[PATCH 2/2] ramips: mt7621-dts: we420223-99: mux phy0->gmac1

[Thibaut]

Hi,

> Le 15 août 2022 à 12:30, Harm Berntsen via openwrt-devel <openwrt-devel at lists.openwrt.org> a écrit :
> 
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> De: Harm Berntsen <git at harmberntsen.nl>
> Objet: [PATCH 2/2] ramips: mt7621-dts: we420223-99: mux phy0->gmac1
> Date: 15 août 2022 à 12:30:39 UTC+2
> À: openwrt-devel at lists.openwrt.org
> Cc: Harm Berntsen <git at harmberntsen.nl>
> 
> 
> This gives each port an individual link to the CPU. The advantage of
> this is that it can now route packets faster between the ports (before
> the CPU only had a single 1Gb link to the switch that has to be shared
> between both ports. Another advantage is that in Linux 5.10 you can now
> bridge a VLAN to a non-vlan port. Without this patch, you're not getting
> any data across the bridge. That is fixed in Linux 5.15 but is still
> handled by the CPU in any case. So therefore this patch is advantageous
> in all cases except for when you need the device as a simple switch
> without VLANs. For that case it's better to revert this and the switch
> hardware will forward traffic without bothering the CPU.

FYI there’s currently an ongoing PR that aims to do this on a broader scale:
https://github.com/openwrt/openwrt/pull/10238

HTH