On Fri, Feb 22, 2019 at 9:57 AM Marc Zyngier <marc.zyngier@xxxxxxx> wrote: > To be honest, I'd like to make progress on that too, if only to put > something in core code so that individual drivers don't have to play > that kind of game. I am trying to pull hierarchical IRQ into the gpiolib core by refactoring based on these and some other patches (like the IXP4xx GPIO driver). I am working under the assumptions of what compatible strings indicating the hierarchy topology and hard coded ranges of offsets from parent to child in the driver only associated with the compatible string, so no IRQ range mapping in the device tree. AFAICT that is how hierarchical irqdomain is engineered as of today. Yours, Linus Walleij
