diff --git a/src/mainboard/google/kahlee/variants/aleena/devicetree.cb b/src/mainboard/google/kahlee/variants/aleena/devicetree.cb
index e33ed2c1b0..61dee6f77e 100644
--- a/src/mainboard/google/kahlee/variants/aleena/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/aleena/devicetree.cb
@@ -55,6 +55,7 @@ chip soc/amd/stoneyridge
 	end
 	device domain 0 on
 		device pci 0.0 on  end # Root Complex
+		device pci 0.2 on  end # IOMMU
 		device pci 1.0 on  end # Internal Graphics P2P bridge 0x98e4
 		device pci 1.1 on  end # Internal Multimedia
 		device pci 2.0 on  end # PCIe Host Bridge
diff --git a/src/mainboard/google/kahlee/variants/careena/devicetree.cb b/src/mainboard/google/kahlee/variants/careena/devicetree.cb
index d6331345f0..d41e76a6dc 100644
--- a/src/mainboard/google/kahlee/variants/careena/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/careena/devicetree.cb
@@ -58,6 +58,7 @@ chip soc/amd/stoneyridge
 	end
 	device domain 0 on
 		device pci 0.0 on  end # Root Complex
+		device pci 0.2 on  end # IOMMU
 		device pci 1.0 on  end # Internal Graphics P2P bridge 0x98e4
 		device pci 1.1 on  end # Internal Multimedia
 		device pci 2.0 on  end # PCIe Host Bridge
diff --git a/src/mainboard/google/kahlee/variants/grunt/devicetree.cb b/src/mainboard/google/kahlee/variants/grunt/devicetree.cb
index 7da06d82ee..228ead2854 100644
--- a/src/mainboard/google/kahlee/variants/grunt/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/grunt/devicetree.cb
@@ -58,6 +58,7 @@ chip soc/amd/stoneyridge
 	end
 	device domain 0 on
 		device pci 0.0 on  end # Root Complex
+		device pci 0.2 on  end # IOMMU
 		device pci 1.0 on  end # Internal Graphics P2P bridge 0x98e4
 		device pci 1.1 on  end # Internal Multimedia
 		device pci 2.0 on  end # PCIe Host Bridge
diff --git a/src/mainboard/google/kahlee/variants/liara/devicetree.cb b/src/mainboard/google/kahlee/variants/liara/devicetree.cb
index 636f0c650a..a2134922e8 100644
--- a/src/mainboard/google/kahlee/variants/liara/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/liara/devicetree.cb
@@ -55,6 +55,7 @@ chip soc/amd/stoneyridge
 	end
 	device domain 0 on
 		device pci 0.0 on  end # Root Complex
+		device pci 0.2 on  end # IOMMU
 		device pci 1.0 on  end # Internal Graphics P2P bridge 0x98e4
 		device pci 1.1 on  end # Internal Multimedia
 		device pci 2.0 on  end # PCIe Host Bridge