Hi everyone, 

 

I just received an "orange pi 5 plus" and I wanted to use the hdmi-input feature in it. 

I installed armbian and added the hdmirx overlay, and now I can use ffmpeg or gstreamer to stream video input. Good.

 

Alas, I see no alsa hdmi input card. I tried to search for some settings but didn't find any...

 

The only information I found on this feature are here https://github.com/armbian/linux-rockchip/blob/rk-6.1-rkr3/arch/arm64/boot/dts/rockchip/rk3588-orangepi-5-plus.dts 

do you have any pointer to give me on how to enable this feature? 

(I know how to compile stuff, using Linux since 1998  ) 

 

thanks for any help / pointer you can give me ❤️

 

BS.

@Benjamin Sonntag Have you tried to enter sudo alsa force-reload after connecting the source?

Sadly "alsa" does not exist as a command on Debian 😕 (I took the bookworm armbian initially)

• I just tested with the "Armbian 24.8.1 Noble Gnome" image, (kernel 6.1.75) but it has no support for hdmi input / hdmirx at all ...   
• I then tested with the "Ubuntu 24.04 (Noble) / Gnome" image using kernel 6.10, dated August 2024

and I found that "alsa" command in the alsa-base package, present in Ubuntu but deleted long ago on Debian. This command basically tries to unload alsa module and reload them

no change on my orange pi 5 plus when I did that, (I confirmed that the HDMI input had a signal before reloading, via dmesg saying "fdee0000.hdmi_receiver: hdmirx_wait_lock_and_get_timing: signal lock ok, i:2
")

 

root@orangepi5-plus:~# alsa force-reload
Unloading ALSA sound driver modules: snd-soc-rockchip-i2s snd-soc-simple-card snd-soc-rockchip-i2s-tdm snd-soc-es8328-i2c snd-soc-simple-card-utils snd-soc-es8328 snd-soc-simple-amplifier snd-soc-core snd-compress snd-pcm-dmaengine snd-pcm snd-timer (failed: modules still loaded: snd-soc-simple-card snd-soc-rockchip-i2s-tdm snd-soc-es8328-i2c snd-soc-simple-card-utils snd-soc-es8328 snd-soc-simple-amplifier snd-soc-core snd-compress snd-pcm-dmaengine snd-pcm snd-timer).
Loading ALSA sound driver modules: snd-soc-rockchip-i2s snd-soc-simple-card snd-soc-rockchip-i2s-tdm snd-soc-es8328-i2c snd-soc-simple-card-utils snd-soc-es8328 snd-soc-simple-amplifier snd-soc-core snd-compress snd-pcm-dmaengine snd-pcm snd-timer.

 

sadly no hdmi audio input ...

 

root@orangepi5-plus:~# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Analog [Analog], device 0: fe470000.i2s-es8328-hifi-analog es8328-hifi-analog-0 [fe470000.i2s-es8328-hifi-analog es8328-hifi-analog-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

 

 

2 hours ago, Benjamin Sonntag said:

(kernel 6.1.75) but it has no support for hdmi input / hdmirx at all .

needs to be enabled via overlay

@Benjamin Sonntag I think you want to ask aplay to list recording devices rather than playback devices - I have a different rk3588 device and it shows:
 

acas@t6:~$ aplay -C -l
**** List of CAPTURE Hardware Devices ****
card 0: rockchiphdmiin [rockchip-hdmiin], device 0: rockchip-hdmiin i2s-hifi-0 [rockchip-hdmiin i2s-hifi-0]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 1: realtekrt5616co [realtek,rt5616-codec], device 0: fe470000.i2s-rt5616-aif1 rt5616-aif1-0 [fe470000.i2s-rt5616-aif1 rt5616-aif1-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

 that is with the overlay enabled as described 

Thanks @ozacas ! I was wrong inded!

 

root@orangepi5-plus:~# aplay -C -l 
**** List of CAPTURE Hardware Devices ****
card 0: Analog [Analog], device 0: fe470000.i2s-es8328-hifi-analog es8328-hifi-analog-0 [fe470000.i2s-es8328-hifi-analog es8328-hifi-analog-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

 

I guess that's an answer  

 

Also as a reply to @Werner : I will retry the kernel 6.1.75 vendor armbian image but when I tested it armbian-config didn't propose any overlay apart from a GPU thingy. no hdmirx uart or others.

I think there is an issue with the naming of the overlays. If you check /boot/dtb/overlay or whatever that folder was, you should see lots of overlays. Enabling can be done manually by editing /boot/armbianEnv.txt

If you need an example simply enable the gpu overlay and check the file again to see how that works.

maybe try something like:
 

acas@t6:/boot$ find /boot/dtb* -name \*hdmirx\*
/boot/dtb-6.1.75-vendor-rk35xx/rockchip/overlay/rk3588-hdmirx.dtbo

to try to find the overlay name. And verify its presence on the system.

Edited October 16, 20241 yr by ozacas
tweak