redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

Blackfin arch: fix bug - Cpufreq assumes clocks in kHz and not Hz. 

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
hifive-unleashed-5.1
Michael Hennerich 2008-10-28 14:18:29 +08:00 committed by Bryan Wu
parent da986b9fff
commit a10101d5ff
1 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
arch/blackfin/mach-common/cpufreq.c
View File

@ -72,13 +72,13 @@ unsigned int __bfin_cycles_mod;
/**************************************************************************/ /**************************************************************************/
static unsigned int bfin_getfreq(unsigned int cpu) static unsigned int bfin_getfreq_khz(unsigned int cpu)
{ {
/* The driver only support single cpu */ /* The driver only support single cpu */
if (cpu != 0) if (cpu != 0)
return -1; return -1;
return get_cclk(); return get_cclk() / 1000;
} }
@ -96,7 +96,7 @@ static int bfin_target(struct cpufreq_policy *policy,
cclk_hz = bfin_freq_table[index].frequency; cclk_hz = bfin_freq_table[index].frequency;
freqs.old = bfin_getfreq(0); freqs.old = bfin_getfreq_khz(0);
freqs.new = cclk_hz; freqs.new = cclk_hz;
freqs.cpu = 0; freqs.cpu = 0;
@ -137,8 +137,8 @@ static int __init __bfin_cpu_init(struct cpufreq_policy *policy)
if (policy->cpu != 0) if (policy->cpu != 0)
return -EINVAL; return -EINVAL;
cclk = get_cclk(); cclk = get_cclk() / 1000;
sclk = get_sclk(); sclk = get_sclk() / 1000;
#if ANOMALY_05000273 || (!defined(CONFIG_BF54x) && defined(CONFIG_BFIN_DCACHE)) #if ANOMALY_05000273 || (!defined(CONFIG_BF54x) && defined(CONFIG_BFIN_DCACHE))
min_cclk = sclk * 2; min_cclk = sclk * 2;
@ -152,7 +152,7 @@ static int __init __bfin_cpu_init(struct cpufreq_policy *policy)
dpm_state_table[index].csel = csel << 4; /* Shift now into PLL_DIV bitpos */ dpm_state_table[index].csel = csel << 4; /* Shift now into PLL_DIV bitpos */
dpm_state_table[index].tscale = (TIME_SCALE / (1 << csel)) - 1; dpm_state_table[index].tscale = (TIME_SCALE / (1 << csel)) - 1;
pr_debug("cpufreq: freq:%d csel:%d tscale:%d\n", pr_debug("cpufreq: freq:%d csel:0x%x tscale:%d\n",
bfin_freq_table[index].frequency, bfin_freq_table[index].frequency,
dpm_state_table[index].csel, dpm_state_table[index].csel,
dpm_state_table[index].tscale); dpm_state_table[index].tscale);
@ -173,7 +173,7 @@ static struct freq_attr *bfin_freq_attr[] = {
static struct cpufreq_driver bfin_driver = { static struct cpufreq_driver bfin_driver = {
.verify = bfin_verify_speed, .verify = bfin_verify_speed,
.target = bfin_target, .target = bfin_target,
.get = bfin_getfreq, .get = bfin_getfreq_khz,
.init = __bfin_cpu_init, .init = __bfin_cpu_init,
.name = "bfin cpufreq", .name = "bfin cpufreq",
.owner = THIS_MODULE, .owner = THIS_MODULE,