diff --git a/mainboard/emulation/qemu-x86/dts b/mainboard/emulation/qemu-x86/dts
index 74b8c7701f..056de21c21 100644
--- a/mainboard/emulation/qemu-x86/dts
+++ b/mainboard/emulation/qemu-x86/dts
@@ -30,8 +30,11 @@
 		bus@0 {
 			pci@0,0 {
 			};
-			pci@1,0 {
+			pci@1,1 {
 				/config/("southbridge/intel/i82371eb/ide");
+				subsystem_vendor = "0x15ad";
+				subsystem_device = "0x1976";
+				on_mainboard;
 			};
 		};
 	};
diff --git a/util/dtc/flattree.c b/util/dtc/flattree.c
index a7a14101fd..af45b487a7 100644
--- a/util/dtc/flattree.c
+++ b/util/dtc/flattree.c
@@ -622,6 +622,12 @@ static void coreboot_emit_special(FILE *e, struct node *tree)
 		if (streq(prop->name, "on_mainboard")){
 			fprintf(f, "\t.on_mainboard = 1,\n");
 		}
+		if (streq(prop->name, "subsystem_vendor")){
+			fprintf(f, "\t.subsystem_vendor = %s,\n", prop->val.val);
+		}
+		if (streq(prop->name, "subsystem_device")){
+			fprintf(f, "\t.subsystem_device = %s,\n", prop->val.val);
+		}
 		if (streq(prop->name, "enabled")){
 			enabled = 1;
 		}