diff --git a/generators/chipyard/src/main/scala/config/RocketConfigs.scala b/generators/chipyard/src/main/scala/config/RocketConfigs.scala
index b3772af9..6cb94317 100644
--- a/generators/chipyard/src/main/scala/config/RocketConfigs.scala
+++ b/generators/chipyard/src/main/scala/config/RocketConfigs.scala
@@ -13,6 +13,10 @@ class RocketConfig extends Config(
 
 class RadianceConfig extends Config(
   new freechips.rocketchip.subsystem.WithRadianceCores() ++
+  new freechips.rocketchip.subsystem.WithIncoherentBusTopology ++ // use incoherent bus topology
+  new freechips.rocketchip.subsystem.WithNoMemPort ++
+  new testchipip.WithSbusScratchpad(banks=2) ++
+  // new testchipip.WithMbusScratchpad(banks=2) ++
   new chipyard.config.AbstractConfig)
 
 class TinyRocketConfig extends Config(
diff --git a/generators/rocket-chip b/generators/rocket-chip
index 7e15db0f..c0899777 160000
--- a/generators/rocket-chip
+++ b/generators/rocket-chip
@@ -1 +1 @@
-Subproject commit 7e15db0f0019d5cf7c381b39a8fcbcffbd6e1d3e
+Subproject commit c0899777d2d6433d1fd140fa9455e2e52f6576c0