AnsweredAssumed Answered

SD-Card not recognized

Question asked by mahi on Oct 27, 2015
Latest reply on Oct 28, 2015 by igorpadykov

Hi Community,

 

currently I am trying to bring up my custom i.MX6 DL board. DDR3 calibration worked fine and the stress test did not show any errors in several hours.

 

Afterwards I modified BOOTMODE and BOOTCFG settings to boot from SD-Card (uSDHC2), put in an SD-Card with a yocto-image on it and powered up. The processor accesses the SD-Card (I can see the lines toggle on the oscilloscope) but then falls back to "serial downloader boot mode".

Can someone give me a hint if there is way to investigate this issue other than "watching" the lines with a logic analyser...?

Does i.MX6 output something on any UART during its boot sequence?

Quite unlikely, but is it perhaps possible to debug this initial boot sequence (I have a J-Link available)?

 

 

Best Regards,

Martin

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