[PATCH v7 0/3] PCI: rockchip: 5.0 GT/s speed discouraged by Rockchip

[Geraldo Nascimento]

Hi Mani,

On Tue, Oct 13, 2026 at 10:48 AM Manivannan Sadhasivam <mani at kernel.org> wrote:
>
>
> On Tue, 16 Jun 2026 12:24:48 -0300, Geraldo Nascimento wrote:
> > PCI: rockchip: 5.0 GT/s speed discouraged by Rockchip
> >
> > Dragan Simic already had warned me of potential issues with 5.0 GT/s
> > speed operation in Rockchip PCIe. However, in recent interactions
> > with Shawn Lin from Rockchip it came to my attention there's grave
> > danger in the unknown errata regarding 5.0 GT/s operational speed
> > of their PCIe core, including data loss.
> >
> > [...]
>
> Applied, thanks!

Thank you Mani, that was an important drop.

It's a little strange I guess to have patches that were Reported-by
and then Reviewed-by the same people. But in this case Dragan
and Shawn deserve all the credit, I'm just the person who dropped
some code.

Regards,
Geraldo Nascimento

>
> [1/3] PCI: rockchip-ep: do not attempt 5.0 GT/s retraining
>       commit: 39f89dde0a76b229df7eb356aaf6f444b4f8a636
> [2/3] PCI: rockchip-host: do not attempt 5.0 GT/s retraining
>       commit: 5988a53f5bf758b2d41cb6e0832c19b9692c76d2
> [3/3] PCI: rockchip: drive at 2.5 GT/s, error other speeds
>       commit: 62843031ca1f11d1b8e90e7f558c1b3c4cd77184
>
> Best regards,
> --
> மணிவண்ணன் சதாசிவம்
>
>