We have a kernel patch which adds pinctrl/GPIO support for Intel Denverton SoC (https://patchwork.kernel.org/patch/9879473/) to make possible to access the GPIO from user space (via sysfs, i.e. /sys/kernel/debug/pinctrl/), however this patch is expects a "INTC3000" GPIO controller definition in the ACPI tables.
I want to add/implement the INTC3000 in the ASL code, but since I don´t want to reinvent the wheel I´m asking if such ASL code is already available somewhere (at least in the Intel Pine Lake CRB there´s no such reference to INTC3000 in the ACPI tables).

I have a set of patches that still need some work (https://review.coreboot.org/c/coreboot/+/24928) that enable some shared code for GPIO; following I also have more patches to use the ACPI code from common block too (not published yet). I didn’t check but probably apollolake or cannonlake has the ACPI code for GPIO (using common block).

If you are interested I can probably work on adding the ACPI implementation to Gerrit sooner.

Best Regards,

Julien

Thanks,
Sumo
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