Dears,
we found that imx6ul can only boot from emmc with 1 bit mode, (Boot_cfg2[7~5]=000), neither 4bit nor 8bit would failed.
it seems many guys met this issue before, but never found a solution yet, please kindly help to advise that.
such as:
https://community.nxp.com/message/908613?commentID=908613#comment-908613
thank a lot.
Hello,
You may create request / ticket to get some patches, that may help.
eMMC Fuses And Card did not respond to voltage select! I.MX6UL
Regards,
Yuri.
thank you very much.
Hi Allon
general debug steps are provided on that link: attach the board with any JTAG debugger,
such as RV-ICE or Lauterbach and dump 0x907400, you should see your IVT header
here if the eMMC access is ok. Also recommended to check signals with oscilloscope
and for problematic pins (big ringing, overshooting) change "PAD_SETTINGS" described
in Table 8-15. USDHC BooteFUSE Descriptions i.MX6UL Reference Manual (rev.1 4/2016)
http://www.nxp.com/docs/en/reference-manual/IMX6ULRM.pdf
Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------