arch/arm/mach-s3c24xx/pll-s3c2410.c

   1 /*
   2  * Copyright (c) 2006-2007 Simtec Electronics
   3  *      http://armlinux.simtec.co.uk/
   4  *      Ben Dooks <ben@simtec.co.uk>
   5  *      Vincent Sanders <vince@arm.linux.org.uk>
   6  *
   7  * S3C2410 CPU PLL tables
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22 */
  23
  24 #include <linux/types.h>
  25 #include <linux/kernel.h>
  26 #include <linux/module.h>
  27 #include <linux/device.h>
  28 #include <linux/list.h>
  29 #include <linux/clk.h>
  30 #include <linux/err.h>
  31
  32 #include <plat/cpu.h>
  33 #include <plat/cpu-freq-core.h>
  34
  35 /* This array should be sorted in ascending order of the frequencies */
  36 static struct cpufreq_frequency_table pll_vals_12MHz[] = {
  37     { .frequency = 34000000,  .driver_data = PLLVAL(82, 2, 3),   },
  38     { .frequency = 45000000,  .driver_data = PLLVAL(82, 1, 3),   },
  39     { .frequency = 48000000,  .driver_data = PLLVAL(120, 2, 3),  },
  40     { .frequency = 51000000,  .driver_data = PLLVAL(161, 3, 3),  },
  41     { .frequency = 56000000,  .driver_data = PLLVAL(142, 2, 3),  },
  42     { .frequency = 68000000,  .driver_data = PLLVAL(82, 2, 2),   },
  43     { .frequency = 79000000,  .driver_data = PLLVAL(71, 1, 2),   },
  44     { .frequency = 85000000,  .driver_data = PLLVAL(105, 2, 2),  },
  45     { .frequency = 90000000,  .driver_data = PLLVAL(112, 2, 2),  },
  46     { .frequency = 101000000, .driver_data = PLLVAL(127, 2, 2),  },
  47     { .frequency = 113000000, .driver_data = PLLVAL(105, 1, 2),  },
  48     { .frequency = 118000000, .driver_data = PLLVAL(150, 2, 2),  },
  49     { .frequency = 124000000, .driver_data = PLLVAL(116, 1, 2),  },
  50     { .frequency = 135000000, .driver_data = PLLVAL(82, 2, 1),   },
  51     { .frequency = 147000000, .driver_data = PLLVAL(90, 2, 1),   },
  52     { .frequency = 152000000, .driver_data = PLLVAL(68, 1, 1),   },
  53     { .frequency = 158000000, .driver_data = PLLVAL(71, 1, 1),   },
  54     { .frequency = 170000000, .driver_data = PLLVAL(77, 1, 1),   },
  55     { .frequency = 180000000, .driver_data = PLLVAL(82, 1, 1),   },
  56     { .frequency = 186000000, .driver_data = PLLVAL(85, 1, 1),   },
  57     { .frequency = 192000000, .driver_data = PLLVAL(88, 1, 1),   },
  58     { .frequency = 203000000, .driver_data = PLLVAL(161, 3, 1),  },
  59
  60     /* 2410A extras */
  61
  62     { .frequency = 210000000, .driver_data = PLLVAL(132, 2, 1),  },
  63     { .frequency = 226000000, .driver_data = PLLVAL(105, 1, 1),  },
  64     { .frequency = 266000000, .driver_data = PLLVAL(125, 1, 1),  },
  65     { .frequency = 268000000, .driver_data = PLLVAL(126, 1, 1),  },
  66     { .frequency = 270000000, .driver_data = PLLVAL(127, 1, 1),  },
  67 };
  68
  69 static int s3c2410_plls_add(struct device *dev, struct subsys_interface *sif)
  70 {
  71         return s3c_plltab_register(pll_vals_12MHz, ARRAY_SIZE(pll_vals_12MHz));
  72 }
  73
  74 static struct subsys_interface s3c2410_plls_interface = {
  75         .name           = "s3c2410_plls",
  76         .subsys         = &s3c2410_subsys,
  77         .add_dev        = s3c2410_plls_add,
  78 };
  79
  80 static int __init s3c2410_pll_init(void)
  81 {
  82         return subsys_interface_register(&s3c2410_plls_interface);
  83
  84 }
  85 arch_initcall(s3c2410_pll_init);
  86
  87 static struct subsys_interface s3c2410a_plls_interface = {
  88         .name           = "s3c2410a_plls",
  89         .subsys         = &s3c2410a_subsys,
  90         .add_dev        = s3c2410_plls_add,
  91 };
  92
  93 static int __init s3c2410a_pll_init(void)
  94 {
  95         return subsys_interface_register(&s3c2410a_plls_interface);
  96 }
  97 arch_initcall(s3c2410a_pll_init);