diff options
Diffstat (limited to 'arch/blackfin/mach-common/cpufreq.c')
| -rw-r--r-- | arch/blackfin/mach-common/cpufreq.c | 32 |
1 files changed, 6 insertions, 26 deletions
diff --git a/arch/blackfin/mach-common/cpufreq.c b/arch/blackfin/mach-common/cpufreq.c index 85c658083279..777582897253 100644 --- a/arch/blackfin/mach-common/cpufreq.c +++ b/arch/blackfin/mach-common/cpufreq.c @@ -1,30 +1,9 @@ /* - * File: arch/blackfin/mach-common/cpufreq.c - * Based on: - * Author: + * Blackfin core clock scaling * - * Created: - * Description: Blackfin core clock scaling + * Copyright 2008-2009 Analog Devices Inc. * - * Modified: - * Copyright 2004-2008 Analog Devices Inc. - * - * Bugs: Enter bugs at http://blackfin.uclinux.org/ - * - * 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, see the file COPYING, or write - * to the Free Software Foundation, Inc., - * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * Licensed under the GPL-2 or later. */ #include <linux/kernel.h> @@ -34,7 +13,7 @@ #include <linux/fs.h> #include <asm/blackfin.h> #include <asm/time.h> - +#include <asm/dpmc.h> /* this is the table of CCLK frequencies, in Hz */ /* .index is the entry in the auxillary dpm_state_table[] */ @@ -159,7 +138,8 @@ static int __init __bfin_cpu_init(struct cpufreq_policy *policy) dpm_state_table[index].tscale); } - policy->cpuinfo.transition_latency = (bfin_read_PLL_LOCKCNT() / (sclk / 1000000)) * 1000; + policy->cpuinfo.transition_latency = 50000; /* 50us assumed */ + /*Now ,only support one cpu */ policy->cur = cclk; cpufreq_frequency_table_get_attr(bfin_freq_table, policy->cpu); |