Intel Fields Peak NFC controller (INT339A)
An Intel near-field communication chip that appeared in a narrow set of mid-2010s Intel client devices, such as Cherry Trail-era tablets and laptops, where it was wired up over I2C and discovered by firmware as ACPI device INT339A. It handled short-range contactless features like tap-to-pay or tag reading on those machines.
recommendation
Worth keeping but documenting as legacy because the hardware was tied to a specific 2015-era Intel platform generation and is not shipped in new systems, yet a small number of those laptops and tablets are still in service. Maintenance traffic as recent as 2023 (a Canonical firmware-loading fix) shows the driver is not abandoned, and there is no removal thread in flight, so flagging it as low-use rather than deprecating it is the safer call.
repository signals
sources
- lore.kernel.org
Upstream still took functional maintenance in 2023 for this driver ('nfc: fdp: Add MODULE_FIRMWARE macros'), so it is not abandoned enough for immediate removal.
- cateee.net
LKDDb identifies this as the Intel FDP driver and maps it to ACPI ID INT339A across current kernel series.
- cateee.net
LKDDb shows the transport-specific module fdp_i2c for the same INT339A hardware, indicating a narrow ACPI-enumerated laptop/tablet deployment pattern rather than broad modern designs.
- gitlab.eclipse.org
The original 2015 merge text describes Intel Fields Peak as an ACPI-enumerated NFC solution (INT339A), pointing to a specific mid-2010s platform generation.
- treexy.com
Third-party Windows driver catalog ties ACPI\INT339A to Intel Near Field Communication Device drivers dated 2015, consistent with legacy Cherry Trail-era client hardware rather than new 2025 products.
codex reasoning notes (technical)
Identity came from local source inspection via shell (`Kconfig`, `i2c.c`) showing Intel Fields Peak / ACPI INT339A. Upstream activity came from `lore_file_timeline` on `drivers/nfc/fdp/fdp.c`, which showed bug-fix/stable traffic through 2023 and no removal thread surfaced in the timeline. LKDDb pages were obtained via web search and confirm current kernel support plus the narrow INT339A ACPI binding. The 2015 merge page was obtained via web search and anchors the hardware to a 2015-era Intel client platform. The Treexy page was obtained via web search and is weaker evidence, but its 2015 INT339A Windows driver date supports the inference that new-system sales ended long ago. Overall: legacy client NFC hardware with low present deployments, still worth keeping but annotate as legacy/low-use rather than deprecating for removal.