CORE-3568J核心板启动报错
参考底板自己设计的底板，插上CORE-3568J核心版（V2.1），启动报错，无法识别mmc，是什么原因？U-Boot SPL board init
U-Boot SPL 2017.09 (Feb 02 2023 - 10:07:35)
unknown raw ID phN
unrecognized JEDEC id bytes: 00, 00, 00
Trying to boot from MMC2
Card did not respond to voltage select!
mmc_init: -95, time 9
spl: mmc init failed with error: -95
Trying to boot from MMC1
sdhci_send_command: Timeout for status update!
mmc_init: -110, time 1059
spl: mmc init failed with error: -110
SPL: failed to boot from all boot devices
### ERROR ### Please RESET the board ###
# Reset the board to bootrom #
识别不到启动设备，更偏向于硬件问题
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