Hi,
Thank you for your answer. I have downloaded the Zippy2 schematic and see there is an EEPROM for board identification. Which makes me think u-boot and/or kernel checks for expansion boards then enables MMC2 if it finds this EEPROM.
However, my expansion board is custom and does not have this EEPROM. My questions now are:
- Is there a way to bypass this check and enable MMC2 by default?
- Is there a way to enable MMC3 by default as well?
If that is not possible, I can modify my board to add an EEPROM. Where in u-boot/kernel can I find the expansion board check to modify it?
Thanks,
Ashraf