Re: [PATCH RFC NOT TESTED 2/2] PCI: artpec6: Use use_parent_dt_ranges and clean up artpec6_pcie_cpu_addr_fixup()

[Bjorn Helgaas]

On Tue, Mar 04, 2025 at 12:49:36PM -0500, Frank Li wrote:
> Remove artpec6_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.

Shouldn't we be able to detect platforms where DT doesn't describe the
translation correctly?  E.g., by running .cpu_addr_fixup() on a
res.start value and comparing the result to the parent_bus_addr()?
Then we could complain about it if they don't match.

Bjorn