IMX93 with lt9611 chip bitbake error: Reference to non-existent node or label

[AlanWen]

We use lt9611 to convert MIPI DSI to HDMI but I got a build error while bitbake.

As I following the reference from https://community.nxp.com/t5/i-MX-Processors/IMx93-uses-lt9611-chip-to-convert-MIPI-into-DSI-without... , I got a bitbake error as below:

ERROR (phandle_references): /soc@0/dsi@4ae10000/ports/port@1/endpoint: Reference to non-existent node or label "lt9611_b

And I already configured DRM_LONTIUM_LT9611=y in defconfig.

Here is the definitions in the device tree (imx93-11x11-evk.dts).

&lpi2c1 {
	#address-cells = <1>;
	#size-cells = <0>;
	clock-frequency = <400000>;
	pinctrl-names = "default", "sleep";
	pinctrl-0 = <&pinctrl_lpi2c1>;
	pinctrl-1 = <&pinctrl_lpi2c1>;
	status = "okay";

	lt9611: hdmi@3b {
		compatible = "lontium,lt9611";
		reg = <0x3b>;
		status = "okay";
		
		ports {
			#address-cells = <1>;
			#size-cells = <0>;

			port@1 {
				reg = <1>;
				lt9611_b: endpoint {
					remote-endpoint = <&dsi1_out>;
				};
			};
		};
	};
};

&dsi {
	status = "okay";
	ports {
		port@1 {
			reg = <1>;
			dsi1_out: endpoint {
				remote-endpoint = <&lt9611_b>;
			};
		};
	};
};

I hope everyone can give me some suggestions. Thanks.

[Zhiming_Liu]

Hi @AlanWen 

You can try to remove this property.

[AlanWen]

But it turns out into an

Error(duplicate_label): /soc@0/dsi@4ae10000/port@1/endpoint: Duplicate label 'dsi1_out' on /soc@0/dsi@4ae10000/port@1/endpoint and /soc@0/dsi@4ae10000/ports/port@1/endpoint

I had solved the problem by putting the lt9611: hdmi@3b device tree from lpi2c1 to lpi2c3

But the device could not work on the board, maybe there is still something wrong.

Now it can only build without error message.

[Zhiming_Liu]

Hi @AlanWen 

You can add more debug messages in the 9611 driver or use the i2ctool to check it's registers.