[U-Boot] Information request about Generic MMC

[Gérald Kerma]

Hi all developers,

I would like to backport the Marvell SDIO driver to u-boot.

I have complete the 'port' of the Marvell's uboot sources code for a
legacy like driver.

It will be better to make a "new" driver and I look for informations
about the generic MMC driver coding style.

Can anyone tell me the needed features or point me to technical references ?

Many thanks.
-- 
Gérald