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| author | Archana Patni <archana.patni@intel.com> | 2015-12-19 00:10:17 +0530 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2016-02-04 17:44:50 +0100 |
| commit | 4af905ac95685500e71fb32cf5cec430d1a75447 (patch) | |
| tree | 1a3243a9ad1f86a6876dcea4b5d87b5d53b86735 /src/mainboard/intel/kunimitsu/devicetree.cb | |
| parent | 6c1bf27daee6470fb35383dd180bc9b4cb368eab (diff) | |
| download | coreboot-4af905ac95685500e71fb32cf5cec430d1a75447.tar.gz coreboot-4af905ac95685500e71fb32cf5cec430d1a75447.tar.bz2 coreboot-4af905ac95685500e71fb32cf5cec430d1a75447.zip | |
skylake boards: disable ACPI PM Timer
These devicetree patches set the ACPI PM Disabled variable to 1.
This will disable the ACPI PM timer and remove from FADT table.
BRANCH=none
BUG=chrome-os-partner:48646
TEST=Build for skylake board with the PmTimerDisabled policy in
devicetree set to 1.
iotools mmio_read32 0xfe0000fc should return 0x2.
cat /sys/devices/system/clocksource/clocksource0/available_clocksource
should list only "tsc hpet". acpi_pm should be removed from this list.
Change-Id: Ia66f37e13f0f2f527651418b8b5c337b56c25c7f
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: db3e8130495038850c7034b89701b4a5fcf88dce
Original-Change-Id: Ib1b876cfa361b8cbdde2f9e212e3da4fd724e498
Original-Signed-off-by: Archana Patni <archana.patni@intel.com>
Original-Signed-off-by: Subramony Sesha <subramony.sesha@intel.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/319362
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/13589
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/mainboard/intel/kunimitsu/devicetree.cb')
| -rw-r--r-- | src/mainboard/intel/kunimitsu/devicetree.cb | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mainboard/intel/kunimitsu/devicetree.cb b/src/mainboard/intel/kunimitsu/devicetree.cb index 73eced13b81e..d2a70c87115b 100644 --- a/src/mainboard/intel/kunimitsu/devicetree.cb +++ b/src/mainboard/intel/kunimitsu/devicetree.cb @@ -31,6 +31,7 @@ chip soc/intel/skylake register "Device4Enable" = "1" register "HeciEnabled" = "0" register "SaGv" = "3" + register "PmTimerDisabled" = "1" # Enabling SLP_S3#, SLP_S4#, SLP_SUS and SLP_A Stretch # SLP_S3 Minimum Assertion Width. Values 0: 60us, 1: 1ms, 2: 50ms, 3: 2s |