diff options
| author | Marc Jones <marcj303@gmail.com> | 2009-01-06 16:45:42 +0000 |
|---|---|---|
| committer | Marc Jones <marc.jones@amd.com> | 2009-01-06 16:45:42 +0000 |
| commit | 505aaf56e21b94e52cfdeb16b765163f7604e1aa (patch) | |
| tree | ec774a5347a4d73c74f421fd46fe4ff29caa7aa2 /src/mainboard/amd/pistachio | |
| parent | fdbb8d860af012718c311aaf14e2f73dfbc0dfeb (diff) | |
The ACPI PSS CPU Pstate table was calculating the frequency incorrectly for
revF CPUs. The 100MHz/200MHz stepping is already handled in the FID setting
and doesn't need to be checked to set the fid_multiplier. The multiplier is
always 100.
Signed-off-by: Marc Jones <marcj303@gmail.com>
Acked-by: zheng bao <zheng.bao@amd.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3847 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/mainboard/amd/pistachio')
| -rw-r--r-- | src/mainboard/amd/pistachio/acpi_tables.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/src/mainboard/amd/pistachio/acpi_tables.c b/src/mainboard/amd/pistachio/acpi_tables.c index eb3433cc61..dfb9167481 100644 --- a/src/mainboard/amd/pistachio/acpi_tables.c +++ b/src/mainboard/amd/pistachio/acpi_tables.c @@ -258,12 +258,11 @@ u32 pstates_algorithm(acpi_header_t * dsdt) return 0; } - /*get the multipier of the fid frequency */ + /* Get the multipier of the fid frequency */ /* - * In RevG, 100MHz step is added + * Fid multiplier is always 100 revF and revG. */ - cpuid1 = cpuid(0x80000007); - fid_multiplier = ((cpuid1.edx & 0x40) >> 6) * 100; + fid_multiplier = 100; /* * Formula1: CPUFreq = FID * fid_multiplier + 800 |