diff --git a/recipes-phosphor/configuration/entity-manager/ibm-power9-cpu/blocklist.json b/recipes-phosphor/configuration/entity-manager/ibm-power9-cpu/blocklist.json
new file mode 100644
index 0000000..2dbf22d
--- /dev/null
+++ b/recipes-phosphor/configuration/entity-manager/ibm-power9-cpu/blocklist.json
@@ -0,0 +1,3 @@
+{
+    "buses": [100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214]
+}