Thanks @agherzan for the comment. Sure, but let's leave it for @lucafavaretto. He has already included it also in this test plan (the test coverage). He will check and decide what exactly should be tested based on the current status (same for meta-zephyr#39 (closed))
As I said, these peripherals were tested during development. The test and validation team will pick it up when validating the main Epic for Raspberry Pi support. Hence, closing this issue.