https://www.qualcomm.com/developer/blog/2024/05/upstreaming-...
And AFAICT they're not taking any leadership in the technical areas where ARM is not great (bootloader/DTS selection-y stuff, which has been a varying level of nightmare the entire time I've been tinkering with non-x86 devices. One thing when you're selling an embedded product; a different one when you start wanting distros to support your platform).
I don't know that Qualcomm lifted a single finger to help the non-qualcomm employees who have been doing ALL of the work to make ANY Linux happy on their devices. Trust me, I was there with half a dozen other people trying to figure out what kernel module was so buggy that it would cause reboot when loaded in initrm, but without it would block boot. And that was just until I gave up and said to hell with it.