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So add a 'ranges' entry under the parent bus 'soc' to map address 0x0 to 0x40000000. Update the PCIe node's 'config' and 'ranges' properties to use the real upstream bus address. Ensure there is no functional impact on the final address translation result. Prepare for the removal of the driver=E2=80=99s cpu_addr_fixup(). Signed-off-by: Frank Li --- arch/arm64/boot/dts/toshiba/tmpv7708.dtsi | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/arch/arm64/boot/dts/toshiba/tmpv7708.dtsi b/arch/arm64/boot/dt= s/toshiba/tmpv7708.dtsi index 39806f0ae5133..2a18aa93d4723 100644 --- a/arch/arm64/boot/dts/toshiba/tmpv7708.dtsi +++ b/arch/arm64/boot/dts/toshiba/tmpv7708.dtsi @@ -147,7 +147,15 @@ soc { #size-cells =3D <2>; compatible =3D "simple-bus"; interrupt-parent =3D <&gic>; - ranges; + ranges =3D /* register 1:1 map */ + <0x0 0x24000000 0x0 0x24000000 0x0 0x10000000>, + /* + * bus fabric mask address bit 30 and 31 to 0 + * before send to PCIe controller. + * + * PCIe map address 0 to cpu's 0x40000000 + */ + <0x0 0x00000000 0x0 0x40000000 0x0 0x40000000>; =20 gic: interrupt-controller@24001000 { compatible =3D "arm,gic-400"; @@ -481,7 +489,7 @@ pwm: pwm@241c0000 { pcie: pcie@28400000 { compatible =3D "toshiba,visconti-pcie"; reg =3D <0x0 0x28400000 0x0 0x00400000>, - <0x0 0x70000000 0x0 0x10000000>, + <0x0 0x30000000 0x0 0x10000000>, <0x0 0x28050000 0x0 0x00010000>, <0x0 0x24200000 0x0 0x00002000>, <0x0 0x24162000 0x0 0x00001000>; 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The PCIe ranges property has been corrected in the DTS, and the DesignWare common code now handles address translation properly without requiring this workaround. Signed-off-by: Frank Li --- drivers/pci/controller/dwc/pcie-visconti.c | 13 ------------- 1 file changed, 13 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-visconti.c b/drivers/pci/contr= oller/dwc/pcie-visconti.c index cdeac6177143c..9c3386c965948 100644 --- a/drivers/pci/controller/dwc/pcie-visconti.c +++ b/drivers/pci/controller/dwc/pcie-visconti.c @@ -171,20 +171,7 @@ static void visconti_pcie_stop_link(struct dw_pcie *pc= i) visconti_mpu_writel(pcie, val | MPU_MP_EN_DISABLE, PCIE_MPU_REG_MP_EN); } =20 -/* - * In this SoC specification, the CPU bus outputs the offset value from - * 0x40000000 to the PCIe bus, so 0x40000000 is subtracted from the CPU - * bus address. This 0x40000000 is also based on io_base from DT. - */ -static u64 visconti_pcie_cpu_addr_fixup(struct dw_pcie *pci, u64 cpu_addr) -{ - struct dw_pcie_rp *pp =3D &pci->pp; - - return cpu_addr & ~pp->io_base; -} - static const struct dw_pcie_ops dw_pcie_ops =3D { - .cpu_addr_fixup =3D visconti_pcie_cpu_addr_fixup, .link_up =3D visconti_pcie_link_up, .start_link =3D visconti_pcie_start_link, .stop_link =3D visconti_pcie_stop_link, --=20 2.34.1