RE: [PATCH v9 4/5] PCI: rcar-gen4: Add support for r8a779g0

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Hello Bjorn,

> From: Bjorn Helgaas, Sent: Wednesday, July 3, 2024 2:14 AM
> 
> On Tue, Jun 11, 2024 at 09:50:56PM +0900, Yoshihiro Shimoda wrote:
> > Add support for r8a779g0 (R-Car V4H).
> >
> > This driver previously supported r8a779f0 (R-Car S4-8). PCIe features
> > of both r8a779f0 and r8a779g0 are almost all the same. For example:
> >  - PCI Express Base Specification Revision 4.0
> 
> This item is too general to be really useful.  I don't think it means
> the device supports every feature described in the r4.0 spec.  I
> suspect it means it supports the 16.0 GT/s transfer rate that was
> added in r4.0?  *That* would be useful information here.  Perhaps also
> the number of lanes it supports.

You're correct. The device doesn't support every feature described in the r4.0 spec.
The device supports the 16.0 GT/s transfer rate. Also, it supports up to 4 lanes.

Best regards,
Yoshihiro Shimoda






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