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EMMC5.1 init failed #73

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zhong-vven opened this issue Mar 26, 2019 · 2 comments
Open

EMMC5.1 init failed #73

zhong-vven opened this issue Mar 26, 2019 · 2 comments

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@zhong-vven
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Hello,
Due to material updates, our boards are mixed with two versions of eMMC, version 5.0 and version 5.1 . In ver 5.0 , every thing is normal , But in ver 5.1, eMMC init failed with error ERR_NO_RESPONSE.
Please help me to fix this case. Soc is SAMA5D27D5M.

image

Thanks!!
@BA8819
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BA8819 commented Apr 10, 2019

Did you make sure that your mmc card is compatible with 5.0 and ealier versions? the driver doesn't support >V4.0, it will try to find if the card can run at version 4 speeds/modes.

@nirvann
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nirvann commented Jun 26, 2019

I don't see any obvious reason why a v5.1 e.MMC wouldn't be backward-compatible.
Have you sought support from the e.MMC Manufacturer?

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@nirvann @zhong-vven @BA8819