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eMMC not visible in u-boot

Question asked by antonioramos on Mar 21, 2018
Latest reply on Mar 22, 2018 by antonioramos

Please see the listing below.

 

=>  mmc list

FSL_SDHC: 0 (SD)

FSL_SDHC: 1

 

=> ls mmc 1:1

  1000000   random_data1

 

1 file(s), 0 dir(s)

 

=>  mmc list

FSL_SDHC: 0 (SD)

FSL_SDHC: 1 (eMMC)

 

 

Why is it that “mmc list” shows the eMMC after listing the directory but not before? Is this a bug or a feature?

 

I am using a board designed by ourselves based on the iMX6UL EVK. I am using my own image created with Buildroot using the Linux kernel and U-Boot from the 4.9 release by NXP. We have a MicroSD cage from which I am currently booting connected to port 1 and connected to port 2 we have Kingston EMMC04G-M627-Y02U eMMC (eMMC v5.1 compatible with v4.5). Once Linux boots I can (on eMMC) create partitions, format them and copy data, so everything seems fine in Linux so far.

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