[U-Boot-Users] drivers MMCplus for at91sam9x

Hi, I use a MMCplus 4GB on my design (with at91sam9260). It's wired with 4 bits. Currently U-boot (1.1.5) can't detect correctly the MMC and so I can't read my Linux kernel Image on the ext3 part of this MMC. If I use MMC 1GB, it works. Somebody have already use it? Or somebody have already implemented the ext_csd and high capacity with MMC on another platform? I need help. Thanks in advance to help me.

Regards,

Pierre