help with USB bluetooth driver

[Jesse Gibbons]

I recently purchased the device described here 
<https://h-node.org/bluetooth/view/en/2005/Broadcom-BCM20702A0-Bluetooth/1/1/undef/undef/undef/undef/bluetooth-works/asus>

H-node says it should work without nonfree drivers. But when I plug it 
in, the kernel says non-free firmware was disabled. Do I need to setup 
anything to get the kernel to load the driver?

H-node says that it was tested on PureOS. I know that PureOS does not 
disable firmware, they simply don't install them on the distro by 
default and don't provide any way to install them. So this could be 
something for Purism to investigate.

I've searched the linux-libre source, including the deblob script, but I 
can't find where it disables that particular device, so it's safe to 
assume that it is not known to require blobs. Furthermore, the device 
itself is documented in the deblobbed source, so it's reasonable to 
expect the device to work.

I confirmed that lsusb -v is almost identical to what's on h-node, where 
the only difference is the serial number. I can't find the hwinfo 
package, so I can't compare the other data. What package contains hwinfo?

If I can get it to load on another gnu/linux-libre operating system, 
it's a problem with guix. Else it is a linux-libre bug and I should 
report it upstream. What linux-libre distro should I check?