Hello build bot (Jenkins), Tim Wawrzynczak, Nick Vaccaro, Tim Wawrzynczak, Raj Astekar, Patrick Rudolph,
I'd like you to reexamine a change. Please visit
https://review.coreboot.org/c/coreboot/+/46438
to look at the new patch set (#4).
Change subject: soc/intel/tigerlake: Disable C1 C-state Demotion ......................................................................
soc/intel/tigerlake: Disable C1 C-state Demotion
Disable C1 C-state auto demotion to decrease SoC power usage.
When set, processor will conditionally demote C3/C6/C7 requests to C1 based on uncore auto-demote information.
BUG=b:161215906 TEST=Measure and confirm SoC power usage reduction for key use cases eg 'Google Meets video call'
Measured on instrumented boards for Volteer EVT and Delbin.
Below measurements for Volteer:
Google meets with 720p w/ auto-demotion w/o auto-demotion System Power 13.14W 9.4W SOC Power 7.9W 5.4W
Signed-off-by: Ravi Sarawadi ravishankar.sarawadi@intel.com Signed-off-by: Shweta Malik shweta.malik@intel.com Change-Id: I649cafbaf03917d76521aa5f76ec58d218e1a1b1 --- M src/soc/intel/tigerlake/fsp_params.c 1 file changed, 4 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/38/46438/4