HDMI Input on radxa rock 5b

[ljones0]

Hello all!

 

I have a radxa rock 5b (8GB, not the plus version) and am running armbian (bookworm) on it. The kernel version (uname -r) reports as 6.12.32-current-rockchip64. By and large almost everything seems to be working - video playback in VLC is fine, 3d acceleration is working (I get around 58-60fps in the game 'torcs' as an example). The only thing I can't seem to get working (and can't find much about it) is the hdmi input.

 

I see some five devices listed in dev (from /dev/video0 to /dev/video4) although none of these seem to relate to the hdmi input.

 

Does the hdmi input work on the 5b under armbian at all?

 

thanks

 

ljones

[Werner]

Use `vendor` kernel and enable hdmirx overlay.

[ljones0]

Ok thanks there. Mind you their kernel is the older 5.x branch, so I'm kinda in two minds about that.

 

ljones

[Werner]

vendor branch is based on latest rockchip bsp which is 6.1.115 atm. You can use armbian-config to switch.

[cyriac]

I ran into the same problem when setting up a retroarch based gaming system with Armbian Debian Trixie. I wanted to use my Dualsense 4 controller with it but couldn't get it to work on Vendor or Current. I later realized that you need to enable `LEDS_CLASS_MULTICOLOR` and `HID_PLAYSTATION` for it to work with the controller. This was only present from the kernel 6.2 and involved compiling the kernel after enabling those flags. I got that working in current and edge but I lost HDMI-CEC. The edge kernel at the time is 6.18.0 for rock 5b. Is there any way forward to get both functionalities working? I see that HDMI-CEC is listed as `n/a` under rock 5b here: https://gitlab.collabora.com/hardware-enablement/rockchip-3588/notes-for-rockchip-3588/-/blob/main/mainline-status.md. 

[Werner]

If you have patience, CEC may work at some point with mainline kernel. There is not fast solution.