diff --git a/hw/pci-host/pnv_phb4_pec.c b/hw/pci-host/pnv_phb4_pec.c
index dfed2af0f7df..9b081d543057 100644
--- a/hw/pci-host/pnv_phb4_pec.c
+++ b/hw/pci-host/pnv_phb4_pec.c
@@ -556,6 +556,10 @@ static void pnv_pec_stk_realize(DeviceState *dev, Error **errp)
 {
     PnvPhb4PecStack *stack = PNV_PHB4_PEC_STACK(dev);
     PnvPhb4PecState *pec = stack->pec;
+    PnvPhb4PecClass *pecc = PNV_PHB4_PEC_GET_CLASS(pec);
+    PnvChip *chip = pec->chip;
+    uint32_t pec_nest_base;
+    uint32_t pec_pci_base;
     char name[64];
 
     assert(pec);
@@ -579,10 +583,34 @@ static void pnv_pec_stk_realize(DeviceState *dev, Error **errp)
     pnv_xscom_region_init(&stack->phb_regs_mr, OBJECT(&stack->phb),
                           &pnv_phb4_xscom_ops, &stack->phb, name, 0x40);
 
-    /*
-     * Let the machine/chip realize the PHB object to customize more
-     * easily some fields
-     */
+    {
+        Object *obj = OBJECT(&stack->phb);
+
+        object_property_set_int(obj, "chip-id", pec->chip_id, &error_fatal);
+        object_property_set_int(obj, "version", pecc->version, &error_fatal);
+        object_property_set_int(obj, "device-id", pecc->device_id,
+                                &error_fatal);
+        object_property_set_link(obj, "stack", OBJECT(stack),
+                                 &error_abort);
+        if (!sysbus_realize(SYS_BUS_DEVICE(obj), errp)) {
+            return;
+        }
+    }
+
+    pec_nest_base = pecc->xscom_nest_base(pec);
+    pec_pci_base = pecc->xscom_pci_base(pec);
+
+    /* Populate the XSCOM address space. */
+    pnv_xscom_add_subregion(chip,
+                            pec_nest_base + 0x40 * (stack->stack_no + 1),
+                            &stack->nest_regs_mr);
+    pnv_xscom_add_subregion(chip,
+                            pec_pci_base + 0x40 * (stack->stack_no + 1),
+                            &stack->pci_regs_mr);
+    pnv_xscom_add_subregion(chip,
+                            pec_pci_base + PNV9_XSCOM_PEC_PCI_STK0 +
+                            0x40 * stack->stack_no,
+                            &stack->phb_regs_mr);
 }
 
 static Property pnv_pec_stk_properties[] = {
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 3a550eed0f36..7e13b15241fd 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -1370,7 +1370,7 @@ static void pnv_chip_quad_realize(Pnv9Chip *chip9, Error **errp)
 static void pnv_chip_power9_phb_realize(PnvChip *chip, Error **errp)
 {
     Pnv9Chip *chip9 = PNV9_CHIP(chip);
-    int i, j;
+    int i;
 
     for (i = 0; i < chip->num_pecs; i++) {
         PnvPhb4PecState *pec = &chip9->pecs[i];
@@ -1392,35 +1392,6 @@ static void pnv_chip_power9_phb_realize(PnvChip *chip, Error **errp)
 
         pnv_xscom_add_subregion(chip, pec_nest_base, &pec->nest_regs_mr);
         pnv_xscom_add_subregion(chip, pec_pci_base, &pec->pci_regs_mr);
-
-        for (j = 0; j < pec->num_stacks; j++) {
-            PnvPhb4PecStack *stack = &pec->stacks[j];
-            Object *obj = OBJECT(&stack->phb);
-
-            object_property_set_int(obj, "chip-id", chip->chip_id,
-                                    &error_fatal);
-            object_property_set_int(obj, "version", pecc->version,
-                                    &error_fatal);
-            object_property_set_int(obj, "device-id", pecc->device_id,
-                                    &error_fatal);
-            object_property_set_link(obj, "stack", OBJECT(stack),
-                                     &error_abort);
-            if (!sysbus_realize(SYS_BUS_DEVICE(obj), errp)) {
-                return;
-            }
-
-            /* Populate the XSCOM address space. */
-            pnv_xscom_add_subregion(chip,
-                                   pec_nest_base + 0x40 * (stack->stack_no + 1),
-                                   &stack->nest_regs_mr);
-            pnv_xscom_add_subregion(chip,
-                                    pec_pci_base + 0x40 * (stack->stack_no + 1),
-                                    &stack->pci_regs_mr);
-            pnv_xscom_add_subregion(chip,
-                                    pec_pci_base + PNV9_XSCOM_PEC_PCI_STK0 +
-                                    0x40 * stack->stack_no,
-                                    &stack->phb_regs_mr);
-        }
     }
 }
 
