Initial import

1 files changed, 98 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c b/arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c
new file mode 100644
index 000000000..a19460e6e
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c
@@ -0,0 +1,98 @@
+/*
+ * 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/device.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,	.driver_data = PLLVAL(0x75, 3, 3),  }, 	/* FVco 600.000000 */
+	{ .frequency = 80000000,	.driver_data = PLLVAL(0x98, 4, 3),  }, 	/* FVco 640.000000 */
+	{ .frequency = 90000000,	.driver_data = PLLVAL(0x70, 2, 3),  }, 	/* FVco 720.000000 */
+	{ .frequency = 100000000,	.driver_data = PLLVAL(0x5c, 1, 3),  }, 	/* FVco 800.000000 */
+	{ .frequency = 110000000,	.driver_data = PLLVAL(0x66, 1, 3),  }, 	/* FVco 880.000000 */
+	{ .frequency = 120000000,	.driver_data = PLLVAL(0x70, 1, 3),  }, 	/* FVco 960.000000 */
+	{ .frequency = 150000000,	.driver_data = PLLVAL(0x75, 3, 2),  }, 	/* FVco 600.000000 */
+	{ .frequency = 160000000,	.driver_data = PLLVAL(0x98, 4, 2),  }, 	/* FVco 640.000000 */
+	{ .frequency = 170000000,	.driver_data = PLLVAL(0x4d, 1, 2),  }, 	/* FVco 680.000000 */
+	{ .frequency = 180000000,	.driver_data = PLLVAL(0x70, 2, 2),  }, 	/* FVco 720.000000 */
+	{ .frequency = 190000000,	.driver_data = PLLVAL(0x57, 1, 2),  }, 	/* FVco 760.000000 */
+	{ .frequency = 200000000,	.driver_data = PLLVAL(0x5c, 1, 2),  }, 	/* FVco 800.000000 */
+	{ .frequency = 210000000,	.driver_data = PLLVAL(0x84, 2, 2),  }, 	/* FVco 840.000000 */
+	{ .frequency = 220000000,	.driver_data = PLLVAL(0x66, 1, 2),  }, 	/* FVco 880.000000 */
+	{ .frequency = 230000000,	.driver_data = PLLVAL(0x6b, 1, 2),  }, 	/* FVco 920.000000 */
+	{ .frequency = 240000000,	.driver_data = PLLVAL(0x70, 1, 2),  }, 	/* FVco 960.000000 */
+	{ .frequency = 300000000,	.driver_data = PLLVAL(0x75, 3, 1),  }, 	/* FVco 600.000000 */
+	{ .frequency = 310000000,	.driver_data = PLLVAL(0x93, 4, 1),  }, 	/* FVco 620.000000 */
+	{ .frequency = 320000000,	.driver_data = PLLVAL(0x98, 4, 1),  }, 	/* FVco 640.000000 */
+	{ .frequency = 330000000,	.driver_data = PLLVAL(0x66, 2, 1),  }, 	/* FVco 660.000000 */
+	{ .frequency = 340000000,	.driver_data = PLLVAL(0x4d, 1, 1),  }, 	/* FVco 680.000000 */
+	{ .frequency = 350000000,	.driver_data = PLLVAL(0xa7, 4, 1),  }, 	/* FVco 700.000000 */
+	{ .frequency = 360000000,	.driver_data = PLLVAL(0x70, 2, 1),  }, 	/* FVco 720.000000 */
+	{ .frequency = 370000000,	.driver_data = PLLVAL(0xb1, 4, 1),  }, 	/* FVco 740.000000 */
+	{ .frequency = 380000000,	.driver_data = PLLVAL(0x57, 1, 1),  }, 	/* FVco 760.000000 */
+	{ .frequency = 390000000,	.driver_data = PLLVAL(0x7a, 2, 1),  }, 	/* FVco 780.000000 */
+	{ .frequency = 400000000,	.driver_data = PLLVAL(0x5c, 1, 1),  }, 	/* FVco 800.000000 */
+};
+
+static int s3c2440_plls12_add(struct device *dev, struct subsys_interface *sif)
+{
+	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 subsys_interface s3c2440_plls12_interface = {
+	.name		= "s3c2440_plls12",
+	.subsys		= &s3c2440_subsys,
+	.add_dev	= s3c2440_plls12_add,
+};
+
+static int __init s3c2440_pll_12mhz(void)
+{
+	return subsys_interface_register(&s3c2440_plls12_interface);
+
+}
+arch_initcall(s3c2440_pll_12mhz);
+
+static struct subsys_interface s3c2442_plls12_interface = {
+	.name		= "s3c2442_plls12",
+	.subsys		= &s3c2442_subsys,
+	.add_dev	= s3c2440_plls12_add,
+};
+
+static int __init s3c2442_pll_12mhz(void)
+{
+	return subsys_interface_register(&s3c2442_plls12_interface);
+
+}
+arch_initcall(s3c2442_pll_12mhz);