5Ghz WiFi blocked by vc4.ko on kernel 5.10.12 on RPi4B 8GB

[Ryutaroh Matsumoto]

Hi Dave, thank you for your reply!
I send a quick reply to part of your inquiries.

> Is this issue also seen in Raspberry Pi OS?

I have used Raspberry Pi OS 5.4 series, both 32-bit and 64-bit.
I have seen no problem with WiFi or audio, i.e., they worked perfectly,
as far as I see.
If you could give a pointer to installation of Raspberry Pi OS 5.10,
I will see if the reported problems appear there.

Best regards, Ryutaroh