diff options
| author | Subrata Banik <subrata.banik@intel.com> | 2019-07-29 14:35:03 +0530 |
|---|---|---|
| committer | Subrata Banik <subrata.banik@intel.com> | 2019-08-03 10:23:11 +0000 |
| commit | eaee392cb323e2d4e9e6fd985dda4a0bbbeb5b87 (patch) | |
| tree | e06c382f32bd7b7d59550b2a55708afb9a93de37 | |
| parent | 3f98d41b6e546223d8a13245ad197f0d67b4e094 (diff) | |
mb/google/hatch: Enable PmTimerDisabled config to reduce S0ix power usage
BRANCH=none
BUG=b:138152075
TEST=Build for cometlake board with the PmTimerDisabled policy in
devicetree set to 1.
With PmTimerDisabled = 0
>> iotools mmio_read8 0xfe0018fc
0x00
With PmTimerDisabled = 1
>> iotools mmio_read8 0xfe0018fc
0x02
Bit 1: ACPI Timer Disable (ACPI_TIM_DIS): This bit determines
whether the ACPI Timer is enabled to run.
- 0: ACPI Timer is enabled
- 1: ACPI Timer is disabled
Change-Id: I83f49505a804c99d7978e5d541ea9fe8ead9b88f
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34611
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aamir Bohra <aamir.bohra@intel.com>
Reviewed-by: V Sowmya <v.sowmya@intel.com>
| -rw-r--r-- | src/mainboard/google/hatch/variants/baseboard/devicetree.cb | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mainboard/google/hatch/variants/baseboard/devicetree.cb b/src/mainboard/google/hatch/variants/baseboard/devicetree.cb index 14630a4ace..00198a5a81 100644 --- a/src/mainboard/google/hatch/variants/baseboard/devicetree.cb +++ b/src/mainboard/google/hatch/variants/baseboard/devicetree.cb @@ -52,6 +52,8 @@ chip soc/intel/cannonlake # putting it under register "common_soc_config" in overridetree.cb file. register "common_soc_config.pch_thermal_trip" = "77" + register "PmTimerDisabled" = "1" + # VR Settings Configuration for 4 Domains #+----------------+-------+-------+-------+-------+ #| Domain/Setting | SA | IA | GTUS | GTS | |