Re: [PATCH] arm64: dts: imx8mp-debix-model-a: Correct PAD settings for pmicirqgrp

Laurent Pinchart
2026-03-24T09:39:00Z

Hi Peng,

Thank you for the patch.

On Tue, Mar 24, 2026 at 11:16:13AM +0800, Peng Fan (OSS) wrote:
> From: Peng Fan <peng.fan@nxp.com>
>
> With commit 5d0efaf47ee90 ("regulator: pca9450: Correct interrupt type"),
> 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.
>
> Fixes: c86d350aae68e ("arm64: dts: Add device tree for the Debix Model A Board")
> Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Closes: https://lore.kernel.org/all/20260323105858.GA2185714@killaraus.ideasonboard.com/
> Signed-off-by: Peng Fan <peng.fan@nxp.com>

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

Frank, would you be able to handle this as a v7.0 regression fix ?

I think the same is needed for imx8mp-debix-som-a.dtsi, but I can't
confirm it as I don't have the schematics for the SoM, neither do I have
access to the board.

Dan, Kieran, Stefan, could one of you check if you get an interrupt
storm from the PMIC on v7.0 ?

> ---
> arch/arm64/boot/dts/freescale/imx8mp-debix-model-a.dts | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-debix-model-a.dts b/arch/arm64/boot/dts/freescale/imx8mp-debix-model-a.dts
> index 9422beee30b29c5a551b08476c80fbff96af3439..df7489587e48ed0c678f11291f6f2b77082ade95 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp-debix-model-a.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-debix-model-a.dts
> @@ -440,7 +440,7 @@ MX8MP_IOMUXC_SAI5_RXC__I2C6_SDA 0x400001c3
>
> pinctrl_pmic: pmicirqgrp {
> fsl,pins = <
> - MX8MP_IOMUXC_GPIO1_IO03__GPIO1_IO03 0x41
> + MX8MP_IOMUXC_GPIO1_IO03__GPIO1_IO03 0x000001c0
> >;
> };
>
>
> ---
> base-commit: 09c0f7f1bcdbc3c37a5a760cbec76bf18f278406
> change-id: 20260324-imx8mp-dts-fix-512530fe4dcd

--
Regards,

Laurent Pinchart