PCI: mobiveil: Fix the Class Code field

[ Upstream commit 0122af0a08243f344a438f924e5c2486486555b3 ]

Fix up the Class Code field in PCI configuration space and set it to
PCI_CLASS_BRIDGE_PCI.

Move the Class Code fixup to function mobiveil_host_init() where
it belongs.

Fixes: 9af6bcb11e12 ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver")
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com>
Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/pci/controller/pcie-mobiveil.c b/drivers/pci/controller/pcie-mobiveil.c
index d9f2d0f..3e81e68 100644 (file)
--- a/drivers/pci/controller/pcie-mobiveil.c
+++ b/drivers/pci/controller/pcie-mobiveil.c
@@ -565,6 +565,12 @@ static int mobiveil_host_init(struct mobiveil_pcie *pcie)
                }
        }
 
+       /* fixup for PCIe class register */
+       value = csr_readl(pcie, PAB_INTP_AXI_PIO_CLASS);
+       value &= 0xff;
+       value |= (PCI_CLASS_BRIDGE_PCI << 16);
+       csr_writel(pcie, value, PAB_INTP_AXI_PIO_CLASS);
+
        /* setup MSI hardware registers */
        mobiveil_pcie_enable_msi(pcie);
 
@@ -805,9 +811,6 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
                goto error;
        }
 
-       /* fixup for PCIe class register */
-       csr_writel(pcie, 0x060402ab, PAB_INTP_AXI_PIO_CLASS);
-
        /* initialize the IRQ domains */
        ret = mobiveil_pcie_init_irq_domain(pcie);
        if (ret) {