[S] Change in coreboot[main]: mb/google/rex/var/deku: Update psys_pmax to 180W and FVM itrip setting

[Tony Huang (Code Review)]

Tony Huang has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/82176?usp=email )

Change subject: mb/google/rex/var/deku: Update psys_pmax to 180W and FVM itrip setting
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mb/google/rex/var/deku: Update psys_pmax to 180W and FVM itrip setting

Adjust setting is from power team.
Psys MAX 180W
Itrip(GT) FVM 54
Itrip(SA) FVM 27

BUG=b:320410462
BRANCH=firmware-rex-15709.B
TEST= FSP debug emerge-ovis coreboot intel-mtlfsp
      check overrides setting

Change-Id: I6d6cf7cecaac650a7b1784833b4afb8dffb3db2c
Signed-off-by: Tony Huang 
---
M src/mainboard/google/rex/variants/deku/overridetree.cb
1 file changed, 13 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/76/82176/1

diff --git a/src/mainboard/google/rex/variants/deku/overridetree.cb b/src/mainboard/google/rex/variants/deku/overridetree.cb
index 070f596..d1a9563 100644
--- a/src/mainboard/google/rex/variants/deku/overridetree.cb
+++ b/src/mainboard/google/rex/variants/deku/overridetree.cb
@@ -54,6 +54,19 @@
    	},
    }"

+	register "psys_pmax_watts" = "180"
+
+	# As per doc 640982, Intel MTL-U 28W CPU supports FVM on GT and SA
+	# The ICC Limit is represented in 1/4 A increments, i.e., a value of 400 = 100A
+	# For GT VR configuration
+	register "enable_fast_vmode[VR_DOMAIN_GT]" = "1"
+	register "cep_enable[VR_DOMAIN_IA]" = "1"
+	register "fast_vmode_i_trip[VR_DOMAIN_GT]" = "216" # 54A
+	# For SA VR configuration
+	register "enable_fast_vmode[VR_DOMAIN_SA]" = "1"
+	register "cep_enable[VR_DOMAIN_SA]" = "1"
+	register "fast_vmode_i_trip[VR_DOMAIN_SA]" = "108" # 27A
+
    device domain 0 on
    	device ref dtt on
    		chip drivers/intel/dptf