Re: [PATCH 1/1] dt-bindings: PCI: host-generic-pci: Increase maxItems to 8 of ranges

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On Wed, Jul 03, 2024 at 11:26:14AM -0600, Rob Herring wrote:
> On Tue, Jul 2, 2024 at 9:37 AM Frank Li <Frank.Li@xxxxxxx> wrote:
> >
> > IEEE Std 1275-1994 is Inactive-Withdrawn Standard according to
> > https://standards.ieee.org/ieee/1275/1932/.
> 
> That has nothing to do with this.
> 
> > "require at least one non-prefetchable memory and One or both of
> > prefetchable Memory and IO Space may also be provided". But it does not
> > limit maximum ranges number is 3.
> 
> 3 was just my poor assumption that a non-prefetch, prefetchable and IO
> region would be enough. Not sure why you'd want multiple fragmented
> regions though. I guess for device assignment based on the comments.

ENETC is embeded PCI device, hardware address space layout is fragment.

Frank

> 
> > Inscrease maximum to 8 because freescale ls1028 and iMX95 use more than
> > 3 ranges.
> 
> Unless there is some actual limit, I would just drop the minItems and
> maxItems here. Then it will be limited to 32 entries in
> pci-bus-common.yaml (in dtschema) which is also a 'should be enough'
> value.
> 
> Rob




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