Linux/DRA626: DRA628PC7IZKKQ1: if the interface of MMC2 can support eMMC MTFC4GACAANA start

Joseph zheng

Prodigy 30 points

Part Number: DRA626

Tool/software: Linux

TI 's experts, I used DRA628PC7IZKKQ1

i just want to know if the interface of MMC2 can support eMMC MTFC4GACAANA start

thanks very much

over 8 years ago

0 Yordan Kamenov over 8 years ago

TI__Mastermind 42515 points

Hi Joseph,

I have forwarded your question to a MMC expert for comment.

Regards,
Yordan

0 Shiou Mei Huang over 8 years ago in reply to Yordan Kamenov

TI__Genius 10180 points

Joseph,

I checked into the JEDEC specs and identified eMMC v4.5 is compatible with the DRA62x boot up operation (3.0V SDR backward compatible timing) . Noted that DRA62x is spec'd with earlier eMMC devices, so please review TRM Chapter 4.7.4 ROM Code Memory and Peripheral Booting -- MMC/SD Cards, for the proper register settings and file system the eMMC device should have for ROM to access successfully.

Thanks & Regards,

Shiou Mei

0 Joseph zheng over 8 years ago in reply to Shiou Mei Huang

Prodigy 30 points

dear shiou mei

thank you very much。

so you mean that DRA628 can support eMMC v4.51 boot up ？

0 Pavel Botev over 8 years ago in reply to Joseph zheng

TI__Guru**** 170625 points

Hi Joseph,

Yes, I think DRA62x device can boot from eMMC v4.51. These versions should be backward compatible. You should identify the additional features that come with v4.51 (compared with v4.3) and keep in mind that you can not use these.

Note also that DRA62x MMC linux driver is based on v4.0

processors.wiki.ti.com/.../TI811X_PSP_04.07.00.02_Feature_Performance_Guide

See also the below e2e threads:

e2e.ti.com/.../434147
e2e.ti.com/.../429461

e2e.ti.com/.../341570
e2e.ti.com/.../230879

Regards,
Pavel

Processors

Processors forum

Linux/DRA626: DRA628PC7IZKKQ1: if the interface of MMC2 can support eMMC MTFC4GACAANA start