MT7621A usb device count limit

Installing and Using OpenWrt
1

Hello.
I found that I cannot connect more than 4 devices to my router.
then the kernel speaks

[    6.278743] usb 1-1.5: new high-speed USB device number 8 using xhci-mtk
[    6.420830] usb 1-1.5: Not enough host controller resources for new device state.
[    6.435818] usb 1-1.5: can't set config #1, error -12

Is this a hardware or software limitation? Can it be changed?

2

Hi, why you do it "more than 4", only 1 is enough for me.

3

Which router and which OpenWrt release are we talking about?

4

I tested it on these two: TP-Link Archer C6U & Hilink HLK-7621 evb.
I used a last snapshot form git

5

Hi @aquaforum . Have you found any solution?
I get the same error for may MT7621-based device.
I heard that it's a sort of hardware limit for USB endpoints in MT7621.