diff options
| author | Subrata Banik <subratabanik@google.com> | 2023-04-01 14:55:07 +0530 |
|---|---|---|
| committer | Subrata Banik <subratabanik@google.com> | 2023-04-02 10:07:21 +0000 |
| commit | 450699d1c8e9b0305c1f0d9872f8f4a45983103e (patch) | |
| tree | 4e794095703f3bc57c54ce6e0568ae98abe90456 | |
| parent | d0d7f4710410bbf7d5ca7e89c740cf9f5d872a82 (diff) | |
soc/intel/meteorlake: Set Power Performance Platform Override
According to document 640858 MTL EDS Vol2, bit 18 (PWR_PERF_PLATFRM_OVR) of MSR_POWER_CTL must be set.
This patch is backported from
`commit 117770d32468e63df ("soc/intel/
alderlake: Enable Energy/Performance Bias control")`.
Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: Ic83225b619c49db0b49b521a83a2f1dc1ad69be8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74155
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
| -rw-r--r-- | src/soc/intel/meteorlake/cpu.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/soc/intel/meteorlake/cpu.c b/src/soc/intel/meteorlake/cpu.c index 62639a1992..691f50d0d9 100644 --- a/src/soc/intel/meteorlake/cpu.c +++ b/src/soc/intel/meteorlake/cpu.c @@ -72,10 +72,11 @@ static void configure_misc(void) msr.hi = 0; wrmsr(IA32_PACKAGE_THERM_INTERRUPT, msr); - /* Enable PROCHOT */ + /* Enable PROCHOT and Power Performance Platform Override */ msr = rdmsr(MSR_POWER_CTL); msr.lo |= (1 << 0); /* Enable Bi-directional PROCHOT as an input*/ msr.lo |= (1 << 23); /* Lock it */ + msr.lo |= (1 << 18); /* Power Performance Platform Override */ wrmsr(MSR_POWER_CTL, msr); } |