Device Tree override options not working on Armbian

[Michał Fita]

I have a `.dts` file built on Raspberry Pi OS for Raspberry Pi 5, that has following section allowing to provide options to both userspace `dtoverlay` and as parameters in `/boot/firmware/config.txt`:

	__overrides__ {
		rotation = <&cam_node>,"rotation:0";
		orientation = <&cam_node>,"orientation:0";
		media-controller = <&csi>,"brcm,media-controller?";
		cam0 = <&i2c_frag>, "target:0=",<&i2c_csi_dsi0>,
		       <&csi_frag>, "target:0=",<&csi0>,
		       <&cam_node>, "VIN-supply:0=",<&cam0_reg>;
	};

Then following use:
 

sudo dtoverlay -v ovaone cam0=on

Overrides proper fields in the overlay fragments on Raspberry Pi OS, but despite overrides being recognized they don't seem to apply and camera driver is starting with wrong I²C attached.

 

The same problem with with `dtparam` in `config.txt` as it works on Raspberry Pi OS, but not on Armbian (I actually wonder how other `dtparam`s work on Armbian).

 

I have to patch the `.dts` file prior to compilation with I²C references replaced for `fragment@100` and `fragment@101`. Our `.dts` is just a little stripped version of original for imx219 camera.

 

Suggestions or explanations welcome.

[SteeMan]

Moved post to Raspberry Pi sub forum and added the Rpi5 tag.

[Michał Fita]

Correction: I figured why it doesn't work at boot.

The question remains open for `dtoverlay` userspace. This tool is not versioned, hard to compare what version Armbian is using in comparison with recent Raspberry Pi OS.