drivers: pci: Set PCIe PCI standard configuration ID.

Class - PCI-to-PCI bridge.
Revision - 2.

Signed-off-by: Kevin.xie <kevin.xie@starfivetech.com>

diff --git a/drivers/pci/controller/pcie-plda.c b/drivers/pci/controller/pcie-plda.c
index cde8f7b..1a4d943 100644 (file)
--- a/drivers/pci/controller/pcie-plda.c
+++ b/drivers/pci/controller/pcie-plda.c
@@ -42,6 +42,7 @@
 #define ISTATUS_MSI                    0x194
 #define CFG_SPACE                      0x1000
 #define GEN_SETTINGS                   0x80
+#define PCIE_PCI_IDS                   0x9C
 #define PCIE_WINROM                    0xFC
 #define PMSG_SUPPORT_RX                        0x3F0
 
@@ -53,6 +54,10 @@
 #define PLDA_LINK_UP                   1
 #define PLDA_LINK_DOWN                 0
 
+#define IDS_REVISION_ID                        0x02
+#define IDS_PCI_TO_PCI_BRIDGE          0x060400
+#define IDS_CLASS_CODE_SHIFT           8
+
 #define PLDA_DATA_LINK_ACTIVE          BIT(5)
 #define PREF_MEM_WIN_64_SUPPORT                BIT(3)
 #define PMSG_LTR_SUPPORT               BIT(2)
@@ -808,6 +813,10 @@ static void plda_pcie_hw_init(struct plda_pcie *pcie)
        value |= PLDA_RP_ENABLE;
        writel(value, pcie->reg_base + GEN_SETTINGS);
 
+       /* PCIe PCI Standard Configuration Identification Settings. */
+       value = (IDS_PCI_TO_PCI_BRIDGE << IDS_CLASS_CODE_SHIFT) | IDS_REVISION_ID;
+       writel(value, pcie->reg_base + PCIE_PCI_IDS);
+
        /* The LTR message forwarding of PCIe Message Reception was set by core
         * as default, but the forward id & addr are also need to be reset.
         * If we do not disable LTR message forwarding here, or set a legal