[coreboot-gerrit] [XS] Change in coreboot[main]: mb/google/rex: Set EPP to 45%

[Bora Guvendik (Code Review)]

Bora Guvendik has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/79204?usp=email )

Change subject: mb/google/rex: Set EPP to 45%
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mb/google/rex: Set EPP to 45%

This updates energy performance preference value to 45%.

BUG=none
TEST=Build and boot on google/rex

Signed-off-by: Bora Guvendik 
Change-Id: Ia420e8b6bed252a8a1f59d36a4a71c2b8ec9524e
---
M src/mainboard/google/rex/variants/baseboard/rex/devicetree.cb
1 file changed, 5 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/04/79204/1

diff --git a/src/mainboard/google/rex/variants/baseboard/rex/devicetree.cb b/src/mainboard/google/rex/variants/baseboard/rex/devicetree.cb
index 162bb64..e0846d8 100644
--- a/src/mainboard/google/rex/variants/baseboard/rex/devicetree.cb
+++ b/src/mainboard/google/rex/variants/baseboard/rex/devicetree.cb
@@ -62,6 +62,11 @@
    register "sagv_freq_mhz[3]" = "6400"
    register "sagv_gear[3]" = "4"

+	# Set EPP to 45%
+	# 45 * 256/100 = 115 = 0x73
+	register "enable_energy_perf_pref" = "true"
+	register "energy_perf_pref_value" = "0x73"
+
    # Set on-board graphics as primary display
    register "skip_ext_gfx_scan" = "1"