Hi, On Sun, Sep 26, 2021, at 14:48, Linus Walleij wrote: > I think npins should be known from the compatible (we know that > this version of the SoC has so and so many pins) and the base > should always be 0? It's not like we have several pin controllers > of this type in the SoC is it? I've just checked: Looks like there are four different pin controllers of this type with a different number of pins each in Apple's device tree for the M1. Best, Sven