[OpenWrt-Devel] ramips/mt7621 after 5.4 switch

Chuanhong Guo gch981213 at gmail.com
Tue Apr 7 06:16:16 EDT 2020

[CC Sergio who worked on upstream PCIE driver]

On Tue, Apr 7, 2020 at 4:45 PM Andre Valentin <avalentin at marcant.net> wrote:
> Hi!
> Currently I'm having some serious problems with the new 5.4 port.
> 1) PCIe
> I'm developing on the ZyXEL LTE3301-PLUS. It has PCIe and a mt7615e connected to second bus on the first phy.
> If booting the device, kernel hangs with a RST message, telling the device is not detected. It seems the PCIe bus 1
> cannot be reseted because nothing is connected to bus 0.
> An upport of the old PCI driver reenables the function. I can provide more logs on this if needed.

Hi Sergio:
You may want to look into this.

> 2) DSA
> These are my first experiments with DSA. I've configured 2 bridges:
> lan: lan1 lan2 lan3 lan4
> dmz: lan1.20 lan2.20 lan3.20 lan4.20
> Inbound traffic on vlan 20 is comming in, outgoing traffic passes the lan1 port but does note arrive at the other end.
> Should this work with DSA on mediathek?

It's supposed to work so this may be yet another bug upstream.

> If not, I can offer that I write a patch for traditional swconfig.

swconfig is considered deprecated so there's no need to do so.
In fact, this driver under mediatek target also works for mt7621:

Chuanhong Guo

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