Question about iMX28 SPI flash driver

Hello,

I've got an iMX28EVK board, added Winbond 25q64 flash and use the latest u-boot-imx version. For building u-boot I use the m28evk_config and set the the flash to winbond. It boots successfully through SD card and it also probes/recognize the SPI flash. Also the u-boot binary writes successfully through "sf write" to the flash(no error message).

The problem is, when reading the SPI flash through "sf read"; there are only "0".

Does anybody have an idea?

Thanks in advance.

Hi Alexander,

I have added Fabio in CC. He is porting the Freescale's MX28EVK board.

You are using the m28evk configuration for the Freescale's mx28evk - or are you really have a m28evk ? I can suppose you must at least adapt something...

Best regards,
Stefano Babic

=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================

Yes, you can find my initial RFC patch for MX28EVK support in the list archive.

I am working on rebasing it to current top of tree code now.

As Stefano explained be careful with the naming of the boards:

- m28evk from Denx is already in mainline U-boot.

- mx28evk from Freescale is the one I am currently working on.

Regards,

Fabio Estevam