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

[Frank Chu (Code Review)]

Frank Chu has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/73491 )

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

- Enable Acoustic noise mitigation
- Set slow slew rate VCCIA and VCCGT to 8
- Set FastPkgCRampDisable VCCIA and VCCGT to 1

BUG=b:271788117
TEST=build FW and system power on.

Signed-off-by: Frank Chu 
Change-Id: I411c91e1e70285afbf31750a56a039d60bbe093f
---
M src/mainboard/google/brya/variants/marasov/overridetree.cb
1 file changed, 23 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/91/73491/1

diff --git a/src/mainboard/google/brya/variants/marasov/overridetree.cb b/src/mainboard/google/brya/variants/marasov/overridetree.cb
index 4cc8790..c7db17b 100644
--- a/src/mainboard/google/brya/variants/marasov/overridetree.cb
+++ b/src/mainboard/google/brya/variants/marasov/overridetree.cb
@@ -24,6 +24,12 @@
 end

chip soc/intel/alderlake
+	# Acoustic settings
+	register "acoustic_noise_mitigation" = "1"
+	register "slow_slew_rate[VR_DOMAIN_IA]" = "SLEW_FAST_8"
+	register "slow_slew_rate[VR_DOMAIN_GT]" = "SLEW_FAST_8"
+	register "fast_pkg_c_ramp_disable[VR_DOMAIN_IA]" = "1"
+	register "fast_pkg_c_ramp_disable[VR_DOMAIN_GT]" = "1"

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