i am actually using a eMMC powered 3.3V as normal MMC 8 bit mode.
I have seen imx6q supports eMMC DDR mode. So i enabled (set resitors approriate),
but have no more working boot (u-boot and Linux not executed, empty tty output).
Is it enough to set the jumper on board for DDR (changed EIM_DA15 to 1),
or there is something else to setup ?