Intel INT3472 ACPI camera power-control glue for MIPI laptop webcams
ACPI-described power and GPIO sequencing logic that brings up the front-facing MIPI CSI-2 webcams found in modern Intel laptops, from Skylake onward through current Meteor Lake, Lunar Lake, and Nova Lake machines. It handles the regulators, clocks, and reset lines (including TPS68470 PMICs, uP6641Q chips, and discrete designs) that sit between the SoC's IPU and the actual camera sensor.
recommendation
It should stay because Intel-based laptops still ship in 2025 and 2026 depend on it to power on their built-in cameras, with no generic replacement for this ACPI glue role. Upstream activity is healthy: board data for Nova Lake was being added in April 2026, real bug fixes landed for ThinkPad X9 Lunar Lake hardware in late 2025, and Dell rugged tablets and Meteor Lake premium laptops have all needed support added recently.
repository signals
sources
- git.kernel.org
Kconfig describes INT3472 as the camera power-controller support for Intel Skylake systems, covering TPS68470, uP6641Q, and discrete GPIO/power-gate designs.
- lkml.org
April 2026 review thread discusses adding INT3472 TPS68470 board data for Intel Nova Lake client platforms, showing current upstream enablement work rather than retirement.
- lkml.org
October 2025 fix thread addresses an INT3472 unregister bug seen on ThinkPad X9 Lunar Lake hardware, indicating real-world use on modern laptops and active bug-fix traffic.
- spinics.net
May 2025 patch adds INT3472 board data for the Dell 7212 Rugged Extreme Tablet, showing ongoing addition of supported systems.
- mail-archive.com
January 2026 Ubuntu OEM bug report for Dell 16 Premium DA16250 on Meteor Lake explicitly shows the int3472-discrete driver gating webcam bring-up on recent shipping hardware.
codex reasoning notes (technical)
Real driver directory, not a helper-only subtree. Local shell inspection (`sed` on Kconfig, `git -c safe.directory=... log`) shows the driver was added in 2021 and still received substantive fixes/features through 2026-02-23, with recent changes for DOVDD, HPD, regulator timing, and board quirks. Lore MCP and `lei` were unavailable here, so lore-style evidence was obtained via web search to LKML/spinics pages; I found active maintenance and new-platform enablement, but no removal series. The kernel.org Kconfig URL is canonical recall, cross-checked against the local tree. Because INT3472 is still needed for current Intel laptop camera designs and has no generic successor covering the same ACPI glue role, the correct outcome is keep.