is it possible to send own SPI commands on MMC connector and also get the responses back ? Perhaps even from user mode programms ? Or must i / can i remove the kernel module / kernel part, to access the port registers of the xscale ? I think writing to the registers like pxaregs would block me from accessing if someone else already have access to it ?
Can someone give me a bit more details, how MMC stuff is working on gumstix ?