[S] Change in coreboot[master]: mb/google/brya/var/taeko: Enable Fast VMode for taeko

[Joey Peng (Code Review)]

Joey Peng has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/73373 )

Change subject: mb/google/brya/var/taeko: Enable Fast VMode for taeko
......................................................................

mb/google/brya/var/taeko: Enable Fast VMode for taeko

Fast VMode nmakes the SoC throttle when the current exceeds the I_TRIP
threshold.

BUG=b:270242461
BRANCH=firmware-brya-14505.B
TEST=Verify that the feature is enabled by reading from fsp log

Signed-off-by: Joey Peng 
Change-Id: I82c2016d9dfb39ff7b372815737d4ae62875340c
---
M src/mainboard/google/brya/variants/taeko/overridetree.cb
1 file changed, 21 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/73/73373/1

diff --git a/src/mainboard/google/brya/variants/taeko/overridetree.cb b/src/mainboard/google/brya/variants/taeko/overridetree.cb
index e13da23..00d7e69 100644
--- a/src/mainboard/google/brya/variants/taeko/overridetree.cb
+++ b/src/mainboard/google/brya/variants/taeko/overridetree.cb
@@ -44,6 +44,10 @@
    end
 end
 chip soc/intel/alderlake
+	register "domain_vr_config[VR_DOMAIN_IA]" = "{
+		.enable_fast_vmode = 1,
+	}"
+
    # As per Intel Advisory doc#723158, the change is required to prevent possible
    # display flickering issue.
    register "usb2_phy_sus_pg_disable" = "1"