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The dtb of UART from 26-pin I/O


yulin

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Not sure if the rolling release includes the UART dtb yet, but when I build my own image (jammy xfce kernel 5.10.110) I don't have the UART dtbs in /boot/dtb/rockchip/overlay/ . As a result, I couldn't add uart0-m2 to /boot/armbianEnv.txt and get /dev/ttyS0 when I was following the official user manual to enable UART.

After some researching I managed to solve this by copying the dtb file from orange pi's official ubuntu image to /boot/overlay-user and enable UART with user_overlays=rk3588-uart0-m2 in armbianEnv.txt . Rebooted and it works.

However, I suppose it would be better to include the dts files in kernel patches? I'm posting this because I don't know what's the best practice for this.

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