Patrick Georgi (pgeorgi@google.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/13589
-gerrit
commit 320a4b0cddaea9446d2c3f72763ebafb5501bb4c Author: Archana Patni archana.patni@intel.com Date: Sat Dec 19 00:10:17 2015 +0530
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 --- src/mainboard/google/chell/devicetree.cb | 1 + src/mainboard/google/glados/devicetree.cb | 1 + src/mainboard/google/lars/devicetree.cb | 1 + src/mainboard/intel/kunimitsu/devicetree.cb | 1 + 4 files changed, 4 insertions(+)
diff --git a/src/mainboard/google/chell/devicetree.cb b/src/mainboard/google/chell/devicetree.cb index ffc805c..ac3a5c1 100644 --- a/src/mainboard/google/chell/devicetree.cb +++ b/src/mainboard/google/chell/devicetree.cb @@ -50,6 +50,7 @@ chip soc/intel/skylake register "PmConfigSlpS4MinAssert" = "1" # 1s register "PmConfigSlpSusMinAssert" = "1" # 500ms register "PmConfigSlpAMinAssert" = "3" # 2s + register "PmTimerDisabled" = "1"
# VR Settings Configuration for 5 Domains #+----------------+-------+-------+-------------+-------------+-------+ diff --git a/src/mainboard/google/glados/devicetree.cb b/src/mainboard/google/glados/devicetree.cb index c3aae8c..894f0e1 100644 --- a/src/mainboard/google/glados/devicetree.cb +++ b/src/mainboard/google/glados/devicetree.cb @@ -50,6 +50,7 @@ chip soc/intel/skylake register "PmConfigSlpS4MinAssert" = "1" # 1s register "PmConfigSlpSusMinAssert" = "1" # 500ms register "PmConfigSlpAMinAssert" = "3" # 2s + register "PmTimerDisabled" = "1"
# VR Settings Configuration for 5 Domains #+----------------+-------+-------+-------------+-------------+-------+ diff --git a/src/mainboard/google/lars/devicetree.cb b/src/mainboard/google/lars/devicetree.cb index c601507..bc39f3e 100644 --- a/src/mainboard/google/lars/devicetree.cb +++ b/src/mainboard/google/lars/devicetree.cb @@ -32,6 +32,7 @@ chip soc/intel/skylake register "HeciEnabled" = "0" register "SaGv" = "3" register "FspSkipMpInit" = "1" + 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 diff --git a/src/mainboard/intel/kunimitsu/devicetree.cb b/src/mainboard/intel/kunimitsu/devicetree.cb index 73eced1..d2a70c8 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