Change in coreboot[master]: mb/google/brya/var/primus: Configure Acoustic noise mitigation

[Casper Chang (Code Review)]

Casper Chang has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/60071 )

Change subject: mb/google/brya/var/primus: Configure Acoustic noise mitigation
......................................................................

mb/google/brya/var/primus: Configure Acoustic noise mitigation

- Enable Acoustic noise mitigation
- Set slow slew rate VCCIA and VCCGT to 8

BUG=b:204844399
TEST=USE="project_primus emerge-brya coreboot" and verify it builds
without error.

Signed-off-by: Casper Chang 
Change-Id: I0e0baf78a841278efda912cc5e4e9970329aacf6
---
M src/mainboard/google/brya/variants/primus/overridetree.cb
M src/mainboard/google/brya/variants/primus4es/overridetree.cb
2 files changed, 12 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/71/60071/1

diff --git a/src/mainboard/google/brya/variants/primus/overridetree.cb b/src/mainboard/google/brya/variants/primus/overridetree.cb
index ef5ad98..58c52a7 100644
--- a/src/mainboard/google/brya/variants/primus/overridetree.cb
+++ b/src/mainboard/google/brya/variants/primus/overridetree.cb
@@ -35,6 +35,12 @@
    register "gpio_pm[COMM_5]" = "0"
    register "SaGv" = "SaGv_Enabled"
    register "MaxDramSpeed" = "3733"
+	# Acoustic settings
+  	register "AcousticNoiseMitigation" = "1"
+  	register "SlowSlewRate[VR_DOMAIN_IA]" = "SLEW_FAST_8"
+  	register "SlowSlewRate[VR_DOMAIN_GT]" = "SLEW_FAST_8"
+  	register "FastPkgCRampDisable[VR_DOMAIN_IA]" = "1"
+  	register "FastPkgCRampDisable[VR_DOMAIN_GT]" = "1"

# Intel Common SoC Config
    #+-------------------+---------------------------+
diff --git a/src/mainboard/google/brya/variants/primus4es/overridetree.cb b/src/mainboard/google/brya/variants/primus4es/overridetree.cb
index ce06d30..22d61b0 100644
--- a/src/mainboard/google/brya/variants/primus4es/overridetree.cb
+++ b/src/mainboard/google/brya/variants/primus4es/overridetree.cb
@@ -35,6 +35,12 @@
    register "gpio_pm[COMM_5]" = "0"
    register "SaGv" = "SaGv_Enabled"
    register "MaxDramSpeed" = "3733"
+	# Acoustic settings
+  	register "AcousticNoiseMitigation" = "1"
+  	register "SlowSlewRate[VR_DOMAIN_IA]" = "SLEW_FAST_8"
+  	register "SlowSlewRate[VR_DOMAIN_GT]" = "SLEW_FAST_8"
+  	register "FastPkgCRampDisable[VR_DOMAIN_IA]" = "1"
+  	register "FastPkgCRampDisable[VR_DOMAIN_GT]" = "1"

# Intel Common SoC Config
    #+-------------------+---------------------------+