As Stefan pointed out last week, the necessity for boot-time ACPI discovery increases. In principle, you could get all the required information from a running Linux system but we don’t have a guide for this. Even with all the information at hand, however, the issue remains that the current driver does not support your platform. Yet, it is probably merely a matter of adding a few compilation units and testing. If you are keen on getting your hands dirty with this, please feel free.