blob: 931d26d1a54bdadca173d6dd197d7767c731564a [file] [log] [blame]
Ben Dooksa21765a2007-02-11 18:31:01 +01001/* linux/arch/arm/plat-s3c24xx/clock.c
2 *
3 * Copyright (c) 2004-2005 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
5 *
6 * S3C24XX Core clock control support
7 *
8 * Based on, and code from linux/arch/arm/mach-versatile/clock.c
9 **
10 ** Copyright (C) 2004 ARM Limited.
11 ** Written by Deep Blue Solutions Limited.
12 *
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27*/
28
29#include <linux/init.h>
Ben Dooksa21765a2007-02-11 18:31:01 +010030#include <linux/kernel.h>
Ben Dooksa21765a2007-02-11 18:31:01 +010031#include <linux/clk.h>
Russell Kingfced80c2008-09-06 12:10:45 +010032#include <linux/io.h>
Ben Dooksa21765a2007-02-11 18:31:01 +010033
Russell Kinga09e64f2008-08-05 16:14:15 +010034#include <mach/hardware.h>
Ben Dooksa21765a2007-02-11 18:31:01 +010035#include <asm/irq.h>
Ben Dooksa21765a2007-02-11 18:31:01 +010036
Russell Kinga09e64f2008-08-05 16:14:15 +010037#include <mach/regs-clock.h>
38#include <mach/regs-gpio.h>
Ben Dooksa21765a2007-02-11 18:31:01 +010039
Ben Dookse4253822008-10-21 14:06:38 +010040#include <plat/cpu-freq.h>
41
Ben Dooksd5120ae2008-10-07 23:09:51 +010042#include <plat/clock.h>
Ben Dooksa2b7ba92008-10-07 22:26:09 +010043#include <plat/cpu.h>
Ben Dookse24b8642008-10-21 14:06:34 +010044#include <plat/pll.h>
Ben Dooksa21765a2007-02-11 18:31:01 +010045
Uwe Kleine-König421f91d2010-06-11 12:17:00 +020046/* initialise all the clocks */
Ben Dooksa21765a2007-02-11 18:31:01 +010047
Ben Dookse4253822008-10-21 14:06:38 +010048void __init_or_cpufreq s3c24xx_setup_clocks(unsigned long fclk,
49 unsigned long hclk,
50 unsigned long pclk)
Ben Dooksa21765a2007-02-11 18:31:01 +010051{
Ben Dookse4253822008-10-21 14:06:38 +010052 clk_upll.rate = s3c24xx_get_pll(__raw_readl(S3C2410_UPLLCON),
53 clk_xtal.rate);
Ben Dooksa21765a2007-02-11 18:31:01 +010054
55 clk_mpll.rate = fclk;
56 clk_h.rate = hclk;
57 clk_p.rate = pclk;
58 clk_f.rate = fclk;
Ben Dookse4253822008-10-21 14:06:38 +010059}