Re: Wrong piix4_smbus address / slow trackpoint on Thinkpad P14s gen 2 (AMD)

Hi again,

Address detection does not work because cd6h/cd7h port io can be
disabled, but it's accessible using mmio. This patch:
https://lore.kernel.org/all/20210715221828.244536-1-Terry.Bowman@amd.com/ (local)
with modified AMD_PCI_SMBUS_REVISION_MMIO fixed base address
detection.

Okay, this patch is stalled because Terry is waiting for review
comments. I'll mention the high priority.

Problem with RMI4 touchpad / trackpoint remains, because rmi4-smbus
needs host notify feature. I have tried implement this feature,
without success. Interrupts on IRQ 7 (SMBus) are generated only for
block data transfers, but not for trackpoint / touchpad move actions.
I have looked at pinctrl_amd and it looks, that activity is signaled
using GPIO. This looks promising:

Isn't the interrupt described in the ACPI tables?

All the best,

   Wolfram