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  1. Hi s_frit, thank you for you reply. I've used dtc to decompile, edit and recompile the dtb files. Now the i2s1 seems to be enabled; the problem that I've is that the audio card that I've added in dtb is not available... listing the audio device using "aplay -l" , "arecord -l" "cat /proc/asound/cards" and also /proc/asound/pcm" commands not show the new peripheal.. Any suggestion ? How I can install dtbo overlays to edit dtb in more robust way?
  2. Hi s_frit, I've followed the instruction at I've edited the dts file before recompile the kernel.
  3. In the nanopcT3+ board I need to enable the I2S1 (14 pin header) in Desktop version. I need to have the I2S1 peripheal as SLAVE and a MCLK of 48kHz and 192kHz (better if other clock speed are supported). The "aplay -l" and "arecord -l" commands must show the I2S1 as a sound card with input ad output device. I've tried to do the job but I'm a newbbie on linux and embedded linux. Following the official FriendlyArm wiki, on a host PC I've downloaded the kernel source, modified the dtsi file to enable i2s, recompiled the kernel and U-boot and all steps seem work fine. Now I don't know how to do a final steps to have a SD bootable image with eflasher to load and test my distro in the NanoPC T3+ emmc. Anyone can explain step by step (from download the source code up to flash the bootable image (also with emmcflasher inside) to SDcard) how to do to enable this feature in Desktop version of Armbian. Thanks in advance!