ARM: S3C2440: CPUFREQ: Add PLL tables

Add PLL tables for the S3C2440.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

diff --git a/arch/arm/plat-s3c24xx/Kconfig b/arch/arm/plat-s3c24xx/Kconfig
index feb9db8..9c449c0 100644 (file)
--- a/arch/arm/plat-s3c24xx/Kconfig
+++ b/arch/arm/plat-s3c24xx/Kconfig
@@ -42,6 +42,20 @@ config S3C2440_CPUFREQ
        help
          CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
 
+config S3C2440_PLL_12000000
+       bool
+       depends on S3C2440_CPUFREQ
+       default y if CPU_FREQ_S3C24XX_PLL
+       help
+         PLL tables for S3C2440 or S3C2442 CPUs with 12MHz crystals.
+
+config S3C2440_PLL_16934400
+       bool
+       depends on S3C2440_CPUFREQ
+       default y if CPU_FREQ_S3C24XX_PLL
+       help
+         PLL tables for S3C2440 or S3C2442 CPUs with 16.934MHz crystals.
+
 config S3C24XX_PWM
        bool "PWM device support"
        select HAVE_PWM

diff --git a/arch/arm/plat-s3c24xx/Makefile b/arch/arm/plat-s3c24xx/Makefile
index b73f2e1..c60317b 100644 (file)
--- a/arch/arm/plat-s3c24xx/Makefile
+++ b/arch/arm/plat-s3c24xx/Makefile
@@ -28,6 +28,9 @@ obj-$(CONFIG_CPU_S3C244X)     += s3c244x.o
 obj-$(CONFIG_CPU_S3C244X)      += s3c244x-irq.o
 obj-$(CONFIG_CPU_S3C244X)      += s3c244x-clock.o
 obj-$(CONFIG_S3C2440_CPUFREQ)  += s3c2440-cpufreq.o
+obj-$(CONFIG_S3C2440_PLL_12000000) += s3c2440-pll-12000000.o
+obj-$(CONFIG_S3C2440_PLL_16934400) += s3c2440-pll-16934400.o
+
 obj-$(CONFIG_PM_SIMTEC)                += pm-simtec.o
 obj-$(CONFIG_PM)               += pm.o
 obj-$(CONFIG_PM)               += irq-pm.o

diff --git a/arch/arm/plat-s3c24xx/s3c2440-pll-12000000.c b/arch/arm/plat-s3c24xx/s3c2440-pll-12000000.c
new file mode 100644 (file)
index 0000000..ff9443b
--- /dev/null
+++ b/arch/arm/plat-s3c24xx/s3c2440-pll-12000000.c
@@ -0,0 +1,97 @@
+/* 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);

diff --git a/arch/arm/plat-s3c24xx/s3c2440-pll-16934400.c b/arch/arm/plat-s3c24xx/s3c2440-pll-16934400.c
new file mode 100644 (file)
index 0000000..7679af1
--- /dev/null
+++ b/arch/arm/plat-s3c24xx/s3c2440-pll-16934400.c
@@ -0,0 +1,127 @@
+/* arch/arm/plat-s3c24xx/s3c2440-pll-16934400.c
+ *
+ * Copyright (c) 2006-2008 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 (16.93444MHz 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_169344[] __initdata = {
+       { .frequency = 78019200,        .index = PLLVAL(121, 5, 3),     },      /* FVco 624.153600 */
+       { .frequency = 84067200,        .index = PLLVAL(131, 5, 3),     },      /* FVco 672.537600 */
+       { .frequency = 90115200,        .index = PLLVAL(141, 5, 3),     },      /* FVco 720.921600 */
+       { .frequency = 96163200,        .index = PLLVAL(151, 5, 3),     },      /* FVco 769.305600 */
+       { .frequency = 102135600,       .index = PLLVAL(185, 6, 3),     },      /* FVco 817.084800 */
+       { .frequency = 108259200,       .index = PLLVAL(171, 5, 3),     },      /* FVco 866.073600 */
+       { .frequency = 114307200,       .index = PLLVAL(127, 3, 3),     },      /* FVco 914.457600 */
+       { .frequency = 120234240,       .index = PLLVAL(134, 3, 3),     },      /* FVco 961.873920 */
+       { .frequency = 126161280,       .index = PLLVAL(141, 3, 3),     },      /* FVco 1009.290240 */
+       { .frequency = 132088320,       .index = PLLVAL(148, 3, 3),     },      /* FVco 1056.706560 */
+       { .frequency = 138015360,       .index = PLLVAL(155, 3, 3),     },      /* FVco 1104.122880 */
+       { .frequency = 144789120,       .index = PLLVAL(163, 3, 3),     },      /* FVco 1158.312960 */
+       { .frequency = 150100363,       .index = PLLVAL(187, 9, 2),     },      /* FVco 600.401454 */
+       { .frequency = 156038400,       .index = PLLVAL(121, 5, 2),     },      /* FVco 624.153600 */
+       { .frequency = 162086400,       .index = PLLVAL(126, 5, 2),     },      /* FVco 648.345600 */
+       { .frequency = 168134400,       .index = PLLVAL(131, 5, 2),     },      /* FVco 672.537600 */
+       { .frequency = 174048000,       .index = PLLVAL(177, 7, 2),     },      /* FVco 696.192000 */
+       { .frequency = 180230400,       .index = PLLVAL(141, 5, 2),     },      /* FVco 720.921600 */
+       { .frequency = 186278400,       .index = PLLVAL(124, 4, 2),     },      /* FVco 745.113600 */
+       { .frequency = 192326400,       .index = PLLVAL(151, 5, 2),     },      /* FVco 769.305600 */
+       { .frequency = 198132480,       .index = PLLVAL(109, 3, 2),     },      /* FVco 792.529920 */
+       { .frequency = 204271200,       .index = PLLVAL(185, 6, 2),     },      /* FVco 817.084800 */
+       { .frequency = 210268800,       .index = PLLVAL(141, 4, 2),     },      /* FVco 841.075200 */
+       { .frequency = 216518400,       .index = PLLVAL(171, 5, 2),     },      /* FVco 866.073600 */
+       { .frequency = 222264000,       .index = PLLVAL(97, 2, 2),      },      /* FVco 889.056000 */
+       { .frequency = 228614400,       .index = PLLVAL(127, 3, 2),     },      /* FVco 914.457600 */
+       { .frequency = 234259200,       .index = PLLVAL(158, 4, 2),     },      /* FVco 937.036800 */
+       { .frequency = 240468480,       .index = PLLVAL(134, 3, 2),     },      /* FVco 961.873920 */
+       { .frequency = 246960000,       .index = PLLVAL(167, 4, 2),     },      /* FVco 987.840000 */
+       { .frequency = 252322560,       .index = PLLVAL(141, 3, 2),     },      /* FVco 1009.290240 */
+       { .frequency = 258249600,       .index = PLLVAL(114, 2, 2),     },      /* FVco 1032.998400 */
+       { .frequency = 264176640,       .index = PLLVAL(148, 3, 2),     },      /* FVco 1056.706560 */
+       { .frequency = 270950400,       .index = PLLVAL(120, 2, 2),     },      /* FVco 1083.801600 */
+       { .frequency = 276030720,       .index = PLLVAL(155, 3, 2),     },      /* FVco 1104.122880 */
+       { .frequency = 282240000,       .index = PLLVAL(92, 1, 2),      },      /* FVco 1128.960000 */
+       { .frequency = 289578240,       .index = PLLVAL(163, 3, 2),     },      /* FVco 1158.312960 */
+       { .frequency = 294235200,       .index = PLLVAL(131, 2, 2),     },      /* FVco 1176.940800 */
+       { .frequency = 300200727,       .index = PLLVAL(187, 9, 1),     },      /* FVco 600.401454 */
+       { .frequency = 306358690,       .index = PLLVAL(191, 9, 1),     },      /* FVco 612.717380 */
+       { .frequency = 312076800,       .index = PLLVAL(121, 5, 1),     },      /* FVco 624.153600 */
+       { .frequency = 318366720,       .index = PLLVAL(86, 3, 1),      },      /* FVco 636.733440 */
+       { .frequency = 324172800,       .index = PLLVAL(126, 5, 1),     },      /* FVco 648.345600 */
+       { .frequency = 330220800,       .index = PLLVAL(109, 4, 1),     },      /* FVco 660.441600 */
+       { .frequency = 336268800,       .index = PLLVAL(131, 5, 1),     },      /* FVco 672.537600 */
+       { .frequency = 342074880,       .index = PLLVAL(93, 3, 1),      },      /* FVco 684.149760 */
+       { .frequency = 348096000,       .index = PLLVAL(177, 7, 1),     },      /* FVco 696.192000 */
+       { .frequency = 355622400,       .index = PLLVAL(118, 4, 1),     },      /* FVco 711.244800 */
+       { .frequency = 360460800,       .index = PLLVAL(141, 5, 1),     },      /* FVco 720.921600 */
+       { .frequency = 366206400,       .index = PLLVAL(165, 6, 1),     },      /* FVco 732.412800 */
+       { .frequency = 372556800,       .index = PLLVAL(124, 4, 1),     },      /* FVco 745.113600 */
+       { .frequency = 378201600,       .index = PLLVAL(126, 4, 1),     },      /* FVco 756.403200 */
+       { .frequency = 384652800,       .index = PLLVAL(151, 5, 1),     },      /* FVco 769.305600 */
+       { .frequency = 391608000,       .index = PLLVAL(177, 6, 1),     },      /* FVco 783.216000 */
+       { .frequency = 396264960,       .index = PLLVAL(109, 3, 1),     },      /* FVco 792.529920 */
+       { .frequency = 402192000,       .index = PLLVAL(87, 2, 1),      },      /* FVco 804.384000 */
+};
+
+static int s3c2440_plls169344_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 == 169344000) {
+               printk(KERN_INFO "Using PLL table for 16.9344MHz crystal\n");
+               return s3c_plltab_register(s3c2440_plls_169344,
+                                          ARRAY_SIZE(s3c2440_plls_169344));
+       }
+
+       return 0;
+}
+
+static struct sysdev_driver s3c2440_plls169344_drv = {
+       .add    = s3c2440_plls169344_add,
+};
+
+static int __init s3c2440_pll_16934400(void)
+{
+       return sysdev_driver_register(&s3c2440_sysclass,
+                                     &s3c2440_plls169344_drv);
+
+}
+
+arch_initcall(s3c2440_pll_16934400);
+
+static struct sysdev_driver s3c2442_plls169344_drv = {
+       .add    = s3c2440_plls169344_add,
+};
+
+static int __init s3c2442_pll_16934400(void)
+{
+       return sysdev_driver_register(&s3c2442_sysclass,
+                                     &s3c2442_plls169344_drv);
+
+}
+
+arch_initcall(s3c2442_pll_16934400);