No, all you need is the source code to a kernel that works on the phone. This could be from LineageOS, AOSP, TWRP, CyanogenMOD (if they didn't transfer it to LineageOS yet), or any other random repository on github with "kernel" and your device's codename in the repositories name. There are lots of those actually.
Even if you can spend "only" one weekend on it, it would hep porting to your phone immensely. As we document our progress in a device specific page, someone else can pick it up from there and advance your port!
Even if you can spend "only" one weekend on it, it would hep porting to your phone immensely. As we document our progress in a device specific page, someone else can pick it up from there and advance your port!
https://github.com/postmarketOS/pmbootstrap/wiki/Devices
Get started here: https://github.com/postmarketOS/pmbootstrap/wiki/Porting-to-...