I tried "dtoverlay=dwc2,dr_mode=peripheral" and "dtoverlay=dwc2" with
ubuntu-5.3 kernel, I could see "[18977.499410] usb 1-1.1: device
descriptor read/64, error -110" sometimes too (not always happen), if I
run "rmmod g_ether/g_cdc; modprobe g_ether/g_cdc" many times, it could
work without those errors sometimes.So it looks like this issue has
nothing to do with "dr_mode=pheripheral", maybe it has sth to do the
power supplied to the board.

I also tested the Raspbian, the kernel is "Linux raspberrypi
4.19.57-v7l+ #1244 SMP Thu Jul 4 18:48:07 BST 2019 armv7l GNU/Linux",
the result is same as the ubuntu-5.3 kernel.

And I used a single usb typec cable to connect the board and a usb hub,
the usb hub connects to a laptop.

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https://bugs.launchpad.net/bugs/1861070

Title:
  Raspberry Pi 4B: USB OTG is not working

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