Remove intel_pcie_cpu_addr_fixup() as the DT bus fabric should provide correct address translation. Set use_parent_dt_ranges to allow the DWC core driver to fetch address translation from the device tree. Signed-off-by: Frank Li <Frank.Li@xxxxxxx> --- This patches basic on https://lore.kernel.org/imx/20250128-pci_fixup_addr-v9-0-3c4bb506f665@xxxxxxx/ I have not hardware to test and there are not intel,lgm-pcie in kernel tree. Your dts should correct reflect hardware behavor, ref: https://lore.kernel.org/linux-pci/Z8huvkENIBxyPKJv@xxxxxxxx/T/#mb7ae78c3a22324b37567d24ecc1c810c1b3f55c5 According to your intel_pcie_cpu_addr_fixup() Basically, config space/io/mem space need minus SZ_256. parent bus range convert it to original value. Look for driver owner, who help test this and start move forward to remove cpu_addr_fixup() work. --- Frank Li <Frank.Li@xxxxxxx> --- drivers/pci/controller/dwc/pcie-intel-gw.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-intel-gw.c b/drivers/pci/controller/dwc/pcie-intel-gw.c index 9b53b8f6f268e..c21906eced618 100644 --- a/drivers/pci/controller/dwc/pcie-intel-gw.c +++ b/drivers/pci/controller/dwc/pcie-intel-gw.c @@ -57,7 +57,6 @@ PCIE_APP_IRN_INTA | PCIE_APP_IRN_INTB | \ PCIE_APP_IRN_INTC | PCIE_APP_IRN_INTD) -#define BUS_IATU_OFFSET SZ_256M #define RESET_INTERVAL_MS 100 struct intel_pcie { @@ -381,13 +380,7 @@ static int intel_pcie_rc_init(struct dw_pcie_rp *pp) return intel_pcie_host_setup(pcie); } -static u64 intel_pcie_cpu_addr(struct dw_pcie *pcie, u64 cpu_addr) -{ - return cpu_addr + BUS_IATU_OFFSET; -} - static const struct dw_pcie_ops intel_pcie_ops = { - .cpu_addr_fixup = intel_pcie_cpu_addr, }; static const struct dw_pcie_host_ops intel_pcie_dw_ops = { @@ -409,6 +402,7 @@ static int intel_pcie_probe(struct platform_device *pdev) platform_set_drvdata(pdev, pcie); pci = &pcie->pci; pci->dev = dev; + pci->use_parent_dt_ranges = true; pp = &pci->pp; ret = intel_pcie_get_resources(pdev); --- base-commit: 1552be4855dacca5ea39b15b1ef0b96c91dbea0d change-id: 20250305-intel-7c25bfb498b1 Best regards,
