After installing CRUST, what does a distro need to do to get wake on modem working?

[Subsentient]

I've got CRUST installed on my BraveHeart with a modern Megous kernel, but I can't get the device to wake on calls/texts.
Apparently it's supposed to work on BraveHeart now.

What do I have to do in order to get my phone to wake on ring or text? Set some parameters in /sys/power that I don't know about?
I'm just using a vanilla Fedora 32 install with XFCE and the Librem5 "Calls" app for the phone functionality.

[Subsentient]

So, I figured it out. You need CRUST firmware of course, but also, the following AT command executed exactly once to save the relevant setting:

Code:

AT+QCFG="risignaltype","physical"

In my attempts, I compiled a fresh CRUST u-boot based off the latest git, that also uses 492Mhz DRAM speed, I'm providing it here.
Thermals improve a bit with this u-boot using slightly underclocked RAM, and it's likely to fix many crashes related to faster DRAM speeds. The performance hit is completely unnoticeable to me.

[Alefnode]

Can you explain how do you install crust modifications to megous kernel?

[Subsentient]

Can you explain how do you install crust modifications to megous kernel?

Here's a working kernel config that has the necessary sleep options enabled. It also enables a lot of filesystems, etc. Should work on any distro. You need opportunistic sleep and wakelocks I think. I'm working on a simpler daemon for desktop distros to manage crust instead of repowerd.

[Alefnode]

Finally i compiled from source all kernel, but thank you so much for the info