https://bugzilla.kernel.org/show_bug.cgi?id=77471
--- Comment #8 from Alex Deucher alexdeucher@gmail.com --- You need to build the firmware into the kernel image if you build the driver into the kernel otherwise, the driver will not be able to fetch the firmware. What you may be seeing is the kernel firmware loading waiting for firmware to become available, but it never does since it's not actually in the kernel binary.