[coreboot-gerrit] Change in coreboot[master]: mb/google/dedede/var/magolor: Configure Acoustic noise mitigation UPDs

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change. ( https://review.coreboot.org/c/coreboot/+/50099 )

Change subject: mb/google/dedede/var/magolor: Configure Acoustic noise mitigation UPDs
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mb/google/dedede/var/magolor: Configure Acoustic noise mitigation UPDs

Enable Acoustic noise mitigation for magolor and set slew rate to 1/8
which is calibrated value for the board.

BUG=b:178678267
BRANCH=dedede
TEST=build firmware to UPD and Acoustic noise test

Signed-off-by: Ren Kuo 
Change-Id: Idea2a801399bb5c7e0b8e59ee7a826c86a44f4ea
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50099
Reviewed-by: Karthik Ramasubramanian 
Tested-by: build bot (Jenkins) 
---
M src/mainboard/google/dedede/variants/magolor/overridetree.cb
1 file changed, 6 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Ren Kuo: Looks good to me, but someone else must approve
  Karthik Ramasubramanian: Looks good to me, approved

diff --git a/src/mainboard/google/dedede/variants/magolor/overridetree.cb b/src/mainboard/google/dedede/variants/magolor/overridetree.cb
index 78d5dde..23932c3 100644
--- a/src/mainboard/google/dedede/variants/magolor/overridetree.cb
+++ b/src/mainboard/google/dedede/variants/magolor/overridetree.cb
@@ -71,6 +71,12 @@

register "tcc_offset" = "15" # TCC of 90C

+	# Enable Acoustic noise mitigation and set slew rate to 1/8
+	# Rest of the parameters are 0 by default.
+	register "AcousticNoiseMitigation" = "1"
+	register "SlowSlewRate" = "SlewRateFastBy8"
+	register "FastPkgCRampDisable" = "1"
+
    device domain 0 on
    	device pci 04.0 on
    		chip drivers/intel/dptf