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authorMAULIK V VAGHELA <maulik.v.vaghela@intel.com>2022-03-07 09:55:52 +0530
committerNick Vaccaro <nvaccaro@google.com>2022-03-15 18:11:37 +0000
commita4cdb5b381c92079ad7dae68b02599f3e7cec063 (patch)
tree56866baa6483a4538bd0136829e5b8cf8a55b54b /src/mainboard/facebook/monolith/cmos.layout
parent99356386a6e4f976c0070723611fd9f7a286ba3e (diff)
mb/google/brya: Disable C1-state auto demotion for Brya & Brask
C1-state auto demotion feature allows hardware to determine C1-state as per platform policy. Since Brya sets performance policy to balanced from hardware, auto demotion can be disabled without performance impact. Also, disabling this feature results in 110 mW power savings during video playback. Note that C1state Autodemotion feature is not applicable for ADL-P SoC. Hence recommendation is to keep it disabled. BUG=b:221876248 BRANCH=firmware-brya-14505.B TEST=Code compiles and correct value of c1-state auto demotion is passed to FSP. Also power and performance impact has been measure by respective teams. Change-Id: I41eea916cdfe4a86e4d263e3191f5cb40fa33a90 Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/62630 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nick Vaccaro <nvaccaro@google.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Subrata Banik <subratabanik@google.com> Reviewed-by: Sridhar Siricilla <sridhar.siricilla@intel.com>
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