alt Hacker NewsMaybe I'm wrong, but I feel like creating device tree should be relatively straightforward if driver support is there. So while having official device tree is awesome, it's not something that's very hard to do. Now writing drivers without datasheets, using reverse-engineering is something that's hard to do.
I've been waiting for someone to write a DTS for a Snapdragon(R) X - X126100 - Qualcomm(R) Oryon(TM) CPU based laptop I bought over a year ago. Some people are trying but it can't be that easy ... Starting to look into doing it myself and AFAICT it requires reading the ACPI tables (written for Windows drivers), and manually converting it to devicetree, test, tweak, repeat.