[PATCH v1 2/2] imx8ulp_evk: Switch to use devicetree imported from Linux kernel release

Fabio Estevam festevam at gmail.com
Mon Dec 1 13:27:19 CET 2025


Hi Alice,

On Mon, Dec 1, 2025 at 8:01 AM <alice.guo at oss.nxp.com> wrote:
>
> From: Alice Guo <alice.guo at nxp.com>
>
> Enable OF_UPSTREAM for i.MX8ULP EVK so that devicetree imported from
> Linux kernel release can be used.
>
> If mailbox at 29220000 is enabled, gd->arch.ele_dev will be set to this
> device for communication with ELE firmware. This is incorrect because
> mu at 27020000 is the MU used for communication with the ELE firmware. To
> prevent misconfiguration, disable mailbox at 29220000.
>
> The driver model for watchdog timer is not enabled yet, so disable wdog3
> temporarily.
>
> Signed-off-by: Alice Guo <alice.guo at nxp.com>

Now that OF_UPSTREAM is used, the following local U-Boot dts files are
no longer used:

arch/arm/dts/imx8ulp.dtsi
arch/arm/dts/imx8ulp-evk.dts

Please remove them.


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