arm64: dts: imx94: Correct PCIe outbound address space configuration

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Fix the PCIe outbound memory ranges for both pcie0 controllers on i.MX94.

The memory window size was incorrectly set to 256MB during initial
bring-up, but the hardware supports up to 4GB of outbound address space
per controller.

Additionally, the ECAM region cannot be mapped as I/O space. Use a
memory-mapped region for I/O space instead, and relocate the 1MB I/O
region to immediately follow the memory region at offset 0xf0000000
within each window.

Update the outbound address space layout per controller as follows:

  - 3.5GB  64-bit prefetchable memory
  - 256MB  32-bit non-prefetchable memory
  - 1MB    I/O

Fixes: 8cd439f177 ("arm64: dts: imx94: Add pcie0 and pcie0-ep supports")
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>

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This commit is contained in:

Richard Zhu 2026-06-04 10:38:20 +08:00 • committed by Frank Li

parent 368eb597c6

commit ffccbd6804

1 changed files with 3 additions and 2 deletions

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arch/arm64/boot/dts/freescale/imx94.dtsi

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