1/* 2 * Carsten Langgaard, carstenl@mips.com 3 * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. 4 * 5 * This program is free software; you can distribute it and/or modify it 6 * under the terms of the GNU General Public License (Version 2) as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * for more details. 13 * 14 * You should have received a copy of the GNU General Public License along 15 * with this program; if not, write to the Free Software Foundation, Inc., 16 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. 17 * 18 * Setting up the clock on the MIPS boards. 19 */ 20 21#include <linux/init.h> 22#include <linux/time.h> 23#include <linux/err.h> 24#include <linux/clk.h> 25 26#include <asm/time.h> 27#include <asm/mach-ar7/ar7.h> 28 29void __init plat_time_init(void) 30{ 31 struct clk *cpu_clk; 32 33 /* Initialize ar7 clocks so the CPU clock frequency is correct */ 34 ar7_init_clocks(); 35 36 cpu_clk = clk_get(NULL, "cpu"); 37 if (IS_ERR(cpu_clk)) { 38 printk(KERN_ERR "unable to get cpu clock\n"); 39 return; 40 } 41 42 mips_hpt_frequency = clk_get_rate(cpu_clk) / 2; 43} 44