diff --git a/src/import/chips/p9/procedures/xml/attribute_info/chip_ec_attributes.xml b/src/import/chips/p9/procedures/xml/attribute_info/chip_ec_attributes.xml
index 48430f6c7..ff5cace87 100644
--- a/src/import/chips/p9/procedures/xml/attribute_info/chip_ec_attributes.xml
+++ b/src/import/chips/p9/procedures/xml/attribute_info/chip_ec_attributes.xml
@@ -1997,6 +1997,30 @@
+
+ ATTR_CHIP_EC_FEATURE_OPTIMAL_LARX_STCX_PERF
+ TARGET_TYPE_PROC_CHIP
+
+ Nimbus DD2+: set the optimal dial setups for larx/stcx
+
+
+
+ ENUM_ATTR_NAME_NIMBUS
+
+ 0x20
+ GREATER_THAN_OR_EQUAL
+
+
+
+ ENUM_ATTR_NAME_CUMULUS
+
+ 0x10
+ GREATER_THAN_OR_EQUAL
+
+
+
+
+
ATTR_CHIP_EC_FEATURE_HW383616
TARGET_TYPE_PROC_CHIP