eMMC 4.5 support with i.MX28

[bennychen]

Hello,

Because eMMC 24nm ver 4.41 EOL.

So our customer wants to move from eMMC 4.41 to eMMC 4.5.

As I know, usually, spec update of iMMC means additional support of new function so compatible to lower version of controller.

So I want to sure eMMC 4.5 can be attached and used as booting device for i.MX28

Is there any customer who have tried eMMC 4.5 and who have verified its operation in their board? Below is part info of new eMMC.
Could you comment it?

	old part number	-->	New part number
SANDISK P/N	SANDISK SDIN5D2-4G		SANDISK SDIN7DP2-4G
Technology	24nm		19nm
eMMC ver.	4.4.1		4.5

Best Regards,

Benny Chen

[jimmychan]

According to the i.MX28 reference manual, only support to eMMC 4.4.

You may meet this error when using eMMC 4.5.

     mmc0: unrecognised EXT_CSD structure version 6

     mmc0: error -22 whilst initialising MMC card

But you can try this:

How can new eMMC chips version 4.5 be used with i.mx53?