for our own hardware we use a pulldown on RSI_data3 line as mentioned in HWR-manual on page 24-9
"In order to use the RSI_D3 signal for card detection, an external pull down resistor should be added to the pin to pull the pin low during the time a card is not inserted."
But now I'm not able to boot from RSI master !!!
so it seems that boot rom don't disable the int.pullup????
if I remove my 10k pulldown it works as expected .