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/arch/mips/ar7/time.c

https://bitbucket.org/thekraven/iscream_thunderc-2.6.35
C | 40 lines | 16 code | 5 blank | 19 comment | 1 complexity | 473aaeaf1bb050fb3345f75f0041d83c MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
 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	cpu_clk = clk_get(NULL, "cpu");
34	if (IS_ERR(cpu_clk)) {
35		printk(KERN_ERR "unable to get cpu clock\n");
36		return;
37	}
38
39	mips_hpt_frequency = clk_get_rate(cpu_clk) / 2;
40}