On Tue, Aug 30, 2022 at 6:51 AM <Lewis.Hanly@xxxxxxxxxxxxx> wrote: > We had looked at the bpgpio_init, our controller is not fully memory > mapped to support the bgpio_init() and get all routines for free. > While we have in/out and intr (interrupt state) 32-bit registers, we > would not get as much free as other generic memory mapped controllers. You're not really saying what the problem is? Is it that some registers are not one-bit-indexed from 0 per GPIO? Yours, Linus Walleij