TP Archer C7 v2 DSA setup

I have a TP Archer C7 v2 and just upgraded it to:

# cat /etc/openwrt_release
DISTRIB_DESCRIPTION='OpenWrt 21.02.0 r16279-5cc0535800'

Per this page, ath79 was switched to DSA. However, that doesn't seem to have happened on my router. Here's what I can confirm:

Per this, I should have received an upgrade error ("Image version mismatch. image 1.1 device 1.0 Please wipe config
during upgrade (force required) or reinstall. Config cannot be migrated
from swconfig to DSA Image check failed"), but I did not (I opted to keep the current router config).

# ll /sys/class/net/*/dsa
ls: /sys/class/net/*/dsa: No such file or directory

I still see "Switch" under "Network" in LuCI.

ip a still shows devices such as eth0, eth1, eth1.1@eth1 and so on instead of the expected lan1, lan2, ...

I've tried doing a factory reset, but the same happens with a fresh config.

What do I need to do to switch from swconfig to DSA?

The following targets are using a switch managed with DSA in OpenWrt 21.02:
ath79 (only TP-Link TL-WR941ND)

You might have missed the fine print?

@lantis1008 Ah, "(only TP-Link TL-WR941ND)" that makes sense then, thanks! Looks like there's a draft PR for the rest.

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