MCX MicrocontrollersのトピックRe: MCXN947 HPDAC (14-bit) driver support in Zephyr

MCXN947 HPDAC (14-bit) driver support in Zephyr

wesOS — Thu, 19 Feb 2026 16:26:38 GMT

I am using Zephyr on an MCXN947 and I need to use the on-chip 14-bit HPDAC (clocked as DAC2, i.e., kCLOCK_Dac2 in the MCUXpresso HAL). I cannot find a Zephyr devicetree binding and driver that targets the HPDAC peripheral on this SoC. Is the MCXN947 HPDAC currently supported upstream in Zephyr, and if not, what are the recommended options? If there is an existing patch/branch or tracking issue for HPDAC support, could you point me to it.

Re: MCXN947 HPDAC (14-bit) driver support in Zephyr

Harry_Zhang — Tue, 24 Feb 2026 09:55:10 GMT

Hi @wesOS

The MCXN947 HPDAC (DAC2) is not currently supported in upstream Zephyr. The FRDM‑MCXN947 board only includes support for the LPDAC (nxp,lpdac), and there is no devicetree binding or driver for HPDAC in Zephyr.

dac0: dac@10f000 { compatible = "nxp,lpdac"; reg = <0x10f000 0x1000>; interrupts = <106 0>; status = "disabled"; voltage-reference = <0>; #io-channel-cells = <1>; };

FRDM-MCXN947 — Zephyr Project Documentation

If you need HPDAC functionality now, the recommended approach is to use the MCUXpresso SDK HPDAC driver directly inside your Zephyr application, when a peripheral has no Zephyr driver.

Harry