temp/libcamera: fork for temporary downstream patches
which are probably too experimental to ask Alpine to carry them, while being very helpful for devices that pmOS targets. The explicit goal is to help Libcamera development and drop the fork again.
For the dma heaps permissions see the ongoing debate in https://lore.kernel.org/all/bb372250-e8b8-4458-bc99-dd8365b06991@redhat.com/ It's possible that Libcamera will switch to another solution in a future release or that memory accounting issues around dma heaps will need to get fixed in the kernel before the permissions can be set by default by distros.
Regarding libcamera: simple:
patches:
- 0001-0003 can likely be dropped once the Libcamera SoftISP gains support for raw (bayer) streams passthrough (on top of converting to RGB or YUV formats).
- 0004 will likely be needed until Megi downstream patches for the Pinephone get improved/upstreamed and Libcamera adopted accordingly.
With these patches libcamera and pipewire based applications should work on the Librem5, Pinephone and - hopefully soon - devices like the OP6.
Related: #2787 (closed)