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| author | Subrata Banik <subrata.banik@intel.com> | 2019-11-18 14:10:35 +0530 |
|---|---|---|
| committer | Subrata Banik <subrata.banik@intel.com> | 2020-02-01 02:19:36 +0000 |
| commit | a017e5fb3dda5ea6bbc94ee15b2e981eeaa2d918 (patch) | |
| tree | 17c0e90ac5b3d558c8ecff10266bb4c579830863 | |
| parent | 24d0ed79785c07fcea7bb55b8e1cf1ca08f54cfe (diff) | |
| download | coreboot-a017e5fb3dda5ea6bbc94ee15b2e981eeaa2d918.tar.xz | |
mb/google/hatch: Override CPU flex ratio
This patch overrides CPU flex ratio on hatch in order to get
better boot time numbers in vboot_reference.
BUG=b:142264107
TEST=Able to save ~100ms of platform boot time while running with
lower cpu flex ratio (i.e. freq ~1500MHz)
Without this CL
1100:finished vboot kernel verification 802,443 (148,108)
With this CL
1100:finished vboot kernel verification 685,382 (46,496)
Change-Id: Idd1d1c0c04b1f742f17227a1335f27a956ee940d
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36865
Reviewed-by: V Sowmya <v.sowmya@intel.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Pratikkumar V Prajapati <pratikkumar.v.prajapati@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
| -rw-r--r-- | src/mainboard/google/hatch/variants/baseboard/devicetree.cb | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/mainboard/google/hatch/variants/baseboard/devicetree.cb b/src/mainboard/google/hatch/variants/baseboard/devicetree.cb index b4d7afd42d..e0291bbd3f 100644 --- a/src/mainboard/google/hatch/variants/baseboard/devicetree.cb +++ b/src/mainboard/google/hatch/variants/baseboard/devicetree.cb @@ -194,6 +194,9 @@ chip soc/intel/cannonlake register "gpio_pm[COMM_3]" = "0" register "gpio_pm[COMM_4]" = "0" + # CPU Ratio Override + register "cpu_ratio_override" = "15" + # chipset_lockdown configuration # Use below format to override value in overridetree.cb if required # format: |