Add a boolean flag 'is_hpa' to the cdns_pcie structure to indicate
that the controller is part of a Heterogeneous Processor Architecture
(HPA) system. This flag will be used by subsequent patches to handle
HPA-specific register layouts and behaviors.

Signed-off-by: Hans Zhang <18255117159@163.com>
---
 drivers/pci/controller/cadence/pci-sky1.c     | 1 +
 drivers/pci/controller/cadence/pcie-cadence.h | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/pci/controller/cadence/pci-sky1.c b/drivers/pci/controller/cadence/pci-sky1.c
index d8c216dc120d..2dd90118c351 100644
--- a/drivers/pci/controller/cadence/pci-sky1.c
+++ b/drivers/pci/controller/cadence/pci-sky1.c
@@ -174,6 +174,7 @@ static int sky1_pcie_probe(struct platform_device *pdev)
 	cdns_pcie->reg_base = pcie->reg_base;
 	cdns_pcie->msg_res = pcie->msg_res;
 	cdns_pcie->is_rc = 1;
+	cdns_pcie->is_hpa = true;
 
 	reg_off = devm_kzalloc(dev, sizeof(*reg_off), GFP_KERNEL);
 	if (!reg_off)
diff --git a/drivers/pci/controller/cadence/pcie-cadence.h b/drivers/pci/controller/cadence/pcie-cadence.h
index 443033c607d7..c8cb19f7622f 100644
--- a/drivers/pci/controller/cadence/pcie-cadence.h
+++ b/drivers/pci/controller/cadence/pcie-cadence.h
@@ -80,6 +80,7 @@ struct cdns_plat_pcie_of_data {
  * @msg_res: Region for send message to map PCI accesses
  * @dev: PCIe controller
  * @is_rc: tell whether the PCIe controller mode is Root Complex or Endpoint.
+ * @is_hpa: indicates if the architecture is HPA
  * @phy_count: number of supported PHY devices
  * @phy: list of pointers to specific PHY control blocks
  * @link: list of pointers to corresponding device link representations
@@ -93,6 +94,7 @@ struct cdns_pcie {
 	struct resource                      *msg_res;
 	struct device		             *dev;
 	bool			             is_rc;
+	bool				     is_hpa;
 	int			             phy_count;
 	struct phy		             **phy;
 	struct device_link	             **link;
-- 
2.34.1