We have a custom board design where SPI-NOR flash is used for bootrom and eMMC v4.41 is used for application storage (QNX operating system and data). Unfortunatelly eMMC v4.41 is obsolete and we are going to replace it with eMMC v5.0 or v5.1.
I have read everything regarding i.mx6 and eMMC including EMMC 5.0 and EMMC 5.1 work on i.MX6 . Could you help me clear these questions? I am quite confused.
Hello Mehmet Ertug Afsin,
1) Yes, if you would be booting from another source you wouldn’t require making the changes listed on the document for booting.
2,3) I would recommend checking with QNX. The eMMC should be accessible in backward compatibility mode so the eMMC 5.0 would work as an eMMC 4.41, but they would need to confirm if changes are required to the eMMC driver that they are using.
4) You may leave the Data Strobe floating as it wouldn’t be used when working in backward compatibility mode. (It is only used on the HS400 mode, introduced in the eMMC 5.0 standard)
I hope this helps!