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skylake: Update the thermal time window for throttling action 

This patch reduces the thermal time window to 100 milliseconds
for fast throttling action at prochot.

BUG=chrome-os-partner:59397
BRANCH=None.
TEST=Built for skylake platform and verified the thermal time
window value.

Change-Id: If79d213cb8e19277ffdb882267d2f8672df93446
Signed-off-by: Sumeet Pawnikar <sumeet.r.pawnikar@intel.com>
Reviewed-on: https://review.coreboot.org/17384
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Sumeet Pawnikar 2016-11-11 17:11:28 +05:30 committed by Martin Roth
parent 5b8c4a7bca
commit 8b3004e2fc
1 changed files with 4 additions and 0 deletions
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4
src/soc/intel/skylake/cpu.c
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@ -205,6 +205,10 @@ static void configure_thermal_target(void)
msr.lo |= (conf->tcc_offset & 0xf) << 24; msr.lo |= (conf->tcc_offset & 0xf) << 24;
wrmsr(MSR_TEMPERATURE_TARGET, msr); wrmsr(MSR_TEMPERATURE_TARGET, msr);
} }
msr = rdmsr(MSR_TEMPERATURE_TARGET);
msr.lo &= ~0x7f; /* Bits 6:0 */
msr.lo |= 0xe6; /* setting 100ms thermal time window */
wrmsr(MSR_TEMPERATURE_TARGET, msr);
} }
static void configure_isst(void) static void configure_isst(void)