I tried to spot JT5/JT6 on the front/back view of the 7015 SOM, because I think that it would be very benefitial to be able to switch between the eMMC and the MIO pins on JX2 via software.
One candidate for such a purpose would be the otherwise unused PS_MIO8, connected to R85 which I think I found on the bottom side right beside the FPGA breakout.
I wasn't able to locate U18 and U19 either on the images, so any hint where to look for those would be appreciated.
Thanks in advance,
Herbert