Thanks @jock @Aapo Tahkola, those pins are really UART 😁
I tried at first, but I didn't realize it was a broken adapter. I bought a new TTL adapter and it works.
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armbian dailybuild burnd into emmc works well, this is good enough for me.
sdcard boot failed with
RKPARM: Invalid parameter part table
Could not find "misc" partition
avb_ab_flow.c:99: ERROR: Error reading A/B metadata.
avb_ab_flow.c:178: ERROR: I/O error while loading A/B metadata.
Can not load metadata
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for anyone who also meet this board
android_log.txt
jammy_current_cli_202235_emmc_boot_ok.txt
jammy_current_cli_202235_sdcard_boot_failed.txt
