On Tue, Sep 6, 2022 at 5:08 PM Asmaa Mnebhi <asmaa@xxxxxxxxxx> wrote: > -----Original Message----- > From: Linus Walleij <linus.walleij@xxxxxxxxxx> > Sent: Friday, September 2, 2022 5:55 PM > On Fri, Sep 2, 2022 at 5:55 PM Asmaa Mnebhi <asmaa@xxxxxxxxxx> wrote: ... > > I would like that to be controlled by the ACPI table only. > > I don't know if it is possible to restrict GPIOs to just be used from ACPI. On Intel platforms that's done with HW assistance, i.e. firmware configures special registers inside pin control / GPIO address space that reflect ownership. The driver rejects any attempts to request such GPIOs. As a workaround one may simply disable all user space interfaces (as you already discussed in this thread). -- With Best Regards, Andy Shevchenko
