Kernel hackers: upstream kernel for FP2 OpenOS?

[RSpliet]

Not to mention Sony is doing cool stuff. From 2016:

Today, we have the basic support for running the mainline Linux kernel on Xperia devices based on two Qualcomm® platforms: APQ8064 (for example Xperia Z) and MSM8974 (for example Xperia Z1, Xperia Z2 and Xperia Z3). These have support for UART, eMMC, uSD, USB gadget, hardware buttons, charging (MSM8974 only) and a lot of plumbing for future work.

Mind you, the MSM8974 is the same SoC as you find in the Fairphone (hence I proposed taking their device tree and modifying it for the Fairphone initially).