diff options
Diffstat (limited to 'arch/i386/kernel/cpu/cpufreq/p4-clockmod.c')
-rw-r--r-- | arch/i386/kernel/cpu/cpufreq/p4-clockmod.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c b/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c index 270f2188d68b..cc73a7ae34bc 100644 --- a/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c +++ b/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c | |||
@@ -52,6 +52,7 @@ enum { | |||
52 | 52 | ||
53 | 53 | ||
54 | static int has_N44_O17_errata[NR_CPUS]; | 54 | static int has_N44_O17_errata[NR_CPUS]; |
55 | static int has_N60_errata[NR_CPUS]; | ||
55 | static unsigned int stock_freq; | 56 | static unsigned int stock_freq; |
56 | static struct cpufreq_driver p4clockmod_driver; | 57 | static struct cpufreq_driver p4clockmod_driver; |
57 | static unsigned int cpufreq_p4_get(unsigned int cpu); | 58 | static unsigned int cpufreq_p4_get(unsigned int cpu); |
@@ -226,6 +227,12 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy) | |||
226 | case 0x0f12: | 227 | case 0x0f12: |
227 | has_N44_O17_errata[policy->cpu] = 1; | 228 | has_N44_O17_errata[policy->cpu] = 1; |
228 | dprintk("has errata -- disabling low frequencies\n"); | 229 | dprintk("has errata -- disabling low frequencies\n"); |
230 | break; | ||
231 | |||
232 | case 0x0f29: | ||
233 | has_N60_errata[policy->cpu] = 1; | ||
234 | dprintk("has errata -- disabling frequencies lower than 2ghz\n"); | ||
235 | break; | ||
229 | } | 236 | } |
230 | 237 | ||
231 | /* get max frequency */ | 238 | /* get max frequency */ |
@@ -237,6 +244,8 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy) | |||
237 | for (i=1; (p4clockmod_table[i].frequency != CPUFREQ_TABLE_END); i++) { | 244 | for (i=1; (p4clockmod_table[i].frequency != CPUFREQ_TABLE_END); i++) { |
238 | if ((i<2) && (has_N44_O17_errata[policy->cpu])) | 245 | if ((i<2) && (has_N44_O17_errata[policy->cpu])) |
239 | p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID; | 246 | p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID; |
247 | else if (has_N60_errata[policy->cpu] && p4clockmod_table[i].frequency < 2000000) | ||
248 | p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID; | ||
240 | else | 249 | else |
241 | p4clockmod_table[i].frequency = (stock_freq * i)/8; | 250 | p4clockmod_table[i].frequency = (stock_freq * i)/8; |
242 | } | 251 | } |