index = PLLVAL(121, 5, 3),     },      /* FVco 624.153600 */
  26         { .frequency = 84067200,        .index = PLLVAL(131, 5, 3),     },      /* FVco 672.537600 */
  27         { .frequency = 90115200,        .index = PLLVAL(141, 5, 3),     },      /* FVco 720.921600 */
  28         { .frequency = 96163200,        .index = PLLVAL(151, 5, 3),     },      /* FVco 769.305600 */
  29         { .frequency = 102135600,       .index = PLLVAL(185, 6, 3),     },      /* FVco 817.084800 */
  30         { .frequency = 108259200,       .index = PLLVAL(171, 5, 3),     },      /* FVco 866.073600 */
  31         { .frequency = 114307200,       .index = PLLVAL(127, 3, 3),     },      /* FVco 914.457600 */
  32         { .frequency = 120234240,       .index = PLLVAL(134, 3, 3),     },      /* FVco 961.873920 */
  33         { .frequency = 126161280,       .index = PLLVAL(141, 3, 3),     },      /* FVco 1009.290240 */
  34         { .frequency = 132088320,       .index = PLLVAL(148, 3, 3),     },      /* FVco 1056.706560 */
  35         { .frequency = 138015360,       .index = PLLVAL(155, 3, 3),     },      /* FVco 1104.122880 */
  36         { .frequency = 144789120,       .index = PLLVAL(163, 3, 3),     },      /* FVco 1158.312960 */
  37         { .frequency = 150100363,       .index = PLLVAL(187, 9, 2),     },      /* FVco 600.401454 */
  38         { .frequency = 156038400,       .index = PLLVAL(121, 5, 2),     },      /* FVco 624.153600 */
  39         { .frequency = 162086400,       .index = PLLVAL(126, 5, 2),     },      /* FVco 648.345600 */
  40         { .frequency = 168134400,       .index = PLLVAL(131, 5, 2),     },      /* FVco 672.537600 */
  41         { .frequency = 174048000,       .index = PLLVAL(177, 7, 2),     },      /* FVco 696.192000 */
  42         { .frequency = 180230400,       .index = PLLVAL(141, 5, 2),     },      /* FVco 720.921600 */
  43         { .frequency = 186278400,       .index = PLLVAL(124, 4, 2),     },      /* FVco 745.113600 */
  44         { .frequency = 192326400,       .index = PLLVAL(151, 5, 2),     },      /* FVco 769.305600 */
  45         { .frequency = 198132480,       .index = PLLVAL(109, 3, 2),     },      /* FVco 792.529920 */
  46         { .frequency = 204271200,       .index = PLLVAL(185, 6, 2),     },      /* FVco 817.084800 */
  47         { .frequency = 210268800,       .index = PLLVAL(141, 4, 2),     },      /* FVco 841.075200 */
  48         { .frequency = 216518400,       .index = PLLVAL(171, 5, 2),     },      /* FVco 866.073600 */
  49         { .frequency = 222264000,       .index = PLLVAL(97, 2, 2),      },      /* FVco 889.056000 */
  50         { .frequency = 228614400,       .index = PLLVAL(127, 3, 2),     },      /* FVco 914.457600 */
  51         { .frequency = 234259200,       .index = PLLVAL(158, 4, 2),     },      /* FVco 937.036800 */
  52         { .frequency = 240468480,       .index = PLLVAL(134, 3, 2),     },      /* FVco 961.873920 */
  53         { .frequency = 246960000,       .index = PLLVAL(167, 4, 2),     },      /* FVco 987.840000 */
  54         { .frequency = 252322560,       .index = PLLVAL(141, 3, 2),     },      /* FVco 1009.290240 */
  55         { .frequency = 258249600,       .index = PLLVAL(114, 2, 2),     },      /* FVco 1032.998400 */
  56         { .frequency = 264176640,       .index = PLLVAL(148, 3, 2),     },      /* FVco 1056.706560 */
  57         { .frequency = 270950400,       .index = PLLVAL(120, 2, 2),     },      /* FVco 1083.801600 */
  58         { .frequency = 276030720,       .index = PLLVAL(155, 3, 2),     },      /* FVco 1104.122880 */
  59         { .frequency = 282240000,       .index = PLLVAL(92, 1, 2),      },      /* FVco 1128.960000 */
  60         { .frequency = 289578240,       .index = PLLVAL(163, 3, 2),     },      /* FVco 1158.312960 */
  61         { .frequency = 294235200,       .index = PLLVAL(131, 2, 2),     },      /* FVco 1176.940800 */
  62         { .frequency = 300200727,       .index = PLLVAL(187, 9, 1),     },      /* FVco 600.401454 */
  63         { .frequency = 306358690,       .index = PLLVAL(191, 9, 1),     },      /* FVco 612.717380 */
  64         { .frequency = 312076800,       .index = PLLVAL(121, 5, 1),     },      /* FVco 624.153600 */
  65         { .frequency = 318366720,       .index = PLLVAL(86, 3, 1),      },      /* FVco 636.733440 */
  66         { .frequency = 324172800,       .index = PLLVAL(126, 5, 1),     },      /* FVco 648.345600 */
  67         { .frequency = 330220800,       .index = PLLVAL(109, 4, 1),     },      /* FVco 660.441600 */
  68         { .frequency = 336268800,       .index = PLLVAL(131, 5, 1),     },      /* FVco 672.537600 */
  69         { .frequency = 342074880,       .index = PLLVAL(93, 3, 1),      },      /* FVco 684.149760 */
  70         { .frequency = 348096000,       .index = PLLVAL(177, 7, 1),     },      /* FVco 696.192000 */
  71         { .frequency = 355622400,       .index = PLLVAL(118, 4, 1),     },      /* FVco 711.244800 */
  72         { .frequency = 360460800,       .index = PLLVAL(141, 5, 1),     },      /* FVco 720.921600 */
  73         { .frequency = 366206400,       .index = PLLVAL(165, 6, 1),     },      /* FVco 732.412800 */
  74         { .frequency = 372556800,       .index = PLLVAL(124, 4, 1),     },      /* FVco 745.113600 */
  75         { .frequency = 378201600,       .index = PLLVAL(126, 4, 1),     },      /* FVco 756.403200 */
  76         { .frequency = 384652800,       .index = PLLVAL(151, 5, 1),     },      /* FVco 769.305600 */
  77         { .frequency = 391608000,       .index = PLLVAL(177, 6, 1),     },      /* FVco 783.216000 */
  78         { .frequency = 396264960,       .index = PLLVAL(109, 3, 1),     },      /* FVco 792.529920 */
  79         { .frequency = 402192000,       .index = PLLVAL(87, 2, 1),      },      /* FVco 804.384000 */
  80 };
  81
  82 static int s3c2440_plls169344_add(struct sys_device *dev)
  83 {
  84         struct clk *xtal_clk;
  85         unsigned long xtal;
  86
  87         xtal_clk = clk_get(NULL, "xtal");
  88         if (IS_ERR(xtal_clk))
  89                 return PTR_ERR(xtal_clk);
  90
  91         xtal = clk_get_rate(xtal_clk);
  92         clk_put(xtal_clk);
  93
  94         if (xtal == 169344000) {
  95                 printk(KERN_INFO "Using PLL table for 16.9344MHz crystal\n");
  96                 return s3c_plltab_register(s3c2440_plls_169344,
  97                                            ARRAY_SIZE(s3c2440_plls_169344));
  98         }
  99
 100         return 0;
 101 }
 102
 103 static struct sysdev_driver s3c2440_plls169344_drv = {
 104         .add    = s3c2440_plls169344_add,
 105 };
 106
 107 static int __init s3c2440_pll_16934400(void)
 108 {
 109         return sysdev_driver_register(&s3c2440_sysclass,
 110                                       &s3c2440_plls169344_drv);
 111
 112 }
 113
 114 arch_initcall(s3c2440_pll_16934400);
 115
 116 static struct sysdev_driver s3c2442_plls169344_drv = {
 117         .add    = s3c2440_plls169344_add,
 118 };
 119
 120 static int __init s3c2442_pll_16934400(void)
 121 {
 122         return sysdev_driver_register(&s3c2442_sysclass,
 123                                       &s3c2442_plls169344_drv);
 124
 125 }
 126
 127 arch_initcall(s3c2442_pll_16934400);