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cannot access eMMC in iMX6ul-EVK

Question asked by Sourabh Das on Aug 9, 2016
Latest reply on Aug 10, 2016 by Sourabh Das

Hi, I am using imx6ulevk. I want to boot my images from eMMC present in the kit. I followed the "i.MX_Linux_User's_Guide.pdf". So currently I have booted my board with the SD card upto the u-boot prompt. As mentioned in the guide the USDHC2 is the interface for the eMMC and I used the following command to select the eMMC:

=> mmc dev 1 0

It give me the result:
switch to partitions #0, OK
mmc1 is current device

 

Then I tftp the emmc u-boot image to the board. The image was prebuilt image which I downloaded from NXP website:

tftpboot ${loadaddr} u-boot-imx6ul14x14ddr3arm2_emmc.imx

 

Then i did mmc write to write it to mmc:

mmc write ${loadaddr} 0x0 0x60000

which gives the result:

MMC write: dev # 1, block # 0, count 393216 ... 393216 blocks written: OK

 

Then I changed the boot config pin to "0110" to boot the u-boot from eMMC. But I couldn't get any output.

 

Here is the output of my "mmc list" command:

FSL_SDHC: 0
FSL_SDHC: 1 (SD)

 

Have I done any thing wrong in selecting the mmc dev?

 

mmc dev 1 0

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