From: Ben Dooks <ben@simtec.co.uk>
Date: Thu, 30 Jul 2009 22:23:28 +0000 (+0100)
Subject: ARM: S3C2410: CPUFREQ: Add PLL table
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=438a09e1eb01c3f0d4cddde97ed9caae652f910b;p=linux-beck.git

ARM: S3C2410: CPUFREQ: Add PLL table

Add PLL table for the S3C2410 SoC.

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

diff --git a/arch/arm/mach-s3c2410/Kconfig b/arch/arm/mach-s3c2410/Kconfig
index a7f70e18ccb4..d8c023d4df30 100644
--- a/arch/arm/mach-s3c2410/Kconfig
+++ b/arch/arm/mach-s3c2410/Kconfig
@@ -55,6 +55,13 @@ config S3C2410_CPUFREQ
 	help
 	  CPU Frequency scaling support for S3C2410
 
+config S3C2410_PLLTABLE
+	bool
+	depends on S3C2410_CPUFREQ && CPU_FREQ_S3C24XX_PLL
+	default y
+	help
+	  Select the PLL table for the S3C2410
+
 menu "S3C2410 Machines"
 
 config ARCH_SMDK2410
diff --git a/arch/arm/mach-s3c2410/Makefile b/arch/arm/mach-s3c2410/Makefile
index cc25eb0eb2cd..2ab5ba4b266f 100644
--- a/arch/arm/mach-s3c2410/Makefile
+++ b/arch/arm/mach-s3c2410/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_CPU_S3C2410_DMA)	+= dma.o
 obj-$(CONFIG_S3C2410_PM)	+= pm.o sleep.o
 obj-$(CONFIG_S3C2410_GPIO)	+= gpio.o
 obj-$(CONFIG_S3C2410_CPUFREQ)	+= cpu-freq.o
+obj-$(CONFIG_S3C2410_PLLTABLE)	+= pll.o
 
 # Machine support
 
diff --git a/arch/arm/mach-s3c2410/pll.c b/arch/arm/mach-s3c2410/pll.c
new file mode 100644
index 000000000000..f178c2fd9d85
--- /dev/null
+++ b/arch/arm/mach-s3c2410/pll.c
@@ -0,0 +1,95 @@
+/* arch/arm/mach-s3c2410/pll.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>
+ *
+ * S3C2410 CPU PLL tables
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sysdev.h>
+#include <linux/list.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+
+#include <plat/cpu.h>
+#include <plat/cpu-freq-core.h>
+
+static struct cpufreq_frequency_table pll_vals_12MHz[] = {
+    { .frequency = 34000000,  .index = PLLVAL(82, 2, 3),   },
+    { .frequency = 45000000,  .index = PLLVAL(82, 1, 3),   },
+    { .frequency = 51000000,  .index = PLLVAL(161, 3, 3),  },
+    { .frequency = 48000000,  .index = PLLVAL(120, 2, 3),  },
+    { .frequency = 56000000,  .index = PLLVAL(142, 2, 3),  },
+    { .frequency = 68000000,  .index = PLLVAL(82, 2, 2),   },
+    { .frequency = 79000000,  .index = PLLVAL(71, 1, 2),   },
+    { .frequency = 85000000,  .index = PLLVAL(105, 2, 2),  },
+    { .frequency = 90000000,  .index = PLLVAL(112, 2, 2),  },
+    { .frequency = 101000000, .index = PLLVAL(127, 2, 2),  },
+    { .frequency = 113000000, .index = PLLVAL(105, 1, 2),  },
+    { .frequency = 118000000, .index = PLLVAL(150, 2, 2),  },
+    { .frequency = 124000000, .index = PLLVAL(116, 1, 2),  },
+    { .frequency = 135000000, .index = PLLVAL(82, 2, 1),   },
+    { .frequency = 147000000, .index = PLLVAL(90, 2, 1),   },
+    { .frequency = 152000000, .index = PLLVAL(68, 1, 1),   },
+    { .frequency = 158000000, .index = PLLVAL(71, 1, 1),   },
+    { .frequency = 170000000, .index = PLLVAL(77, 1, 1),   },
+    { .frequency = 180000000, .index = PLLVAL(82, 1, 1),   },
+    { .frequency = 186000000, .index = PLLVAL(85, 1, 1),   },
+    { .frequency = 192000000, .index = PLLVAL(88, 1, 1),   },
+    { .frequency = 203000000, .index = PLLVAL(161, 3, 1),  },
+
+    /* 2410A extras */
+
+    { .frequency = 210000000, .index = PLLVAL(132, 2, 1),  },
+    { .frequency = 226000000, .index = PLLVAL(105, 1, 1),  },
+    { .frequency = 266000000, .index = PLLVAL(125, 1, 1),  },
+    { .frequency = 268000000, .index = PLLVAL(126, 1, 1),  },
+    { .frequency = 270000000, .index = PLLVAL(127, 1, 1),  },
+};
+
+static int s3c2410_plls_add(struct sys_device *dev)
+{
+	return s3c_plltab_register(pll_vals_12MHz, ARRAY_SIZE(pll_vals_12MHz));
+}
+
+static struct sysdev_driver s3c2410_plls_drv = {
+	.add	= s3c2410_plls_add,
+};
+
+static int __init s3c2410_pll_init(void)
+{
+	return sysdev_driver_register(&s3c2410_sysclass, &s3c2410_plls_drv);
+
+}
+
+arch_initcall(s3c2410_pll_init);
+
+static struct sysdev_driver s3c2410a_plls_drv = {
+	.add	= s3c2410_plls_add,
+};
+
+static int __init s3c2410a_pll_init(void)
+{
+	return sysdev_driver_register(&s3c2410a_sysclass, &s3c2410a_plls_drv);
+}
+
+arch_initcall(s3c2410a_pll_init);