eMMC flash memory not found in u-boot

[andoniirizar]

I have a sabresbd board with a imx6q processor. I've manage to create the images with yocto and to deploy those images in an sdcard.

Now I would like to boot from the eMMC flash memory.

In u-boot, mmcinfo reports the following,

U-Boot > mmcinfo
MMC: no card present
Device: FSL_SDHC
Manufacturer ID: 0
OEM: 0
Name: Tran Speed: 0
Rd Block Len: 0
MMC version 0.0
High Capacity: No
Capacity: 0 Bytes

Bus Width: 0-bit  

Regards

Andoni

[Rita_Wang]

Hi Andoni,

What images have you written to the emmc device?
Have a great day
Dan

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[andoniirizar]

The image I've built and deploy in the sdcard is core-image-base.

[igorpadykov]

Hi Andoni

one can use command “mmcinfo <dev>“

and check by oscilloscope signals on eMMC.

Best regards

igor