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| author | Langsdorf, Mark <mark.langsdorf@amd.com> | 2005-11-29 14:18:03 -0600 |
|---|---|---|
| committer | Dave Jones <davej@redhat.com> | 2005-11-29 12:46:07 -0800 |
| commit | 019a61b99338d0ac05de25317b85da88e7ec4b35 (patch) | |
| tree | 51b3ed2180547ea582a43777244e11f84dd66e4f /arch/i386/kernel/cpu/cpufreq/powernow-k8.h | |
| parent | 8aae8284fece2b8fc404ccd40b7a30aa96f317b5 (diff) | |
| download | kernel_samsung_crespo-019a61b99338d0ac05de25317b85da88e7ec4b35.zip kernel_samsung_crespo-019a61b99338d0ac05de25317b85da88e7ec4b35.tar.gz kernel_samsung_crespo-019a61b99338d0ac05de25317b85da88e7ec4b35.tar.bz2 | |
[PATCH] Support 100 MHz frequency transitions
Future versions of the Opteron processor may support
frequency transitions of 100 MHz, instead of the=20
current 200 MHz. This patch enables the powernow-k8
driver to transition to an odd FID code, indicating
a multiple of 100 MHz frequency.
Signed-off-by: Jacob Shin <jacob.shin@amd.com>
Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com>
Signed-off-by: Dave Jones <davej@redhat.com>
Diffstat (limited to 'arch/i386/kernel/cpu/cpufreq/powernow-k8.h')
| -rw-r--r-- | arch/i386/kernel/cpu/cpufreq/powernow-k8.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/i386/kernel/cpu/cpufreq/powernow-k8.h b/arch/i386/kernel/cpu/cpufreq/powernow-k8.h index b1e85bb..d0de37d 100644 --- a/arch/i386/kernel/cpu/cpufreq/powernow-k8.h +++ b/arch/i386/kernel/cpu/cpufreq/powernow-k8.h @@ -42,7 +42,7 @@ struct powernow_k8_data { #define CPUID_XFAM 0x0ff00000 /* extended family */ #define CPUID_XFAM_K8 0 #define CPUID_XMOD 0x000f0000 /* extended model */ -#define CPUID_XMOD_REV_F 0x00040000 +#define CPUID_XMOD_REV_G 0x00060000 #define CPUID_USE_XFAM_XMOD 0x00000f00 #define CPUID_GET_MAX_CAPABILITIES 0x80000000 #define CPUID_FREQ_VOLT_CAPABILITIES 0x80000007 @@ -86,13 +86,14 @@ struct powernow_k8_data { * low fid table * - lowest entry in the high fid table must be a <= 200MHz + 2 * the entry * in the low fid table - * - the parts can only step at 200 MHz intervals, so 1.9 GHz is never valid + * - the parts can only step at <= 200 MHz intervals, odd fid values are + * supported in revision G and later revisions. * - lowest frequency must be >= interprocessor hypertransport link speed * (only applies to MP systems obviously) */ /* fids (frequency identifiers) are arranged in 2 tables - lo and hi */ -#define LO_FID_TABLE_TOP 6 /* fid values marking the boundary */ +#define LO_FID_TABLE_TOP 7 /* fid values marking the boundary */ #define HI_FID_TABLE_BOTTOM 8 /* between the low and high tables */ #define LO_VCOFREQ_TABLE_TOP 1400 /* corresponding vco frequency values */ @@ -106,7 +107,7 @@ struct powernow_k8_data { #define MIN_FREQ 800 /* Min and max freqs, per spec */ #define MAX_FREQ 5000 -#define INVALID_FID_MASK 0xffffffc1 /* not a valid fid if these bits are set */ +#define INVALID_FID_MASK 0xffffffc0 /* not a valid fid if these bits are set */ #define INVALID_VID_MASK 0xffffffc0 /* not a valid vid if these bits are set */ #define VID_OFF 0x3f |