[PATCH v2 00/12] arm64: dts: imx8mp: Correct PAD settings for PMIC_nINT

Peng Fan (OSS)
2026-03-26T07:26:42Z

As reported in [1], there is interrupt storm for i.MX8MP DEBIX Model A.
Per schematic, there is no on board PULL-UP resistors for GPIO1_IO03,
so need to set PAD PUE and PU together to make pull up work properly.

DEBIX Model SOM also has same issue as reported in [2].

I gave a check on current i.MX8MP based boards, most boards have wrong
PAD settings with PMIC_nINT. It is low level triggered interrupt.
many boards only set PU, but PUE not set, so pull up not work properly.

Patch 1 and 2 are to fix issue that confirmed by Laurent and Kieran.

I checked AB2 and NAVQ schematic, so these two boards are also having
same issue.

For other boards, I not able to find any public schematics. For per
the DT settings(interrupt is configured LOW LEVEL trigger), so PMIC_nINT
should be configured as PULL UP, per NXP reference design, there is no
on-board resistors for PMIC_nINT, it counts on SoC internal PULL. So I think
these boards are also having issues. But I use phase "there might be" in
commit log.

The last two patches, I think the PAD settings are wrong, but not sure
they have interrupt storm issues, so just correct the settings.

For imx8mp-skov-reva.dtsi, I am not sure whether it needs same fix, so
not touch it.

[1] https://lore.kernel.org/all/20260323105858.GA2185714@killaraus.ideasonboard.com/
[2] https://lore.kernel.org/all/20260324194353.GB2352505@killaraus.ideasonboard.com/

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
Changes in V2:
- Fix more boards
- Drop preceding zero
- Link to v1: https://lore.kernel.org/all/20260324-imx8mp-dts-fix-v1-1-df0eb2f62543@nxp.com/

---
Peng Fan (12):
arm64: dts: imx8mp-debix-model-a: Correct PAD settings for PMIC_nINT
arm64: dts: imx8mp-debix-som-a: Correct PAD settings for PMIC_nINT
arm64: dts: imx8mp-navqp: Correct PAD settings for PMIC_nINT
arm64: dts: imx8mp-ab2: Correct PAD settings for PMIC_nINT
arm64: dts: imx8mp-icore-mx8mp: Correct PAD settings for PMIC_nINT
arm64: dts: imx8mp-edm-g: Correct PAD settings for PMIC_nINT
arm64: dts: imx8mp-aristainetos3a-som-v1: Correct PAD settings for PMIC_nINT
arm64: dts: imx8mp-nitrogen-som: Correct PAD settings for PMIC_nINT
arm64: dts: imx8mp-sr-som: Correct PAD settings for PMIC_nINT
arm64: dts: imx8mp-ultra-mach-sbc: Correct PAD settings for PMIC_nINT
arm64: dts: imx8mp-dhcom-som: Correct PAD settings for PMIC_nINT
arm64: dts: imx8mp-data-modul-edm-sbc: Correct PAD settings for PMIC_nINT

arch/arm64/boot/dts/freescale/imx8mp-ab2.dts | 2 +-
arch/arm64/boot/dts/freescale/imx8mp-aristainetos3a-som-v1.dtsi | 2 +-
arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc.dts | 2 +-
arch/arm64/boot/dts/freescale/imx8mp-debix-model-a.dts | 2 +-
arch/arm64/boot/dts/freescale/imx8mp-debix-som-a-bmb-08.dts | 2 +-
arch/arm64/boot/dts/freescale/imx8mp-debix-som-a.dtsi | 2 +-
arch/arm64/boot/dts/freescale/imx8mp-dhcom-som.dtsi | 2 +-
arch/arm64/boot/dts/freescale/imx8mp-edm-g.dtsi | 2 +-
arch/arm64/boot/dts/freescale/imx8mp-icore-mx8mp.dtsi | 2 +-
arch/arm64/boot/dts/freescale/imx8mp-navqp.dts | 2 +-
arch/arm64/boot/dts/freescale/imx8mp-nitrogen-som.dtsi | 2 +-
arch/arm64/boot/dts/freescale/imx8mp-sr-som.dtsi | 4 ++--
arch/arm64/boot/dts/freescale/imx8mp-ultra-mach-sbc.dts | 4 ++--
13 files changed, 15 insertions(+), 15 deletions(-)
---
base-commit: 66ba480978ce390e631e870b740a3406e3eb6b01
change-id: 20260326-imx8mp-dts-fix-v2-89ede7320c6a

Best regards,
--
Peng Fan <peng.fan@nxp.com>