On Wed, Jun 10, 2020 at 09:28:36PM +0000, Mario.Limonciello@xxxxxxxx wrote: > > > > To give you some references, if I'm not wrong, this prefix is used in all > > or > > almost all Intel Chromebook devices (auron, cyan, eve, fizz, hatch, > > octopus, > > poppy, strago ...) The ACPI source for this device can be found here [1], > > and, > > if not all, almost all Intel based Chromebooks are shipped with the > > firmware > > that supports this. > > You can potentially carry a small patch in your downstream kernel for the > legacy stuff until it reaches EOL. At least for the new stuff you could > enact a process that properly reserves unique numbers and changes the driver > when the interface provided by the ACPI device has changed. If we use this prefix for hatch EOL is ~7 years from now. Thanks. -- Dmitry