How to remove node definition, which is referenced by included .dtsi, from the overlay

[yashi]

I'm trying to create a custom board based on Arty A7 in the zephyr tree, which has the following dtsi. Is there any way to disable or removed referenced nodes, itcm and dtcm, from the overlay?

boards/arm/arty/dts/arty_a7_arm_designstart.dtsi

chosen {
		  :
    zephyr,flash = &itcm;
    zephyr,sram = &dtcm;
}

myboard.dts

chosen {
    zephyr,flash = <disable?>
}

soc {
    /* I want to remove the following two node because I don't use it. */
    itcm: memory@.... {
     :
    }
    dtcm: memory@... {
      :
    }

Because arty_a7_arm_designstart.dtsi assumes both itcm and dtcm is provided by the overaly by using chosen, I'm assuming you can't remove them from the overlay. Or, is there any way to remove the reference to itcm and dtcm from the overaly? Like an empty phandle?

I can use status = "disabled" in both node but my question isn't that. I'd like to remove the definition of them from the overlay.

My only idea is to move chosen from arty_a7_arm_designstart.dtsi to including .dts. But I'm sure there is a reason why they are there.

EDIT:
It seems like <> works.

chosen {
    zephyr,flash = <>
}

[henrikbrixandersen]

You can use /delete-property/ for deleting devicetree properties and /delete-node/ for deleting devicetree nodes from an overlay: https://docs.zephyrproject.org/latest/guides/dts/howtos.html#use-devicetree-overlays

[hjhhskm]

/delete-node/ can't use in overlay

[henrikbrixandersen]

/delete-node/ can't use in overlay

Why not?

[cdwilson]

/delete-node/ can't use in overlay

For anybody coming across this in the future, I initially tried to delete a node using something like this in my overlay (which did not work):

&spi3 {
    cs-gpios = <&feather_header 15 GPIO_ACTIVE_LOW>;

    /delete-node/ w25q32jv;

However, this does work:

/delete-node/ &w25q32jv;

&spi3 {
	cs-gpios = <&feather_header 15 GPIO_ACTIVE_LOW>;

[cdwilson]

See #67228 (reply in thread) for some additional examples.