Klaus42

Hi le51, sorry for the severely delayed answer. Doing all this is far beyond my knowledge and my time budget. I think, going back to RasPi is the best alternative... However, thank you for your help! Regards

Is anybody out there who can help help me to tackle this challenge? I do not want to go back to Raspberry Pi and Rasbian OS... Regards, Klaus

Hi Igor, thank you for pointing me to that URL. I was able to build the kernel with in ~: call sudo ./compile.sh BUILD_ONLY=kernel BOARD=rock-5b KERNEL-CONFIGURE=yes In kernel configuration: But an asterisk in front of Device Drivers->Sound Card Support-->Advanced Linux Sound Architecture-->ALSA for SoC audio support -->CODEC drivers-->Texas Instruments PCM512x CODECs - I2C (it took ages to find this path...) Save and Exit Wait until the kernel has been compiled in ~/build/output/debs: call sudo dpkg -i linux-image-legacy-rockchip-rk3588_23.02.0-trunk_arm64.deb Hopefully, somebody is able to help me with the I2S overlay stuff... Regards, Klaus

Hello to everybody, I am using rock 5b, PCB Version 1.42 with Armbian 22.11 CLI. I would like to connect IQaudIO DigiAMP+ based on the TAS5756 (https://shop.max2play.com/en/iqaudio-digiamp.html). According to the GPIO pinout of ROCK 5b and the datasheet of DigiAMP+ (page 21), this seams to be feasible from the electrical perspective. But the software perspective overwhelmes me as a linux novice. If I understand it correctly, I need more or less two things: a device tree overlay to activate the appropriate GPIOs with their I2S and I2C functionality and to tell the kernel about the attached device (DTS file or the compiled DTO file) an appropriate driver (kernel module) for the device I have not found any useful examples about how to write device tree overlay files for the rock 5 with I2S support. Does anybody out there have a generic I2S example for rock5b or maybe even a working device tree file for the the DigiAMP+? According to https://dev.seemoo.tu-darmstadt.de/bcm/bcm-rpi3/-/blob/master/kernel/arch/arm/boot/dts/overlays/iqaudio-dacplus-overlay.dts, the TAS5756 is compatible with the PCM5122. But according to the file /boot/config-5.10.110-rockchip-rk3588, line 5168 (content is # "CONFIG_SND_SOC_PCM512x_I2C is not set"), the standard armbian kernel is not compiled with support for this chip. Is this assumption correct? Thank you in advance! Regards, Klaus