On Mon, Apr 12, 2021 at 06:40:01PM +0200, Henning Schild wrote: > Tan or Andy, > > maybe you can point me to a user of that patch. I guess there might be > an out-of-tree driver or userland code on how to use the GPIOs from > there. I'm confused. User of this patch is pinctrl-broxton driver. It's in upstream. Using GPIOs from it is something as done in a few drivers already (Assuming we have no resources described in the ACPI). I.e. you need to register in board file the GPIO mapping table with help of devm_acpi_dev_add_driver_gpios() and use one of gpiod_get() family of functions to request it. In case of LEDs you simple describe GPIO device name in lookup table and that's it. The drivers/platform/x86/pcengines-apuv2.c not the best but will give you an idea how to use "leds-gpio" driver in board files. > Feel free to send directly to me in case it is not published anywhere > and should not yet be on the list, i could just use it for inspiration. > A driver will likely be GPL anyways. -- With Best Regards, Andy Shevchenko
