diff --git a/drivers/cxl/core/port.c b/drivers/cxl/core/port.c
index 4982b69..50bdbd9 100644
--- a/drivers/cxl/core/port.c
+++ b/drivers/cxl/core/port.c
@@ -1369,6 +1369,13 @@ int devm_cxl_enumerate_ports(struct cxl_memdev *cxlmd)
 	struct device *iter;
 	int rc;
 
+	/*
+	 * Skip intermediate port enumeration in the RCH case, there
+	 * are no ports in between a host bridge and an endpoint.
+	 */
+	if (cxlmd->cxlds->rcd)
+		return 0;
+
 	rc = devm_add_action_or_reset(&cxlmd->dev, cxl_detach_ep, cxlmd);
 	if (rc)
 		return rc;
diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h
index e082991..35d485d 100644
--- a/drivers/cxl/cxlmem.h
+++ b/drivers/cxl/cxlmem.h
@@ -201,6 +201,7 @@ struct cxl_endpoint_dvsec_info {
  * @dev: The device associated with this CXL state
  * @regs: Parsed register blocks
  * @cxl_dvsec: Offset to the PCIe device DVSEC
+ * @rcd: operating in RCD mode (CXL 3.0 9.11.8 CXL Devices Attached to an RCH)
  * @payload_size: Size of space for payload
  *                (CXL 2.0 8.2.8.4.3 Mailbox Capabilities Register)
  * @lsa_size: Size of Label Storage Area
@@ -235,6 +236,7 @@ struct cxl_dev_state {
 	struct cxl_regs regs;
 	int cxl_dvsec;
 
+	bool rcd;
 	size_t payload_size;
 	size_t lsa_size;
 	struct mutex mbox_mutex; /* Protects device mailbox and firmware */
diff --git a/drivers/cxl/mem.c b/drivers/cxl/mem.c
index aa63ce8..39c4b54 100644
--- a/drivers/cxl/mem.c
+++ b/drivers/cxl/mem.c
@@ -45,12 +45,13 @@ static int cxl_mem_dpa_show(struct seq_file *file, void *data)
 	return 0;
 }
 
-static int devm_cxl_add_endpoint(struct cxl_memdev *cxlmd,
+static int devm_cxl_add_endpoint(struct device *host, struct cxl_memdev *cxlmd,
 				 struct cxl_dport *parent_dport)
 {
 	struct cxl_port *parent_port = parent_dport->port;
 	struct cxl_dev_state *cxlds = cxlmd->cxlds;
 	struct cxl_port *endpoint, *iter, *down;
+	resource_size_t component_reg_phys;
 	int rc;
 
 	/*
@@ -65,8 +66,18 @@ static int devm_cxl_add_endpoint(struct cxl_memdev *cxlmd,
 		ep->next = down;
 	}
 
-	endpoint = devm_cxl_add_port(&parent_port->dev, &cxlmd->dev,
-				     cxlds->component_reg_phys, parent_dport);
+	/*
+	 * The component registers for an RCD might come from the
+	 * host-bridge RCRB if they are not already mapped via the
+	 * typical register locator mechanism.
+	 */
+	if (parent_dport->rch && cxlds->component_reg_phys == CXL_RESOURCE_NONE)
+		component_reg_phys = cxl_rcrb_to_component(
+			&cxlmd->dev, parent_dport->rcrb, CXL_RCRB_UPSTREAM);
+	else
+		component_reg_phys = cxlds->component_reg_phys;
+	endpoint = devm_cxl_add_port(host, &cxlmd->dev, component_reg_phys,
+				     parent_dport);
 	if (IS_ERR(endpoint))
 		return PTR_ERR(endpoint);
 
@@ -87,6 +98,7 @@ static int cxl_mem_probe(struct device *dev)
 {
 	struct cxl_memdev *cxlmd = to_cxl_memdev(dev);
 	struct cxl_dev_state *cxlds = cxlmd->cxlds;
+	struct device *endpoint_parent;
 	struct cxl_port *parent_port;
 	struct cxl_dport *dport;
 	struct dentry *dentry;
@@ -119,17 +131,22 @@ static int cxl_mem_probe(struct device *dev)
 		return -ENXIO;
 	}
 
-	device_lock(&parent_port->dev);
-	if (!parent_port->dev.driver) {
+	if (dport->rch)
+		endpoint_parent = parent_port->uport;
+	else
+		endpoint_parent = &parent_port->dev;
+
+	device_lock(endpoint_parent);
+	if (!endpoint_parent->driver) {
 		dev_err(dev, "CXL port topology %s not enabled\n",
-			dev_name(&parent_port->dev));
+			dev_name(endpoint_parent));
 		rc = -ENXIO;
 		goto unlock;
 	}
 
-	rc = devm_cxl_add_endpoint(cxlmd, dport);
+	rc = devm_cxl_add_endpoint(endpoint_parent, cxlmd, dport);
 unlock:
-	device_unlock(&parent_port->dev);
+	device_unlock(endpoint_parent);
 	put_device(&parent_port->dev);
 	if (rc)
 		return rc;
diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c
index e15da405..73ff6c3 100644
--- a/drivers/cxl/pci.c
+++ b/drivers/cxl/pci.c
@@ -433,6 +433,15 @@ static void devm_cxl_pci_create_doe(struct cxl_dev_state *cxlds)
 	}
 }
 
+/*
+ * Assume that any RCIEP that emits the CXL memory expander class code
+ * is an RCD
+ */
+static bool is_cxl_restricted(struct pci_dev *pdev)
+{
+	return pci_pcie_type(pdev) == PCI_EXP_TYPE_RC_END;
+}
+
 static int cxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 {
 	struct cxl_register_map map;
@@ -455,6 +464,7 @@ static int cxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	if (IS_ERR(cxlds))
 		return PTR_ERR(cxlds);
 
+	cxlds->rcd = is_cxl_restricted(pdev);
 	cxlds->serial = pci_get_dsn(pdev);
 	cxlds->cxl_dvsec = pci_find_dvsec_capability(
 		pdev, PCI_DVSEC_VENDOR_ID_CXL, CXL_DVSEC_PCIE_DEVICE);