Not sure if it's still helpful but ...
Diederik de Haas <didi.deb...@cknow.org> writes: [...] > A crucial element looks to be to enable 2 settings in the device tree > (https://salsa.debian.org/kernel-team/linux/-/merge_requests/351#note_238470) > # fdtput -t s /boot/dtbs/rockchip/rk3328-rock64.dtb /hdmi-sound status okay > # fdtput -t s /boot/dtbs/rockchip/rk3328-rock64.dtb /i2s@ff000000 status okay > (Old value is "disabled") The board is already using device tree from upstream kernels so I didn't have to mess with them to enable the devices. I checked the nodes with fdtget and they showed status "okay" for both the nodes. > I can/will test to see what else is needed to get it to work on my Rock64. > But those settings are actually in rk3328.dtsi. And there is a similar file > rk3399.dtsi where it seems the same (simple) change is needed. > And that would mean that HDMI audio would work on all (?) rk3328 and rk3399 > devices. > > But for that to happen, I need someone with a RockPro64 device who is willing > to join in and validate that the changes do indeed also work on a RockPro64. > > Who can and is willing to help? On my RockPro64 and see the following output - rockpro64:~$ uname -a Linux rockpro64 5.10.0-6-arm64 #1 SMP Debian 5.10.28-1 (2021-04-09) aarch64 GNU/Linux rockpro64:~$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: hdmisound [hdmi-sound], device 0: ff8a0000.i2s-i2s-hifi i2s-hifi-0 [ff8a0000.i2s-i2s-hifi i2s-hifi-0] Subdevices: 1/1 Subdevice #0: subdevice #0 rockpro64:~$ grep SND_AUDIO /boot/config-5.10.0-6-arm64 # CONFIG_SND_AUDIO_GRAPH_CARD is not set It seems the config doesn't need enabling for sound on this device at least. Hope this helps. Punit
