AGX ORIN : How to port camera driver, like AGX Xaiver

[JiaZW]

1. I found the ORin platform DTS structure a little different than agX Xavier

2. Is there a specific method ?

[JiaZW]

Does the Orin platform still need to block this “Does the Orin platform still need to block this”?

[ShaneCCC]

I would suggest reference to imx477 to implement your driver.

[JiaZW]

agx orin r34.1.1

I can’t find the DTS configuration for IMX477 in the following directory

“Linux_for_Tegra/source/hardware/nvidia/platform/t23x”

[JiaZW]

Doesn’t T23X stand for AgX Orin ?

[ShaneCCC]

Yes, should be t234 for Orin.

[JiaZW]

Can I not compile these overlays?

[ShaneCCC]

If you want implement your own device tree that don’t necessary.

[JiaZW]

You mean I can directly add my own Camera DTS in the following DTSI

“Linux_for_Tegra/source/hardware/nvidia/platform/t23x/concord/kernel-dts/cvb/tegra234-p3737-camera-modules.dtsi”

[JiaZW]

Another question is, custom kernels compiled byself need to be signed ???

[ShaneCCC]

Yes, and no need sign.
Have checking the programing guide and kernel building.

https://docs.nvidia.com/jetson/archives/l4t-archived/l4t-3261/index.html#page/Tegra%20Linux%20Driver%20Package%20Development%20Guide/jetson_xavier_camera_soft_archi.html#

https://docs.nvidia.com/jetson/archives/l4t-archived/l4t-3261/index.html#page/Tegra%20Linux%20Driver%20Package%20Development%20Guide/kernel_custom.html#

[JiaZW]

May I ask, my transplanted camera driver and DTS have been loaded normally, why is there no video production

[JiaZW]

[ShaneCCC]

Could be your device tree have problem cause the problem.

[JiaZW]

my orin version : r34.0.1

The kernel version I compiled was based on R34.1.1

Is this feasible???

[hang.zheng]

I have the same problem. the video node cann’t be generated. Did you succeed？

[channinglan]

Me too …

[ShaneCCC]

For Orin need change the vi@xxxxx{} to tegra-capture-vi{} also the nvcsi@ could be different.

/ {
18 	tegra-capture-vi {
19 		num-channels = <1>;
20 		ports {
21 			#address-cells = <1>;
22 			#size-cells = <0>;
23 			port@0 {
24 				reg = <0>;
25 				liimx185_vi_in0: endpoint {
26 					port-index = <0>;
27 					bus-width = <4>;
28 					remote-endpoint = <&liimx185_csi_out0>;
29 				};
30 			};
31 		};
32 	};
33 
34 	host1x@13e00000 {
35 		nvcsi@15a00000 {
36 			num-channels = <1>;
37 			#address-cells = <1>;