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-rw-r--r--src/mainboard/google/dedede/variants/taranza/overridetree.cb3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/mainboard/google/dedede/variants/taranza/overridetree.cb b/src/mainboard/google/dedede/variants/taranza/overridetree.cb
index e3df1f2d17..fa8d409f98 100644
--- a/src/mainboard/google/dedede/variants/taranza/overridetree.cb
+++ b/src/mainboard/google/dedede/variants/taranza/overridetree.cb
@@ -53,6 +53,9 @@ chip soc/intel/jasperlake
register "DdiPortAHpd" = "1"
register "DdiPortADdc" = "1"
+ # Does not support external vnn power rail
+ register "disable_external_bypass_vr" = "1"
+
# USB Port Configuration
register "usb2_ports[0]" = "{
.enable = 1,