Disabling the MHI M2 state appears to completely resolve issues where
enabling the wifi firmware would cause the the whole system to freeze
quite frequently. The reason for why this fix works so well is still
unknown and under investigation. See some discussion here:
http://lists.infradead.org/pipermail/ath11k/2020-December/000876.html
Also renames the firmware package to clarify that it is for the wifi
driver. This is to avoid confusion with the bluetooth firmware which
will be added in an upcoming patch.
Here's a link to kvalo's branch with the kernel patches:
https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/log/?h=ath11k-qca6390-bringup
> In this tag there's now a brand new implementation for suspend, which
> relies that the platform provides power to QCA6390 during suspend. Not
> all platforms do, but most of them should do that. ath11k also prints a
> warning whenever it notices that the firmware has crashed, but I'm not
> sure yet if it (the MHI subsystem to be exact) can detect every case.
>
> The MSI patch is mostly the same, it had just some refactoring since the
> last version. Unfortunately there's no solution still for the weird
> crashes some people are seeing.
The patches are based on version 5.10-rc4 of linux, so you'll want to
use `linuxPackages_testing`.
