On 1/17/20 5:38 AM, Michal Zygowski wrote:
> Hi,
> 
> Looking at harcuvar board and denverton_ns SoC sources it looks like the
> GPIO controller is not defined in ACPI. It may be causing the probe to
> fail for pinctrl in Linux. There is simply no GPIO ASL code for
> denverton_ns. For example refer to soc/intel/skylake/acpi/gpio.asl.

That's correct.  The Linux pinctrl driver expects to bind to an
"INTC3000" ACPI device.[1]

For Denverton there are two BARs and one interrupt.

-Steve

[1] 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/pinctrl/intel/pinctrl-denverton.c?h=v5.5-rc7#n266
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