Tim Wawrzynczak has submitted this change. ( https://review.coreboot.org/c/coreboot/+/45053 )
Change subject: mb/google/volteer: Add settings for noise mitgation ......................................................................
mb/google/volteer: Add settings for noise mitgation
Enable acoustic noise mitgation for volteer platforms.
BUG=b:153015585 BRANCH=none TEST= Measure the change in noise level by changing the values in devicetree.
Signed-off-by: Shaunak Saha shaunak.saha@intel.com Change-Id: I69a6453091bf607d3c5847c99bc077e6b7dbc639 Reviewed-on: https://review.coreboot.org/c/coreboot/+/45053 Reviewed-by: Duncan Laurie dlaurie@chromium.org Tested-by: build bot (Jenkins) no-reply@coreboot.org --- M src/mainboard/google/volteer/variants/delbin/overridetree.cb M src/mainboard/google/volteer/variants/volteer/overridetree.cb M src/mainboard/google/volteer/variants/volteer2/overridetree.cb 3 files changed, 33 insertions(+), 0 deletions(-)
Approvals: build bot (Jenkins): Verified Duncan Laurie: Looks good to me, approved Shaunak Saha: Looks good to me, but someone else must approve
diff --git a/src/mainboard/google/volteer/variants/delbin/overridetree.cb b/src/mainboard/google/volteer/variants/delbin/overridetree.cb index 21b1f07..5ecfccf 100644 --- a/src/mainboard/google/volteer/variants/delbin/overridetree.cb +++ b/src/mainboard/google/volteer/variants/delbin/overridetree.cb @@ -2,6 +2,17 @@ register "DdiPort1Hpd" = "0" register "DdiPort2Hpd" = "0"
+ # Acoustic settings + register "AcousticNoiseMitigation" = "1" + register "SlowSlewRate[VR_DOMAIN_IA]" = "SLEW_FAST_8" + register "SlowSlewRate[VR_DOMAIN_GT]" = "SLEW_FAST_8" + register "SlowSlewRate[VR_DOMAIN_SA]" = "SLEW_FAST_8" + register "SlowSlewRate[VR_DOMAIN_VLCC]" = "SLEW_FAST_8" + register "FastPkgCRampDisable[VR_DOMAIN_IA]" = "1" + register "FastPkgCRampDisable[VR_DOMAIN_GT]" = "1" + register "FastPkgCRampDisable[VR_DOMAIN_SA]" = "1" + register "FastPkgCRampDisable[VR_DOMAIN_VLCC]" = "1" + device domain 0 on device ref i2c0 on chip drivers/i2c/generic diff --git a/src/mainboard/google/volteer/variants/volteer/overridetree.cb b/src/mainboard/google/volteer/variants/volteer/overridetree.cb index 2c120d5..c5b4c72 100644 --- a/src/mainboard/google/volteer/variants/volteer/overridetree.cb +++ b/src/mainboard/google/volteer/variants/volteer/overridetree.cb @@ -49,6 +49,17 @@
register "HybridStorageMode" = "1"
+ # Acoustic settings + register "AcousticNoiseMitigation" = "1" + register "SlowSlewRate[VR_DOMAIN_IA]" = "SLEW_FAST_8" + register "SlowSlewRate[VR_DOMAIN_GT]" = "SLEW_FAST_8" + register "SlowSlewRate[VR_DOMAIN_SA]" = "SLEW_FAST_8" + register "SlowSlewRate[VR_DOMAIN_VLCC]" = "SLEW_FAST_8" + register "FastPkgCRampDisable[VR_DOMAIN_IA]" = "1" + register "FastPkgCRampDisable[VR_DOMAIN_GT]" = "1" + register "FastPkgCRampDisable[VR_DOMAIN_SA]" = "1" + register "FastPkgCRampDisable[VR_DOMAIN_VLCC]" = "1" + device domain 0 on device ref ipu on end device ref i2c0 on diff --git a/src/mainboard/google/volteer/variants/volteer2/overridetree.cb b/src/mainboard/google/volteer/variants/volteer2/overridetree.cb index d49a52a..2db1f08 100644 --- a/src/mainboard/google/volteer/variants/volteer2/overridetree.cb +++ b/src/mainboard/google/volteer/variants/volteer2/overridetree.cb @@ -7,6 +7,17 @@
register "HybridStorageMode" = "1"
+ # Acoustic settings + register "AcousticNoiseMitigation" = "1" + register "SlowSlewRate[VR_DOMAIN_IA]" = "SLEW_FAST_8" + register "SlowSlewRate[VR_DOMAIN_GT]" = "SLEW_FAST_8" + register "SlowSlewRate[VR_DOMAIN_SA]" = "SLEW_FAST_8" + register "SlowSlewRate[VR_DOMAIN_VLCC]" = "SLEW_FAST_8" + register "FastPkgCRampDisable[VR_DOMAIN_IA]" = "1" + register "FastPkgCRampDisable[VR_DOMAIN_GT]" = "1" + register "FastPkgCRampDisable[VR_DOMAIN_SA]" = "1" + register "FastPkgCRampDisable[VR_DOMAIN_VLCC]" = "1" + device domain 0 on device ref dptf on chip drivers/intel/dptf