MCX A346 – LPADC2 / LPADC3 missing in Zephyr device tree (nxp_mcxaxx6_common.dtsi)

methanch4 — Thu, 29 Jan 2026 16:01:24 GMT

Hello everyone,

I am currently working on the development of a device based on the MCX A346 MCU using Zephyr OS version 4.3.99.

While integrating the ADCs, I noticed that the device tree file nxp_mcxaxx6_common.dtsi only defines support for two LPADC instances (lpadc0 and lpadc1). However, the MCX A346 provides four LPADC modules (LPADC0–LPADC3).

At the moment, there does not seem to be any device tree support for lpadc2 and lpadc3.

Has anyone already dealt with this and found a recommended workaround (for example via board overlays or custom DTS extensions), or is there an official plan to add support for the additional LPADCs in Zephyr?

Any hints or experiences would be greatly appreciated.

Best regards
Siegurt Skoda

Re: MCX A346 – LPADC2 / LPADC3 missing in Zephyr device tree (nxp_mcxaxx6_common.dtsi)

Celeste_Liu — Fri, 06 Feb 2026 04:16:53 GMT

Hello @methanch4 ,

Thank you for reaching out to us. Due to an issue with the community system, I only just saw your question. Sorry for the long wait. I have checked and can confirm that the issue exists as you described. I will report this to the relevant team and wait for their follow-up. Once I receive their response, I will update you promptly.

Celeste

topic Re: MCX A346 – LPADC2 / LPADC3 missing in Zephyr device tree (nxp_mcxaxx6_common.dtsi) in MCX Microcontrollers

MCX A346 – LPADC2 / LPADC3 missing in Zephyr device tree (nxp_mcxaxx6_common.dtsi)

Re: MCX A346 – LPADC2 / LPADC3 missing in Zephyr device tree (nxp_mcxaxx6_common.dtsi)