HW406130: Reduce dma read requests from 16->8 in NX inits

Change-Id: If933b64240a4bd75811583f72f64663f38558139
Original-Change-Id: I194a441cda9076cddc5888dda20478677fa7a890
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/38234
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Kevin F. Reick <reick@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: Matt K. Light <mklight@us.ibm.com>
Reviewed-by: Sachin Gupta <sgupta2m@in.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>

src/import/chips/p9/procedures/xml/attribute_info/chip_ec_attributes.xml

@@ -2633,6 +2633,24 @@
     </chipEcFeature>
   </attribute>
 
+  <attribute>
+    <id>ATTR_CHIP_EC_FEATURE_HW406130</id>
+    <targetType>TARGET_TYPE_PROC_CHIP</targetType>
+    <description>
+        Nimbus DD1: Reduce number of active DMA read requests down from 16->8
+        to work around erat access count bug
+    </description>
+    <chipEcFeature>
+      <chip>
+        <name>ENUM_ATTR_NAME_NIMBUS</name>
+        <ec>
+          <value>0x20</value>
+          <test>LESS_THAN</test>
+        </ec>
+      </chip>
+    </chipEcFeature>
+  </attribute>
+
   <attribute>
     <id>ATTR_CHIP_EC_FEATURE_HW389045</id>
     <targetType>TARGET_TYPE_PROC_CHIP</targetType>