I've successfully run OpenWRT from trunk on this router (TL-MR3220v2).
I have a problem with USB on this router. I have a custom board with FT232RL on it. It worked great on TL-MR3220v1. Now it also works, but USB host on router is crashing.
When I run my program on it, You can see ongoing communication on LED's (USB led on router is flashing, RX led on my device is also flashing). After a while (sometimes 10s, but not more than 10 minutes) communication stops. USB LED on router is constantly on, RX LED is off. I's a hardware fallout for sure. When I connect it through USB Hub it works a lot better. But its also not ideal. When i start some 230V device close to cable (fluorescent lamp 20W) its also crashes.
I found that USB socket shield is connected through 1nF capacitor. It's different than in devices I've had before. As far as i know this filter is for high freq EMI. I've try to connect it directly to GND, but it didn't helped.
found my answer here https://forum.openwrt.org/viewtopic.php … 68#p190168
(Last edited by hot-dog on 28 Jan 2013, 01:28)