[PATCH 1/3 v2] dt-bindings: PCI: s32g: Add NXP PCIe controller

Lorenzo Pieralisi lpieralisi at kernel.org
Tue Oct 7 08:41:55 PDT 2025


On Mon, Sep 22, 2025 at 11:51:07AM +0530, Manivannan Sadhasivam wrote:

[...]

> > +                  /*
> > +                   * non-prefetchable memory, with best case size and
> > +                   * alignment
> > +                   */
> > +                  <0x82000000 0x0 0x00000000 0x58 0x00000000 0x7 0xfffe0000>;
> 
> s/0x82000000/0x02000000
> 
> And the PCI address really starts from 0x00000000? I don't think so.

Isn't the DWC ATU programmed to make sure that the PCI memory window DT
provides _is_ the PCI "bus" memory base address ?

It is a question, I don't know the DWC inner details fully.

I don't get what you mean by "I don't think so". Either the host controller
AXI<->PCI translation is programmable, then the PCI base address is what
we decide it is or it isn't.

Thanks,
Lorenzo



More information about the linux-arm-kernel mailing list