diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index c0a5703b74..b3388038c6 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -280,11 +280,13 @@ static void pnv_dt_icp(PnvChip *chip, void *fdt, uint32_t pir,
 
 static void pnv_chip_power8_dt_populate(PnvChip *chip, void *fdt)
 {
+    static const char compat[] = "ibm,power8-xscom\0ibm,xscom";
     int i;
 
     pnv_dt_xscom(chip, fdt, 0,
                  cpu_to_be64(PNV_XSCOM_BASE(chip)),
-                 cpu_to_be64(PNV_XSCOM_SIZE));
+                 cpu_to_be64(PNV_XSCOM_SIZE),
+                 compat, sizeof(compat));
 
     for (i = 0; i < chip->nr_cores; i++) {
         PnvCore *pnv_core = chip->cores[i];
@@ -302,11 +304,13 @@ static void pnv_chip_power8_dt_populate(PnvChip *chip, void *fdt)
 
 static void pnv_chip_power9_dt_populate(PnvChip *chip, void *fdt)
 {
+    static const char compat[] = "ibm,power9-xscom\0ibm,xscom";
     int i;
 
     pnv_dt_xscom(chip, fdt, 0,
                  cpu_to_be64(PNV9_XSCOM_BASE(chip)),
-                 cpu_to_be64(PNV9_XSCOM_SIZE));
+                 cpu_to_be64(PNV9_XSCOM_SIZE),
+                 compat, sizeof(compat));
 
     for (i = 0; i < chip->nr_cores; i++) {
         PnvCore *pnv_core = chip->cores[i];
@@ -323,11 +327,13 @@ static void pnv_chip_power9_dt_populate(PnvChip *chip, void *fdt)
 
 static void pnv_chip_power10_dt_populate(PnvChip *chip, void *fdt)
 {
+    static const char compat[] = "ibm,power10-xscom\0ibm,xscom";
     int i;
 
     pnv_dt_xscom(chip, fdt, 0,
                  cpu_to_be64(PNV10_XSCOM_BASE(chip)),
-                 cpu_to_be64(PNV10_XSCOM_SIZE));
+                 cpu_to_be64(PNV10_XSCOM_SIZE),
+                 compat, sizeof(compat));
 
     for (i = 0; i < chip->nr_cores; i++) {
         PnvCore *pnv_core = chip->cores[i];
diff --git a/hw/ppc/pnv_xscom.c b/hw/ppc/pnv_xscom.c
index 8189767eb0..5ae9dfbb88 100644
--- a/hw/ppc/pnv_xscom.c
+++ b/hw/ppc/pnv_xscom.c
@@ -282,12 +282,9 @@ static int xscom_dt_child(Object *child, void *opaque)
     return 0;
 }
 
-static const char compat_p8[] = "ibm,power8-xscom\0ibm,xscom";
-static const char compat_p9[] = "ibm,power9-xscom\0ibm,xscom";
-static const char compat_p10[] = "ibm,power10-xscom\0ibm,xscom";
-
 int pnv_dt_xscom(PnvChip *chip, void *fdt, int root_offset,
-                 uint64_t xscom_base, uint64_t xscom_size)
+                 uint64_t xscom_base, uint64_t xscom_size,
+                 const char *compat, int compat_size)
 {
     uint64_t reg[] = { xscom_base, xscom_size };
     int xscom_offset;
@@ -302,18 +299,7 @@ int pnv_dt_xscom(PnvChip *chip, void *fdt, int root_offset,
     _FDT((fdt_setprop_cell(fdt, xscom_offset, "#address-cells", 1)));
     _FDT((fdt_setprop_cell(fdt, xscom_offset, "#size-cells", 1)));
     _FDT((fdt_setprop(fdt, xscom_offset, "reg", reg, sizeof(reg))));
-
-    if (pnv_chip_is_power10(chip)) {
-        _FDT((fdt_setprop(fdt, xscom_offset, "compatible", compat_p10,
-                          sizeof(compat_p10))));
-    } else if (pnv_chip_is_power9(chip)) {
-        _FDT((fdt_setprop(fdt, xscom_offset, "compatible", compat_p9,
-                          sizeof(compat_p9))));
-    } else {
-        _FDT((fdt_setprop(fdt, xscom_offset, "compatible", compat_p8,
-                          sizeof(compat_p8))));
-    }
-
+    _FDT((fdt_setprop(fdt, xscom_offset, "compatible", compat, compat_size)));
     _FDT((fdt_setprop(fdt, xscom_offset, "scom-controller", NULL, 0)));
 
     args.fdt = fdt;
diff --git a/include/hw/ppc/pnv_xscom.h b/include/hw/ppc/pnv_xscom.h
index ad53f788b4..f74c81a980 100644
--- a/include/hw/ppc/pnv_xscom.h
+++ b/include/hw/ppc/pnv_xscom.h
@@ -115,7 +115,8 @@ typedef struct PnvXScomInterfaceClass {
 
 void pnv_xscom_realize(PnvChip *chip, uint64_t size, Error **errp);
 int pnv_dt_xscom(PnvChip *chip, void *fdt, int root_offset,
-                 uint64_t xscom_base, uint64_t xscom_size);
+                 uint64_t xscom_base, uint64_t xscom_size,
+                 const char *compat, int compat_size);
 
 void pnv_xscom_add_subregion(PnvChip *chip, hwaddr offset,
                              MemoryRegion *mr);